Shirtloads of Science

Dr Matt Agnew's extraordinary life so far 403 Nov 03, 2024

Mining Engineer, Reality TV star, Astrophysicist, Author - What's left for Dr Matt?

Observable and Infinite with Prof Lewis (402) Oct 27, 2024

If we need to fully understand space we need more time - lots of it. Beyond the Hubble sphere things gets lumpy.

Deceit starts with D with Prof Mann (401) Oct 20, 2024

Dr Karl asks a fellow physicist for the telltale signs when powerful people spread untruths. They are easy to spot and nasty.

DrKarl

Hot Data with Prof Mann (400) Oct 13, 2024

The graph points skywards. A thousand of years of data says "stop burning carbon". Prof Mann tells Dr Karl of how the USA responded to his articles in the early 1990s.

DrKarl

Is AI telling lies with Dr Jessica Bloom (399) Oct 06, 2024

Dr Karl interviews Dr Bloom in NYC on the ethics of Artificial Intelligence. If AI delivers misinformation, how could we tell?

Dr. Karl

The G's of AI with Dr Jessica Bloom (398) Sep 29, 2024

At the moment there are two G's in AI. Dr Karl gets the 360 tour of both with Dr Jessica Bloom in New York City.

DrKarl

Women who Measured the Stars with Dava Sobel (170) Rpt Sep 22, 2024

Edwin Hubble is world famous. What about Henrietta Swan Leavitt? She found a way to measure and classify the universe. In Dava's book "The Glass Universe" she references the half million glass slides Henrietta and other women used to document both the northern and southern skies.

The Matter of Everything with Dr Suzie Sheehy (288) Sep 15, 2024

Observe, Ask, Explain, Predict , Test. These are the steps scientists use to improve our knowledge. Dr. Suzie Sheehy is a particle physicist. She talks with Dr Karl about twelve significant experiments that changed the modern world.

https://drkarl.com https://suziesheehy.com

Converging with A-Prof Ball RPT (312) Sep 08, 2024

Data is omnipresent and society is very connected Thirty years ago futurists said tech "convergence" would deliver us seamless digital lives So are we there yet?. Dr Karl gets a fact check from "Converge" author Associate Professor Catherine Ball.

drkarl.com

Parrot Thinking with Prof Pepperberg RPT (327) Sep 01, 2024

Bird Brains are different. Professor Irene Pepperberg has been probing their psychology for decades. She is the author of the NY Times bestseller 'Alex and Me', the story of her 30-year experiment with a grey parrot.

Alex the parrot

Night Skies with Prof Lisa Harvey-Smith (351) RPT Aug 25, 2024

Auroras, fireballs and space junk. They are all visible. Prof Lisa and Dr Karl discuss how and where you might spot them. Also, how you can get your name into space.

drKarl.com

lisaharveysmith.com

Meet the Incretins with Dr Fuller (397) Aug 18, 2024

There is a family of chemicals that has drug companies popping corks. Obesity researcher Dr Nick Fuller explains to Dr Karl how they work and why they sometimes fail.

Healthy Parents Healthy Kids with Dr Nick Fuller

DrKarl

Eating for Beginners with Dr Fuller (396) Aug 11, 2024

Dr Karl (former father of the year) talks with Dr Nick Fuller (recent dad) about teaching children how to eat. The good habits learned early lead to healthy lives.

Healthy Parents Healthy Kids by Nick Fuller

DrKarl

SportsMaths 2 with Dr Tom Crawford (395) Aug 04, 2024

Dr Tom Crawford explains to Dr Karl how using fluid density might improve your sporting performance. Listen out for duelling and marathon running references.

TomRocksMaths

drKarl.com

SportsMaths 1 with Dr Tom Crawford (394) Jul 28, 2024

Playing sport on a rotating planet has advantages. Dr Tom Crawford gives Dr Karl tips on using Maths to score more goals and break records.

TomRocksMaths

Drkarl.com

Blinking Stars with Dr Kirsten Banks (393) Jul 21, 2024

When degenerate electrons meet 0.47 of a solar mass what happens? This is the start of Dr Kirsten Banks' PhD thesis. Dr Karl investigates the secret behaviour of Red Giants in the Milky Way and their Helium flashes.

Kirsten Banks (astrokirsten.com.au)

DrKarl.com

Avian Ancestry with Professor Simon Ho (392) Jul 14, 2024

The bird family tree may need pruning. Geneticists have made new connections that take us back to the great extinction event. Professor Ho explains to Dr Karl how this is changing our views on dinosaurs and chickens.

Prof Simon Ho

DrKarl.com

Dunkelflaute with Dr Barnes (391) Jul 07, 2024

Dr Karl learns a new German word 'dunkelflaute'. Rare in Australia yet it plays havoc in colder countries. Yet another reason why atomic reactors are a poor choice for Australia as Dr Barnes explains.

Dr Barnes

drkarl.com

Nuclear free Net Zero with Dr Rosie Barnes (390) Jun 30, 2024

Under current net zero plans, local renewables should directly supply 75% of our energy needs. What about the remainder? Dr Karl consults an engineer on why atomic reactors are a very poor choice for Australian conditions.

Dr Barnes

drkarl.com

Exceptional Moons with Kate Howells (389) Jun 23, 2024

Which planetary moons are the best? Space fanatic Kate Howells puts Dr Karl in orbit around some of our most interesting lumps of stuff. How will Earth's moon rate ?

@SpaceKateH

Drkarl.com

Long Covid (Part 2) with Professor Steven Faux (388) Jun 16, 2024

A shadow of Covid-19 lingers for many. Dr Karl continues his discussion with front-line clinician Professor Steven Faux. Good diagnosis and management offer some a healthy future.

drKarl.com

Long Covid

Long Covid (Part1) with Professor Steven Faux (387) Jun 09, 2024

Poor health lingers after some Covid-19 infections. Dr Karl discusses the symptoms and solutions with a front-line Australian clinician as they delve into his book 'Long Covid’.

drKarl.com

Long Covid

Seeing through doubles with Caitlin Thurn (386) Jun 02, 2024

Physics experiments, two centuries old, can still be used to probe matter and energy. Caitlin Thurn takes Dr Karl through the simple yet extraordinary results.

Corrections with Prof Lewis (385) May 26, 2024

Dr Karl fact checks with Professor Lewis. What is the current understood state of the Universe and how close is the end ?

Geraint F Lewis

Dr Karl.com

Blood Pressure with Prof Collins (384) May 19, 2024

Professor Clare Collins explains her ongoing research into one of the world's big killers - blood pressure.

Prof Clare Collins

Dr Karl

Dr Driessen decodes (383) May 12, 2024

Dr Karl visits a list of stellar phenomena with interpretive help from radio astronomer Dr Laura Driessen. Topics include brown dwarfs, proper motion, Jumbos and Universal wobbles.

https://astrolaura.com/

drkarl.com

Fart Busting with Prof Collins (382) May 05, 2024

Dr Karl investigates the science of rear emissions with a dietetics Professor Clare Collins. How much per day? What makes them smell? What makes them feel hot?

Prof Clare Collins

Dr Karl

The Nymphageddon with Dr. Trebicki (381) Apr 28, 2024

Crops under attack, falling nutrition, viruses spread by Insects. Dr.Trebicki researches agriculture on a warming planet and the news is not great. Dr Karl addresses the myth that Carbon Dioxide is good for all plants.

@PiotrTrebicki Dr Karl

Solid State Logic with Dr Lang (380) Apr 21, 2024

Silicon chips are everywhere. Will they continue to multiply ? Does meeting carbon reduction targets rely on Solid State efficiency ? Dr Karl talks benefits and costs with Dr Lang.

Dr Karl

Dr Lang

Ballooning for Dark Matter with Dr Sirks (379) Apr 14, 2024

Why use a balloon to hunt the most elusive suff in the Universe? Dr Sirks takes Dr Karl through the history of Dark Matter and why astronomy is only part of the solution.

DR kARL

Dr Sirks

Neonicotinoids with Dr Sanchez-Bayo (378) Apr 07, 2024

There is a perception that the worst pesticides were banned years ago. So why are Insects (including bees) in decline? Dr Sanchez-Bayo says a family of water soluble pesticides are to blame. He names them and wants to know why they are still being sprayed in Australia. Dr Sanchez-Bayo Dr Karl

iFasting with prof Varady (377) Mar 31, 2024

One of the most popular diets today was studied by professor Varady over 20 years ago. She now teaches in Chicago. Dr Karl finds out why intermittent fasting is so successful.

Dr Karl

Prof Krista Varady

Viral History with A/Prof Morgan (376) Mar 24, 2024

Cat ladies, Australians and Chickens have all helped to advance our knowledge of Viruses and their link with Cancer. Dr Gregory has investigated the history and written a book about how we got where we are.

dr Karl

A/Prof Morgan

X: @DrGMorgan

Threads: @dr.gregory.morgan

Blue Sky Social: @drgregorymorgan.bsky.social

Safe Design with Dr Sonya Brown (375) Mar 17, 2024

When Aircraft accidents happen we investigate how and why. Dr Sonya Brown tells Dr Karl about the process of improving safety and the importance of learning from incidents.

DrKarl.com

Dr Sonya Brown

Decoding Chaos #2 with Professor James (374) Mar 10, 2024

The observed Universe is very binary and occasionally poly. Professor James takes Dr Karl inside a collapsing star and suggests how the last ray of starlight will shine.

Dr Karl

Professor James

Decoding Chaos #1 with Professor James (373) Mar 03, 2024

How should we explain bumps in the observations of Stars? Cosmology is full of intangible forces. Professor Renee James explains "Helium Flash", why it is mostly invisible to us and when density matters.

Dr Karl

twitter@drcrj

Cleaner Air with Dr King (372) Feb 25, 2024

Lung Disease is killing more of us each day. As temperatures rise, why is our air more contaminated ? Dr King explains how it's happening and what to do about it.

Dr Karl

Dr Bronwyn King

The Standard pt 2 with Professor Lewis (371) Feb 18, 2024

In part 2, Prof Lewis introduces Dr Karl to Quarks, Leptons and Bosons. It's a messy subatomic zoo and still our Standard Model of everything.Avoid brain pain and listen to part 1 first .

Dr Karl

Professor Geraint Lewis

The Standard pt 1 with Professor Lewis (370) Feb 11, 2024

The Standard Model for everything ... is full of weird names and strange numbers. In part 1, Prof Lewis explains to Dr Karl how we got into this mess and why this mess still holds true.

Dr Karl

Professor Geraint Lewis

Vaper Trails pt 2 Prof. Chapman (369) Feb 04, 2024

Vapes are 21st century inventions but the science of smoking and its dangers are well known. Prof. Chapman tells Dr Karl how Vapes are likely to be worse than tobacco, why "Puff Parameters" lead to such conclusions, and how lung cancer became a top killer.

Dr Karl.com simonchapman6.com

Vaper Trails pt 1 with Prof. Chapman (368) Jan 28, 2024

On Jan 1st , Australians have new buying restrictions for vapes. Prof Chapman guides Dr Karl through the Science of Nicotine addiction, how to battle Big Tobacco and why access rules must change. Dr Karl.com simonchapman6.com

Sleep with Professor Siobhan Banks (292)RPT Jan 21, 2024

There are many sleep myths. Dr Karl clears up some with sleep researcher Professor Banks. So are there links between bad sleep and inflammatory disease?

drkarl.com

Creatures with Professor Dieter Hochuli (302)RPT Jan 14, 2024

Creatures surround us . All we have to do is look. Professor Dieter Hochuli shows us a living world right on our doorstep.

https://www.urbanfieldnaturalist.org/book

drkarl.com

@dieterhochuli

Medical Cannabis with Dr Bahceci (299)RPT Jan 07, 2024

Medicinal use of cannabis is a big deal. How many cannabinoid chemicals are there? How receptive is the human body? Can you drive a car after CB pain relief? The answers vary. Dr Karl and Dr Bahceci have the Australian science. Always check with your local authorities on the law. @DilaraB_PhD

drkarl.com

Arthritis supplements with Professor Collins (316)RPT Dec 31, 2023

Someone you know is being treated for Arthritis. Fifteen per cent of Australians suffer pain daily and there are few safe drugs. This has led to shelf loads of "supplements" and "alternatives". Does any of it work? Professor Collins compiles the best research to date. Most do nothing (so don't waste your health, time or money). nomoneynotime.com.au

drkarl.com

Sunscreen Science with Geoff Mutton (342) RPT Dec 24, 2023

What is the best way to protect your skin? Dr Karl seeks ground truths from an industrial chemist. Is it all in the science of drying paint ?

drkarl.com

Bee Genes #2 with Dr Remnant (367) Dec 17, 2023

Epigenetic jellies did not help. Feral bees made it worse. When a species-jumping parasite landed in Australia, our biosecurity controls ultimately failed. Bee geneticist Dr Remnant explains to Dr Karl how we lost round one against Varroa and the battles now being planned.

DrKarl.com

Dr. Remnant

Bee Genes #1 with Dr Remnant (366) Dec 10, 2023

Human prosperity has risen on the wings of bees - until recently. A species-jumping parasite has landed in Australia. Bee geneticist Dr Remnant explains to Dr Karl how and why this is so risky.

DrKarl.com

Dr. Remnant

Repair & Recovery with Dr Adrian Brown from NASA (365) Dec 03, 2023

Space hardware needs to be reliable, affordable and repairable. Recycling rockets and reprogramming helicopters are all part of a day's work for support staff.

Adrian Brown

Dr karl

Martian Bath Rings with Dr Adrian Brown from NASA (364) Nov 26, 2023

Salts prove Mars once had water. The rings tell us more about how and when this happened. Also the story of the lost chopper and how they found it. Dr Karl with first-hand accounts from Percy's driver.

Adrian Brown

Dr Karl

Billion-LY Bubble with Prof Lewis (363) Nov 19, 2023

Dr Karl gets a detailed briefing on a giant starry bubble just announced. Professor Lewis includes CMB, BAOs and traces of Dark Matter in his explanation.

DrKarl.com

Geraint F Lewis

G-Bombs with Prof Lewis (362) Nov 12, 2023

There are F Bombs in the Oppenheimer movie but no mention of G Bombs. Dr Karl probes Prof Lewis for the original source of atomic energy . The answer is surprising.

DrKarl.com

Geraint F Lewis

Knot Maths with Assistant Professor Lisa Piccirillo (361) Nov 05, 2023

Dr Karl meets Assistant Professor Lisa Piccirillo who unravelled an age-old knotty problem with four dimensional topology. Professor Piccirillo will deliver the Simon Marais Memorial Lecture at The University of Sydney on 7 November, register here.

Dr Karl

Professor Lisa Piccirillo

Cosmic Ticks #2 with Prof Lewis (360) Oct 29, 2023

How far can we "see" through Space-Time? Professor Lewis takes Dr Karl to a place where everything is in slo-mo (relatively). The discussion naturally concludes with Time Machines.

DrKarl.com

Geraint F Lewis

Cosmic Ticks #1 with Prof Lewis (359) Oct 22, 2023

How do Cosmologists measure Space-Time? Professor Lewis explains Einstein's clocks and the new cosmic ticks.

DrKarl.com

Geraint F Lewis

Space Law 102 with Duncan Blake (358) Oct 15, 2023

What governs the resources, risks and rewards on the Moon, Mars and beyond? Dr Karl gets a booster shot of Space law with specialist lecturer Duncan Blake.

Drkarl.com

Duncan Blake

Space Law 101 with Duncan Blake (357) Oct 08, 2023

What are the rules for human behaviour in Space ? Dr Karl gets an introduction to Space Law history with specialist lecturer Duncan Blake.

Drkarl.com

Duncan Blake

Soot & Seaweed with Prof. Tuthill & Tiahni Adamson (356) Oct 01, 2023

Stars & Cows with astrophysicist Prof Peter Tuthill & Wildlife Conservation Biologist Tiahni Adamson (356)

Busting big nicotine with Dr King (355) Sep 24, 2023

The story of how a local oncologist took a pledge against Big Tobacco to the United Nations and had it passed. Dr Karl talks with Dr Bronwyn King about her crusade against the merchants of preventable disease through tobacco-free portfolios.

drkarl.com

tobaccofreeportfolios.org

Tyre Chemistry with Dr Linda (354) Sep 17, 2023

Meet tyre nerd and chemist Dr Linda Mitchell. She works in stewardship - trying to improve our recycling of rubber. How many old Australian tyres are exported and burned each year? Way too many and Dr Mitchell knows how we can do better.

DrKarl.com TSA Lindylulu77

Cosmic Ripples with Professor Davis (353) Sep 10, 2023

Professor Davis and Dr Karl delve into the universal tensions and cosmic ripples. Are there frozen clumps at regular intervals leading back to the Big Bang?

drkarl.com

@tamarastro

Green Chemists Paul Anastas & John Warner (352) Sep 03, 2023

Dr Karl meets two Green Chemists. For 30 years they have been encouraging sustainable and cleaner chemical processes.

DrKarl.com

Dr Paul Anastas

John Warner

Starry Gravity with Professor Lewis (350) Aug 21, 2023

Will 2023 be the year that we both see and feel more gravity waves? Dr Karl probes Prof Lewis about what is so exciting linking LIGO with Pulsars.

DrKarl.com

Geraint F Lewis

Fusion Power with Professor Wilson (349) Aug 13, 2023

Meet a scientist working to build and test a fusion power plant. Fusion Professor Howard Wilson has intimate knowledge of plasma - the stuff inside stars - and what is needed to safely contain it on earth. Prof. Wilson

Star Shine with Kirsten Banks (348) Aug 06, 2023

PhD student Kirsten Banks takes Dr Karl on a deep journey towards a new candle standard. Stellar seismology and the search for exoplanets may make galactic maps more accurate. @Astrokirsten

Gene Therapies with Professor Alexander (346) Jul 30, 2023

Gene therapies are being approved for a growing number of conditions. Professor Alexander talks to Dr Karl about how they work and the decades of testing to make them safe.

Prof. Ian Alexander

Dr. Karl

Net Zero with Aussie Research (347) Jul 23, 2023

Nature needs our help to beat global warming. Dr Karl consults Prof D'Alessandro about her team's work to pull carbon out of the air using solar power. Professor D'Alessandro

Dr Karl

Hormones with Dr Vavrek (345) Jul 16, 2023

Around 20 years ago a worldwide hormone scare took hold. Was it a media beat-up? Dr Natasha Vavrek takes Dr Karl through the experiment that caused it and numbers that were misreported. Today HRT is called MHT and is safe again.

thebubbletasmania

DrKarl

Psychedelics and Therapy (344) Jul 09, 2023

Australia has implemented laws to permit the use of some psychedelic drugs in strictly controlled circumstances. Psychedelics researcher Dr Paul Liknaitsky and acclaimed author Heather Rose discuss the possibilities and complexities. #shirtloadsofscience

This podcast will discuss topics of mental health. If you find parts of this content confronting or distressing contact Lifeline on 131114.

Heather Rose

Dr Paul Liknaitzky

Neil deGrasse Tyson (343) Jul 02, 2023

Astrophysicist, author, and speaker Neil deGrasse Tyson joins Dr Karl to talk about science communication. Today needs global action based on solid science like never before - so how to frame it ?

July 23 NZ-Au-Sg Tour dates

Drkarl.com

Healthy chewing and eating with Prof Collins (341) Jun 19, 2023

Healthy eating begins in the mouth. How much should you chew food? What sized bites are best? Can Dental Health affect your gut? Dr Karl masticates these topics with Dietetics Professor Collins.

drkarl.com

Wind Physics with Dr Rosemary (340) Jun 11, 2023

Wind-powered turbines are powerful machines. So why only three blades? Dr Rosemary gives Dr Karl an introduction to the engineering and physics of getting electricity from air currents.

drkarl.com

Astro Units with Dr Laura (339) Jun 04, 2023

How can we measure space? Dr Karl consults a Radio Astronomer on units. Please note: Star Wars and Hans Solo references included.

drkarl.com

Radio Stars with Dr Laura (338) May 28, 2023

Could a black hole photobomb a star? Dr Laura Driessen explains.

drkarl.com

Reionisation with Prof Lewis (337) May 21, 2023

Too hot for synthesis ? Too cool to stick ? The early universe is a bog for electrons . Dr Karl gets the latest on Dwarfs vs Dwarves with Prof Lewis.

Energy and Cars with Dr Bjorn Sturmberg (336) May 14, 2023

Electricity is how Australians get to 43% net zero by 2030. Transport must be part of that plan. Dr Sturmberg has been testing strategies to put electric cars on the grid, in the home and out in paddocks.

Recorded in Dec 2022 information was correct then. bjornsturmberg.com

drkarl.com

Dark Mythbusting with Prof Lewis (335) May 07, 2023

Matter and Energy continue to raise shadowy questions in physics. Dr Karl tests some recent dark theories with Professor Lewis.

drkarl.com

geraintflewis.com

The Five Kilo conundrum with Dr Nick (334) Apr 30, 2023

Why do popular weight loss programs fail just when you feel they should work ? Dr Nick applies science to a healthy body and has good news.

drkarl.com

interval weight loss

Cosmic matching with Professor Lewis (333) Apr 23, 2023

In dating shows there is always the promise of a perfect match. Can this idea be found in Astrophysics ? Dr Karl checks with Professor Lewis.

drkarl.com

geraintflewis.com

Quantum Computers with Dr Jessica (332) Apr 16, 2023

What are quantum computers? Dr Jessica explains the world of quantum and what to expect in the decades to come.

Cosmic Monsters with Dr Jessica (331) Apr 09, 2023

What are the biggest black holes called? Supermassive. Dr Jessica Bloom talks about these cosmic monsters and the amazing technology used to photograph them.

Chatting with a Bot & Professor Toby Walsh (330) Apr 02, 2023

ChatGPT launched for free in 2022. Like Google it devoured vast data but regurgitated it in human-like responses. Is it truly a marvel? Dr Karl and Prof Toby Walsh put ChatGPT to the test.

Bioplastics with Dr Yi Shen (329) Mar 26, 2023

Future archaeology may see our time now as an "Age of Plastic". Already sedimentary rings are forming. Dr Karl discusses solutions with Bioplastics and Dr Yi Shen.

drkarl.com

Universe Now with Professor Geraint Lewis (328) Mar 19, 2023

The James Webb Space Telescope has expanded our Universal view. Where is it changing? Dr Karl gets an update from Professor Geraint.

drkarl.com

geraintflewis.com

Sino Moon Missions with Bradley Perrett (326) Mar 05, 2023

China has a Lunar landing program. It is as ambitious as NASA was in 1969. Dr Karl probes Space journalist Bradley Perrett on how soon we might see Chinese craft on the moon.

drkarl.com

Rocket Science 21C with Bradley Perrett (325) Feb 27, 2023

NASA vs Space X vs Virgin vs China vs Russia. Today's Space Race is multi-dimensional and growing. Australia is about to start its own program. Dr Karl talks with space journalist Bradley Perrett about the road ahead.

drkarl.com

Skeptic Success with Claire Klingenberg (324) Feb 19, 2023

"Alternative facts" ? Claire Klingenberg is an expert at debunking such things. In Europe she engages, listens and changes hardened conspiracy and "woo" theorists. She is the Chair of the European Council of Skeptical Organisations and shares her wisdom with Dr Karl.

@ClaireAccendit

Drkarl.com

Synthetic Biology with Professor Claudia Vickers (323) Feb 12, 2023

AI is hardware-based. It runs on electrons. Synthetic biology is where Biotech meets IT. It will revolutionise manufacturing & automation. Is a simultaneous Green & IT revolution on its way? Professor Claudia Vickers tells us more.

drkarl.com

Museum Science with Dr. Barker (322) Feb 05, 2023

Is fair pay for workers a modern idea? How about sustainable agriculture ? A Sydney museum has artifacts to show these are ancient concepts from far away. Should they be sent home? Dr Karl discusses the merits of archaeological repatriation with Dr. Barker.

sydney.edu.au/museum drkarl.com

Galactic Archaeology with professor Lewis (085) RPT Jan 29, 2023

Prof Geraint Lewis takes you back to the birth of our stars. He uses Optic fibres, Robotic observations, Grisms, Hermes and Galah. It all happens at the AAT using 2DF. All these terms are explained wonderfully. This is the art of looking at what's not there. (Warning this podcast may contain Backronyms).

60,000 years of stargazing with Kirsten Banks (107) RPT Jan 22, 2023

Kirsten Banks recently graduated from Sydney University. She has a deep passion for space and astronomy and writes on her twitter page "I won't be the next Brian Cox, I will be the first Kirsten Banks proud wirajuri woman ". Discover an entirely different view of the heavens from an Indigenous Australian. @astrokirsten

Eat your way to Happiness with Professor Collins (145) RPT Jan 15, 2023

Research is showing that "Happy" meals are real. Not only do you feel better at the dinner table, those feelings are long lasting. Also you can amplify the good effects by how you dine. Spoiler Alert - fast food is not the answer. http://healthyeatingquiz.com.au/

Value of a Life with Richard Denniss (225) RPT Jan 08, 2023

Covid19 is revealing stark truths. The preservation of human life is both economic and cultural. Is there a better path ? Dr Karl discusses the value of a human life with Australian economist Dr. Richard Denniss. Both sides of the balance sheet have merit.

Summers Link

Ethical Food with Professor McClements (212) RPT Jan 01, 2023

Eating ethically may become compulsory. If climate change escalates as estimated, carbon-intensive animals and crops may need to be rationed. Food scientist, Professor David Julian McClements, is optimistic that solutions may be at hand. Could we engineer less carbonised food and design a healthier diet ? Dr Karl samples the future of food.

drkarl.com

Mars #2 with Dr Adrian Brown (321) Dec 25, 2022

On the surface of Mars, the NASA Perseverance Rover is bottling rocks to be returned to Earth. How will they get back? Why are the samples so valuable? Dr Brown, Australian Scientist with the mission, has the latest news in the second part of his discussion with Dr Karl.

@DrAdrianJBrown1

drkarl.com

Mars #1 with Dr Adrian Brown (320) Dec 18, 2022

While planet earth was in Covid lockdown, a NASA spacecraft left for Mars. Perseverance ("Percy" to its friends) is on a mission to unlock planetary secrets. Dr Adrian Brown gives Dr Karl the latest news from the Martian surface. @DrAdrianJBrown1 drkarl.com

Coral Health with Dr. Wachenfeld (319) Dec 11, 2022

The world's largest coral reef is in trouble. Chief Scientist for Australia’s Great Barrier Reef, Dr Wachenfeld, talks with Dr Karl about what he is seeing. Twenty five years ago waves of hot water were first measured. They continue with intensity. Will the COP Accords be enough to save our reefs?

gbrmpa.gov.au\

drkarl.com

Dark Matter & Neutrinos with Professor Marcela Carena (318) Dec 04, 2022

Particle physics makes discoveries each day. Professor Carena gives Dr Karl the latest on the relationship between dark matter and neutrinos.

Professor Marcela Carena

DrKarl.com

Beyond Higgs with Professor Marcela Carena (317) Nov 27, 2022

Particle physics is amazing science. Professor Carena works on the edge and gives Dr Karl an insight into why bosons matter.

Professor Marcela Carena

DrKarl.com

The cost of Cancer with Professor Tindle (315) Nov 13, 2022

The last thing you expect to see at an oncology ward is a cash machine. Professor Robert Tindle discusses the unequal and sometimes unfair cost of treating cancer. Is your cancer common? Did a drug company successfully navigate the health system? In Australia the difference can be enormous. Robert's book is "Your Cash or your Cancer."roberttindlescience.com

drkarl.com

Invisible Infrared: James Webb Space Telescope with Professor Tuthill (314) Nov 06, 2022

Professor Peter Tuthill and Dr Karl live on stage at Sydney Ideas. They peel back how and why the James Webb Space Telescope (our Infrared Eye in the sky) has keys for survival. Earth is already out of balance with an extra 600,000 Hiroshima atom-bombs of heat every day. The good news? Climate change is measurable and can be stopped. Audio Podcast edited for listening pleasure.

Sydney Ideas event and video:

https://www.sydney.edu.au/engage/events-sponsorships/sydney-ideas/2022/peter-tuthill-karl-kruszelnicki-invisible-infared.html

drkarl.com

Breakfast of Champions with Dr Nick Fuller (313) Oct 30, 2022

If Antimatter exists, why isn't there anti-food ? Stuff you can eat to lose weight. Dr Fuller has discovered interesting results from 2020 research based on thermogenisis. This is not a diet. It won't take weight off but it could cut weight gain by 250%.

drkarl.com

interval weight loss

5 Numbers with Professor Lewis (311) Oct 16, 2022

Are there more questions than answers ? Dr Karl probes Prof. Lewis on 5 numbers from a Science magazine. How much (or little) do we know?

drkarl.com

geraintflewis.com

Aussie Aerospace with Taylah Griffin (310) Oct 09, 2022

Taylah Griffin shares her inspiring career pathway from her early passion for STEM to being the first Indigenous person in Australia to graduate with an Honours degree in Electrical and Aerospace Engineering. She now works for Boeing Defence Australia and is on a fast career trajectory. #shirtloadsofscience #indigenousSTEM

Psychedelic therapies with Dr. Bahceci (309) Oct 02, 2022

Psychedelic drugs in the 50s & 60s offered hope for relief from some mental illnesses. Lawful access to these chemicals was shut off in 1971 by US President Nixon. Fifty years later the science is mounting for their therapeutic use. Dr. Bahceci works in this area and explains to Dr Karl the latest research. This podcast discusses mental health and suicide. Some may find this confronting or distressing. If this material raises concerns for you, please contact Lifeline on 13 11 14 or Beyond Blue on 1300 224 636

drkarl.com

New Covid Vaccines with Dr Steain (308) Sep 25, 2022

Could 2023 be the year we stopped the Covid ? Dr Karl meets a Sydney virologist working on this mission. Dr Megan Steain gives a viral history of the past three years and an outline of her project to develop better vaccines.

drkarl.com

@m_steain

Space Comms with Dr. Badri Younes (307) Sep 18, 2022

Space exploration needs good communication. Dr. Karl grills NASA veteran Dr. Younes.

drkarl.com

Starbursts with Dr Adele Goodwin (306) Sep 11, 2022

Their guts are called Nuclear Pasta. You need X-Ray space telescopes to capture their burps. Observations take kiloseconds. What kind of stellar monsters are inhabiting our galaxy? Dr Adele Goodwin gives Dr Karl an insight.

drkarl.com

Monopoles & Inflation with Prof Lewis (305) Sep 04, 2022

Monopoles and Inflation are Cosmic. Professor Lewis shows Dr. Karl their theoretical universal origins.

Drkarl.com

geraintflewis.com

Our biggest Space Telescope with Professor Lewis (304) Aug 28, 2022

There are more than a new set of lenses on the JWST. It has better eyes, a giant sun shield and a new brain. Professor Lewis helps Dr Karl interpret the astounding images coming from our Lagrange point.

drkarl.com

geraintflewis.com

Agreeing to Disagree with Professor Arvanitakis (303) Aug 21, 2022

Antisocial behaviour is increasing. Why ? Professor Arvanitakis dissects the problem and gives Dr Karl some practical solutions.

drkarl.com

Prof Arvanitakis

Ice Cores with Dr Lenneke Jong (301) Aug 07, 2022

Near the South pole is a buried time machine. It can take us back to our Ice Ages . Dr Jong explains what it is and why science in Antarctica is crucial in understanding Climate Change.

Hydrogen with Dr Fiona Simon (300) Jul 31, 2022

So many earthly problems can be addressed- at least theoretically - with Hydrogen. Most involve switching from carbon but many engineering issues arise. We have never done this at scale. Is Hydrogen the answer? Dr Karl discusses a H2 Future with Dr Fiona Simon from the Australia's Hydrogen Council.

drkarl.com

h2council.com.au

Is fasting a fad with Dr Nick Fuller (298) Jul 17, 2022

The good news for intermittent fasters is that cutting calories reduces your weight. The bad news? Shorter eating windows may have no effect on your long-term health. intervalweightloss.com.au

Testing the BMI with Dr Nick Fuller (297) Jul 10, 2022

BMI (Body Mass Index) is a universal health tool. Dr Karl and Dr Nick delve into its past and why it still is an indicator of good health despite many shortcomings. intervalweightloss.com.au

Forensic Psychology with Associate Professor Helen Paterson (296) Jul 03, 2022

Forensic science explores physical evidence at a crime scene. So what does forensic psychology add? Can behavioural patterns be left at crime scenes? Associate Professor Paterson explains this new field to Dr Karl. drkarl.com

Quantum Computing with Professor David Reilly (295) Jun 26, 2022

All our computers are obsolete - theoretically. On the horizon are superfast devices operating close to the speed of light at the extremity of the limits of physics. This is the world of Professor David Reilly. Dr Karl gets a glimpse of the Quantum PC.

drkarl.com

A Gambler's Mind with Dr Tobias-Webb (294) Jun 19, 2022

What keeps gamblers in the game? How many wins? Not as many as you think. Sociologist Dr Tobias-Webb explains to Dr Karl why some imagine they are on a winning streak when they are not - and the technology exploiting these beliefs. A journey through the risk and reward structures of the human mind.

Drkarl.com

Jupiter with Professor Geraint Lewis (293) Jun 12, 2022

Jupiter is a huge planet. It is more than twice as massive as all the others combined. So what stops it from catching fire and becoming a star ? Professor Lewis describes the physics of gassy giants.

Babylon spreadsheets with Dr Daniel Mansfield (291) May 29, 2022

Babylonian clay tablets are not always as they seem. What looked like a Pythagorean spreadsheet turned out to be much more. An Australian mathematician has applied his rural experience and research skills to reveal links to social changes 4,000 years ago . Dr Karl and Dr Mansfield discuss why and how this is. NB - Base 60 will be mentioned. drkarl.com

Prof. Clare Collins with four ingredients for Health (290) May 22, 2022

Dietetics Professor Collins has found four ingredients to improve our health. They are inexpensive, easy to prepare and natural. She has even road tested recipes to try. htttps:\\drkarl.com https://nomoneynotime.com.au/

Prof Holmes & the COVID-19 Origin (289) May 15, 2022

Virologists now agree on the area where the COVID-19 epidemic began in Wuhan, China. Dr Karl asks Professor Holmes how they arrived at this conclusion and the photos he took of the site before the outbreak began.

https\\:drkarl.com

Hunting Exoplanets with Prof. Glazebrook (287) May 01, 2022

Earth-like planets are rare but the hunt for more is on. Professor Glazebrook is Principal Investigator for the James Webb telescope and introduces Dr Karl to the world of infra-red observation.

https:\\drkarl.com

Dr Adrian Brown : An Australian on Mars (286) Apr 24, 2022

Dr Karl talks with an Aussie who works full time on the surface of Mars. Meet Dr Adrian and his RC explorer "Percy". They are looking for water on the red planet and pushing the boundaries of science .

http:\\drkarl.com

@DrAdrianJBrown1

Kilonovas with Professor Tara Murphy #3 (285) Apr 17, 2022

Heard of Kilonovas ? Prof Murphy works with them all the time. What about Supernovas ? In an expanding universe do things always get bigger ? Dr Karl investigates.

https:\\drkarl.com

Missing Gold with Prof. Tara Murphy #2 (284) Apr 10, 2022

Once you find gravity waves, what's next ? Gold ! The most stable and heavy element we know of lies central to our interpretation of our cosmos. Coincidence ? Dr Karl consults Prof Murphy.

https:\\drkarl.com

Sensing Gravity with Professor Tara Murphy #1 (283) Apr 03, 2022

The 21st century has been huge for physics. We are now able to build experiments to test Einstein's theories. Professor Tara Murphy has been there and gives Dr Karl an insider's view of modern physics.

https:\\drkarl.com

String Theories with professor Greene (282) Mar 27, 2022

Resolving subatomic particles in an expanding universe is complex. Can multi-dimensional maths help ? Dr Karl visits Prof. Greene to find out what string theory is and if there are answers.

https://drkarl.com

https://www.briangreene.org

The natural way to cool our planet with Dr Zarin (281) Mar 20, 2022

Dr Daniel Zarin has spent his career studying and teaching the science of forests. In a conversation recorded at the Wildlife Conservation Society’s Bronx Zoo headquarters in New York City, Zarin tells Dr Karl why he recently left the philanthropic sector to become Executive Director for Forests and Climate at WCS and why trees are the asset we need to revalue today.

drkarl.com

wcs.org

Prevent Pandemics with Prof Holmes (280) Mar 13, 2022

Viruses. We know where they come from. We know how they spread. Virologist Professor Holmes from Sydney University lays a three-point plan to stop them with Dr Karl.

https://drkarl.com

Carbo-nomics with Dr Denniss (279) Mar 06, 2022

We want Cooler climates. Are carbon and coal are burning us up? Economist Dr Denniss runs his ruler over the climate ledger with Dr Karl.

https:\\drkarl.com

@RDNS_TAI twitter

Stolen Focus with Johann Hari (278) Feb 27, 2022

Is attention-loss corroding civilisation? When we we fail to comprehend, are we putting ourselves at risk ? Dr Karl sharpens his focus on the research of Johann Hari and his new book 'Stolen Focus'.

The Antikythera Mechanism with Dr. Andronis (277) Feb 20, 2022

The Antikythera Mechanism is a portable planetarium from Ancient Greece. It is 2200 years old and the first known analog computer. Dr. Nick Andronis built one. The front shows the zodiac position of the first 5 planets, sun, moon phase and date. On the back a 72 year lunar and Olympic calendar with solar or lunar ecliplses.

www.amclock.net

drkarl.com

Omicron + with Prof Holmes (276) Feb 13, 2022

2022 looked safe -then it wasn't . Dr Karl investigates with University of Sydney Prof Eddie Holmes. He was the first western source of the Wuhan genome. How could Omicron fool the world? How can we avoid being fooled again?

Electricity & Magnetism with Professor Lewis (275) Feb 06, 2022

We are counting on an electrified future to cut carbon emissions. Greener futures, as we plan them, depend on electricity and electro-magnetism. Dr Karl explores the physics of electricity and generators with Professor Lewis.

drkarl.com geraintflewis.com

Probiotics and Prebiotics with Professor Collins (274) Jan 30, 2022

Every week new supplements are announced and promoted. Some can be useful additions to your diet but what about probiotics and prebiotics ? Dietetics professor Collins explains what they claim, what is in them and if they help.

Electricity & electrons in a wire with Professor Lewis (273) Jan 23, 2022

Electricity is a great foundation for sustainable energy but Dr Karl discovers how little he knows about the physics of electrons. We all have much to learn about the source of power from Professor Lewis. drkarl.com geraintflewis.com

Stellar Lifecycles #2 with Professor Lewis (272) Jan 16, 2022

What colour is our Sun? (or Sol as local folks call it). How long will it stay that way? Professor Lewis resumes his fascinating journey in time space and consciousness. We pick up where things are now and go forward to the end. How does it all end? Listen with Dr Karl on this multi-trillion year trip.

drkarl.com geraintflewis.com

Stellar Lifecycles #1 with Professor Lewis (271) Jan 09, 2022

For some stars, life begins at 10 billion years. Professor Lewis leads Dr Karl on a trillion year expedition from birth to a young adult expanding universe. The first part of a fascinating journey in time, space and consciousness.

drkarl.com geraintflewis.com

Nuyina - Australia's new Antarctic Traveller (270) Jan 02, 2022

Australia has a new Antarctic Vessel. Jono Reeve takes Dr Karl on a virtual tour of the features of the RSV Nuyina.

drkarl.com

RSV Nuyina

James Webb telescope with Dr Jessica Bloom (269) Dec 27, 2021

There were high hopes for the Hubble space telescope. Eventually they were realised with pictures of galaxies beyond our widest visions. This century the James Webb promises both time and space with a different universal perspective. Dr Jessica Bloom on why this is a game changer.

Forever Young with Dr Bloom (268) Dec 19, 2021

The diseases of ageing are already overwhelming health care facilities. In the decades ahead, our older populations will put even more pressure on health unless there are medical breakthroughs. These diseases are proving stubborn to medicate and cures are very rare. A human fountain of youth has yet to show itself. In other animals, things appear easier to treat with less complex biochemistry to get in the way. Dr Bloom explains to Dr Karl why a family of proteins called Sirtuins may hold some hope.

Primordial Black Holes with Professor Lewis (267) Dec 12, 2021

In 1966, two Soviet cosmologists proposed the existence of primordial black holes. 55 years on, evidence mounts that these ancient bodies actually exist. They are the stem cells of the cosmos scattered on a universal matrix and may be pre-atomic. Professor Lewis takes Dr Karl back to the very beginning for an encounter with these dark beasts.drkarl.com geraintflewis.com

Static Electricity with professor Lewis (266) Dec 05, 2021

A zap from a doorknob or a lightning bolt that sets fire to a forest, these events are notoriously unpredictable. If there is an imbalance of electric charge, a Static Electricity event "might" happen. Things like air humidity or microscopic superficial bumps can play a role – but how much? Professor Lewis explains the known physics and yet-to-be discovered secret life of static electricity with Dr Karl.

drkarl.com

geraintflewis.com

Cannibal Stars with Professor Lewis (265) Nov 28, 2021

What happens when a star gets hungry? Could it eat another star? Cosmic cannibalism is a thing. 500 million years ago in a galaxy far, far away – to be precise, about 500 million light years away one of two stars gobbled the other. Professor Lewis explains to Dr Karl the physics and cosmology of devouring your neighbours.

drkarl.com geraintflewis.com

Covid comms with Professor Leask (264) Nov 21, 2021

Covid continues to test public health and communications. Our best explainers have put themselves in the front line to keep us safe. Some, including Professor Julie Leask, have been threatened. Dr Karl discusses why health professionals have been under attack for doing their Job.

drkarl.com

Planetary Climates close to home with Professor Tuthill (263) Nov 14, 2021

Venus and Mars may have once supported life. What went wrong? Professor Tuthill walks Dr Karl through the physics of changing climates on our neighbours. There are lessons for us Earthlings.

drkarl.com

Nobel Physics 2021 with Professor Tuthill (262) Nov 07, 2021

The 60s, 70s and 80s was when their prize-winning work was done., Their modelling made "Groundbreaking contributions to our understanding of complex systems". These Nobel physicists explored how to estimate climate changes with greenhouse gasses.

Nobel-2021

drkarl.com

Cyber Society with Professor Genevieve Bell (261) Oct 31, 2021

Cybernetics meets anthropology - Professor Genevieve Bell loves blended disciplines. She is a renowned anthropologist, technologist, and futurist. She spent more than two decades in Silicon Valley. Her passion - making tech work better with humans and social systems. Too often technologists forget human needs or exploit weaknesses. Both can lead to disaster. Dr Karl in conversation with a progressive Australian futurist.

htttps:\\drkarl.com

@feraldata

AI Myths #4-6 busted with professor Toby Walsh (260) Oct 24, 2021

Artificial Intelligence is proliferating so how deep will it penetrate society. Are Robot domestic helpers, interpreters, navigators, lawyers or judges on their way? What about autonomous nuclear submarines? Should we be drawing lines? AI expert professor Toby Walsh has answers for Dr Karl's questions.

https:\\drkarl.com

@TobyWalsh

AI Myths #1-3 busted with professor Toby Walsh (259) Oct 17, 2021

Artificial Intelligence is here and embedded in modern life. So how best to traverse those “uncanny valleys” between robots and humans? Can computer Art or Sculpture express human feeling? Could AI math (re-factorable numbers) keep us safer? Professor Toby Walsh is an expert and has answers for Dr Karl.

https:\\drkarl.com

@TobyWalsh

Dr Bloom and women in science (258) Oct 10, 2021

October 15th is Ada Lovelace Day and celebrates women in science, tech, engineering, and math. Ada was Lord Byron's daughter but most significantly she realised the potential of computers two centuries ago. Ada is now believed to be the first person to publish an algorithm. She is one of many women forgotten by science as Dr Jessica Bloom tells Dr Karl.

https:/drkarl.com

Australia's Chief Scientist, Doctor Cathy Foley (257) Oct 03, 2021

Doctor Karl talks with the Chief Scientist of Australia. Superconductors, Sunscreen, LEDs, Phonons, Vaccines - is anything off limits? In an age where science is everywhere how does a Chief Scientist operate ?

https://www.chiefscientist.gov.au/

Twitter @ScienceChiefAu

drkarl.com

What's eating Professor Davies ? Sep 26, 2021

Dr Karl and cosmologist professor Paul Davies discuss what we are still learning about the Universe. Antigravity, inflation, Olbers' paradox, extraterrestrial life - have been eternal puzzles. Piece by piece we are assembling a bigger picture ... but is it getting any clearer ?

https://drkarl.com/

https://beyond.asu.edu/

deepthought@asu.edu

A Cycling Universe with Professor Geraint Lewis (255) Sep 19, 2021

Is our universe one of a long cycle of repeating universes? Or is it something different? Dr K takes a ride with Prof Geraint through concepts of cycling universes.

http://www.drkarl.com http://www.geraintflewis.com

Marsupial Immunity with Professor Kathy Belov (254) Sep 12, 2021

130 million years ago marsupials roamed the earth along with dinosaurs. Today only marsupials survive. Dr Karl meets Professor Kathy Belov to discover their secrets of survival and what we are now learning from them. Anyone for koala peptides ?

http://www.drkarl.com

https://twitter.com/kathybelov

Globular Mysteries with Prof Geraint (253) Sep 05, 2021

Globular clusters are spherical collections of stars. The Milky Way has 150. Most galaxies have them. Professor Lewis gives an update on these freaky outliers. Are they are older and wiser residents of galactic space?

http://www.drkarl.com http://www.geraintflewis.com

Baryonic vision with Prof Geraint and Dr Karl (252) Aug 29, 2021

Did the Big Bang make a noise? Can we measure the acoustics of a star? Neutrons or Protons - which lasts longest ? A 20-year experiment has answers to questions we never thought of asking. Professor Geraint Lewis reveals to Dr Karl the power of the baryon.

http://www.drkarl.com http://www.geraintflewis.com

DrKarls Q&A school (244) Aug 22, 2021

On Wednesdays Dr Karl meets with school students around Australia (and sometimes overseas). He loves hearing what the curious young minds are thinking about. Their questions often set off new ways of thinking. Occasionaly the simplest questions are the hardest. This episode of Shirtloads is a Q&A session with the students from Aspendale Primary School, Victoria in May 2021. Enjoy! https://drkarl.com

CUAVA-1 - Australia's Blue Carbon Space mission (250) Aug 15, 2021

Dr Karl investigates Australia's latest CubeSat mission. It's called "CUAVA-1" and aims to measure blue carbon from space. Geosciences Associate Professor Eleanor Bruce is coordinating the team of researchers mapping coastlines for aquatic vegetation. Space Physics Professor Iver Cairns is squashing the technology into a package the size of a fat packet of biscuits.

Dr Karl uncovers a truly Australian "Apollo 13" story . It includes a fishing line, amateur radio enthusiasts and a clever ground crew who "worked the problem". The mission was INSPIRE-2. Professor Eleanor Bruce and Professor Iver Cairns tell this extraordinary story.

drkarl.com

@arc_cuava

Cuava1 Cubesat

The INSPIRE-2 CubeSat incident (249) Aug 08, 2021

Dr Karl uncovers a truly Australian "Apollo 13" story . It includes a fishing line, amateur radio enthusiasts and a clever ground crew who "worked the problem". The mission was INSPIRE-2. Professor Eleanor Bruce and Professor Iver Cairns tell this extraordinary story.

drkarl.com Inspire2 Cubesat

@arc_cuava

Gravitational Waves & Black Holes with Professor Susan Scott (248) Aug 01, 2021

In 2015 our observable universe unofficially added a new dimension. Dr Karl talks with ANU Professor Susan Scott about why she had to keep the discovery of gravitational waves a secret. Also how gravitational waves are helping us understand black holes so much better. @ozgravityguru

drkarl.com

Gravitational Waves & Neutron Stars with Professor Susan Scott (247) Jul 25, 2021

In 2016 our observable universe officially added a new dimension : Gravitational waves. On that international LIGO team was an Australian theoretical physicist. Dr Karl talks with ANU distinguished professor Susan Scott about those observations and what Neutron stars may be revealing about their insides.

@ozgravityguru

drkarl.com

Extreme Sailing with Lisa Blair (246) Jul 18, 2021

The fastest circumnavigation route by sea is via the Southern Ocean around Antarctica. It is also the most dangerous. Australian solo sailer, Lisa Blair, has been there once already. She now is trying again . Dr Karl finds out why.

lisablairsailstheworld.com

drkarl.com

Matthew Evans & Soil Symbiosis (245) Jul 11, 2021

At best, Earth is 1/3 soil. In recent years much has turned to dirt. This too-little-reported extinction crisis threatens us all. Chef and Farmer Matthew Evans gives Dr Karl his insight on the inch-thick survival strategy that could save us. We need to reinhabit the surface of our earth with a natural biome.

drkarl.com

Matt Evans

Utes & Unis with Dr Richard Denniss (244) Jul 04, 2021

Budgets are economic planning documents. Spending will feed growth. Cuts cause shrinkages. So what do Australian budgets say about the future ? Dr Karl asks economist Dr Richard Denniss' for his insights into the choices for 2022 and beyond. (Ute=Utility=Pickup (USA) & Uni=University)

@RDNS_TAI

Drkarl.com

Biodiversity G Zero with Alana Burton (238) Jun 27, 2021

Dr Karl meets a PhD student studying frogs on Australia's East Coast. Many species are on the edge of extinction. Frogs living on the fringe of human habitations are most at risk. So how best can we best care for biodiversity ?

IUCN Redlist

Frog ID App

ebird

Collagen with prof Clare Collins (235) Jun 20, 2021

Celebrities often support pills, potions and creams that purport to make you look younger. What about dietary supplements for your skin ? Jennifer Aniston became the face of one brand’s collagen campaign recently. Is there any science in it ? Professor Clare Collins tells Dr Karl.

the conversation

nomoneynotime

Sirtfood diet decoded with Prof Clare Collins (234) Jun 13, 2021

Dietician Professor Clare Collins gives this celebrity diet expert analysis. UK singer Adele claimed it transformed her (along with Pilates and a personal trainer). The diet is based on a group of proteins called "Sirtuins". Adele sang its praises but is Sirtfood a fad, a fact or something in-between?

the conversation

Journey into a Nucleus with Professor Lewis (236) Jun 06, 2021

What is inside the heart of an atom ? Why does it stay together ? The relative dimensions of atoms are huge - Imagine a fly in a cathedral (the fly is a nucleus). Professor Lewis takes Dr Karl on a journey to the center of matter as we know it. drkarl.com www.geraintflewis.com

Keto vs Carbs with Dr Nick Fuller (233) May 30, 2021

Dr Karl visits Dr Nick to compare two currently popular diets - the Low carbohydrate and the Ketogenic diet. . Dr Fuller talks through the basics of both and and what you can do to make lasting healthy changes.

@drnickfuller

intervalweightloss.com.au

Corals Classified with Sage Fitzgerald (237) May 23, 2021

Taxonomy is how science classifies life. Sage Fitzgerald is a coral taxonomist and in this episode she schools Dr Karl on how it works. They discuss the phoenix project and the chase for new coral species and news from the Great Barrier Reef. Sage is also involved in the ‘Pint O Science’ Festival running until 28 May 2021.

@seasciencesage

coralprojectphoenix.org

Best Diets with Dr Nick Fuller (232) May 16, 2021

Dr Karl visits Dr Nick for an analysis of the latest diets. In Covid times it is harder to stay in shape. Dr Fuller talks through the basics and what we can do to make healthy changes that last. @drnickfuller

intervalweightloss.com.au

Dr Karls' Deepest interview with Tim Macdonald (231) May 09, 2021

An interview with one of the pilots of a 10.9 km dive into the Mariana Trench. It is deeper than Everest is high . The two-seat submersible is capable of withstanding huge forces and Dr Karl discusses the extreme physics and engineering needed to build and test the craft.

drkarl.com

Muons matter with Professor Lewis (230) May 02, 2021

When subatomic particles make news, Dr Karl and Professor Lewis are ready to help. The "chubby electron" has been neglected for decades, so why the fuss ? By popular request here is a special episode dedicated to why muons matter.

www.geraintflewis.com

http://drkarl.com

Future Universe History part 5 with Professor Lewis (229) Apr 25, 2021

What happens when the temperature seriously drops? Will "Dead Star" be more than a David Bowie album? Are protons the new Time lords? How Cool is a cool Universe ? Proessor Lewis updates Dr Karl on what the end of time miht look like.

www.geraintflewis.com

http://drkarl.com

Future Universe History part 4 with Professor Lewis (228) Apr 18, 2021

"Falling towards Virgo" is a big something . Our galactic future is wrapped up in it (according to current physics). Prof Lewis leads Dr Karl through our projected future. Also tips on how to spot Geraint's personal Quasar.

www.geraintflewis.com

http://drkarl.com

Future Universe History part 3 with Professor Lewis (227) Apr 11, 2021

The Kruszelnicki-Lewis sagas continue. The Future History part 3 is Unashamedly from an Earthling perspective it is based on accepted current theories. Professor Lewis confesses he's a Silurian. www.geraintflewis.com

http://drkarl.com

For completists "Future Universe History' parts 1 & 2 were eps 215 & 216.

Trillion Dollar fix with Rowan Hooper (226) Apr 04, 2021

Imagine you have a trillion dollars to solve some really big problems. Things like climate change, disease and poverty. Dr Karl meets Rowan Hooper from the New Scientist, who has written about the economics of giant projects. They are more affordable, some pay for themselves and some become more expensive the longer we do nothing.

@rowhoop

drkarl.com

Quarks, Leptons, Bosons and beyond with Professor Lewis (224) Mar 21, 2021

When atoms were smashed, particle physics went nuts. The subatomic domain should describe everything but so many pieces are missing. Dr. Karl and Professor Lewis look inside the atom in this podcast. So what the flip is subatomic particle physics ?

drkarl.com

Particle Physics with Professor Lewis (223) Mar 14, 2021

Our lives are governed by physics. It is the science of matter and energy and without both we wouldn't be here. This past century we have discovered more about physics than ever before. Dr. Karl and Professor Lewis are going atomic in this podcast. So what the flip is particle physics ?

Drkarl.com

Affluenza with Richard Denniss (222) Mar 07, 2021

A disease has infected our civilisation. It is not a virus but we created it. Dr Richard Denniss calls it "Affluenza" and it may ruin everything if we don't fix it soon.

@RDennisTwitter

Curing Affluenza

Drkarl.com

Electric Cars Downunder with Bridie Schmidt (221) Feb 28, 2021

Australia is sunny and flat. It should be the perfect place for Electric Vehicles. So why are Australians so slow to buy them ? Dr Karl asks lead journalist, Bridie Schmidt, from thedriven.io newsletter about the sluggish takeup downunder.

The trip of a Lifetime with Professor Lewis (220) Feb 21, 2021

Dr Karl has a thought experiment for Professor Lewis. What if you could travel at one Earth G (9.8 m/s^2). How far could you go in one human lifetime ? The answer and explanation will astound you.

Infinity and Beyond with Dr Jessica Bloom (219) Feb 14, 2021

Boundless. Limitless. The concept of Infinity has been with us for millennia. Dr Jessica leads Dr Karl on some mind experiments to see how our finite minds comprehend the universal.

Four diets compared with Professor Clare Collins (167) Feb 07, 2021

Four popular diets. Professor Collins gives two a conditional tick. It's Fast vs Mono vs Noom vs Charcoal. Can you pick the best ? Years of expertise sorts the dangerous from the reliable - rpt

drkarl.com

the conversation

How to save the world in 20 minutes (60) Jan 31, 2021

Dr Karl takes up the challenge of saving the world . Joining him are fellow doctors Derek Muller and Petr Lebedev. All three are in the Science communication business. So how do we convince the world to act on climate change ?

Annie Handmer, Australia's Space Diplomat Jan 24, 2021

Specialist jobs are being created right now. Annie Handmer is ahead of the game as a "Space Diplomat". If junk from the sky kills your satellite or pollutes your land then space law applies. You need representatio. Who to call ? Discover how innovation and passion fuel a fresh generation of innovators.

White Drink Scams - Dr Nick Fuller lifts the lids with Dr Karl Jan 17, 2021

A new drink category has sprung up in your supermarket. The Labels say "Milk" but what's really inside ? On the internet you'll find all kinds of nice things being said, but some of these products have hidden health hazards. Loss of bone mass, weight gain and bad cholesterol buildup are some of them. Others are lousy value for money. Doctor Nick lists the healthy and economical choices for every diet. @drnickfuller www.intervalweightloss.com.au drkarl.com

Laughter is Infectious. Can we use it for good ? - with Alanta Colley ? Jan 10, 2021

International Health Workers witness daily tragedies . Sometimes they get sick too. Where are the science comedian without borders? Meet Alanta Colley. With many tales to years abroad, she talks of the parasites she's been infected with, those she's seen and read about. Does Dr Karl & Dr Alice test the formula "Tragedy+Time = Comedy". rpt

Stand-up Mathematician, Matt Parker, on Monster Maths Mistakes Jan 03, 2021

When maths goes wrong in the real world , it can cost billions. Dr Karl quizzes Matt Parker on the mishaps with planes, bridges, drilling and PAC-MAN. From unboxing calculators for YouTube to why footballs should be donuts (if you believe the signs), this is Recreational Mathematics. A comedy of errors with some brilliantly told disaster stories. RPT

drkarl.com

Nuyina - Australia's new Antarctic explorer (219) Jan 02, 2021

The Secret Life of Stars part 2 (big ones) with Professor Lisa Harvey-Smith (218) Dec 27, 2020

Stars come in many sizes. Dr Karl visits the large and strange with Professor Lisa Harvey-Smith. The professor and Dr karl wrestle with "the Secret Life of Stars".

drkarl

lisaharveysmith

The Secret Life of Stars with Professor Lisa Harvey-Smith (217) Dec 20, 2020

How old is our sunlight ? What is our Sun made of ? Where do we rank in the stellar nursery ? Professor Lisa Harvey-Smith and Dr Karl wrestle with "The Secret Life of Stars".

drkarl

lisaharveysmith

Future Universe History part 2 with Professor Lewis (216) Dec 13, 2020

From star nurseries through physics and chemistry, the Kruszelnicki-Lewis explanation of the lot continue. Unashamedly from an Earthling perspective it is based on accepted 2020 theories. Professor Lewis confesses he's a Silurian. www.geraintflewis.com

http://drkarl.com

Future Universe History part 1 with Professor Lewis (215) Dec 06, 2020

Dr Karl and Prof Lewis describe our universal beginnings Where did we come from? Where are we going? At a crossroad of Nordic and Celtic cultures this is the first part of a groundbreaking podcast. Universal Origins 101

http://drkarl.com

www.geraintflewis.com

Black Hole Ergosphere with Professor Geraint Lewis (214) Nov 29, 2020

Dr Karl has his mind blown by the Ergosphere. Black Holes reveal themselves as engine rooms of the Universe. Spinning Black Holes add another dimension. Who knew they spun? Who knew that made such a difference? Professor Geraint Lewis on the evolving science of darkness.

www.geraintflewis.com http://drkarl.com

Value of Life with Professor Richard Denniss (213) Nov 22, 2020

Covid-19 has sparked global debate about the balance between commerce and the cost of health care. Does a life have a price ? If so, what is it ? Economist, Richard Denniss, talks Dr Karl through the Australian Government budget papers where a dollar value is listed. ( Note this varies around the world)

drkarl.com

Dr Karl's Surfing Safari through Science (211) Nov 09, 2020

Bernie Hobbs guests Shirtloads to talk about "Dr Karl's Surfing Safari through Science " with Dr Karl. His latest book has spiders, anuses and Black Holes. Nothing is off limits. It also includes pop-up Dr Karl holograms. Find out how.

drkarl.com

Nanotech Food with Professor David Julian McClements (210) Nov 08, 2020

Could we feed a growing population, reduce greenhouse gases and improve sustainability at the same time? Professor David Julian McClements thinks so. He says nanotech foods have answers and they may even be healthier. Critics say , like GM crops, nanotech has to be low risk and beat consumer resistance. A nutrition revolution or frankenfood ? Dr Karl gets a taste of a future. Drkarl.comhttps://www.umass.edu/foodsci/faculty/d-julian-mcclements

Black Holes and the 2020 Nobel Prize with Professor Lewis (209) Oct 25, 2020

...and the 2020 Nobel Prize in Physics goes to - Black Hole Research - split three ways. 50% to Roger Penrose and his "robust prediction of Einstein's general theory of relativity". Andrea Ghez and Reinhard Genzel shared the rest for finding "a supermassive compact object at the centre of our galaxy". Dr Karl probes Prof. Lewis on what this means and why Black Holes have glowing rings.

www.geraintflewis.com http://drkarl.comhttps://www.nobelprize.org/prizes/physics/2020/summary/

The Simulation with Professor Lewis (208) Oct 18, 2020

Is this real or a Simulation ? How much science and how much fiction is there in movies like the Matrix, Fantasia, Total Recall or Dark Star? Is this a rehearsal ? How might we tell ? Dr Karl does a 2020 reality check with Professor Geraint Lewis. www.geraintflewis.com http://drkarl.com

The Brightest Stars with Professor Lewis (207) Oct 11, 2020

Which stars shine brightest ? Professor Geraint Lewis tells Dr Karl about the ultra-shiny heavenly objects he has found. www.geraintflewis.com http://drkarl.com

Life on Venus with Dr Bloom (206) Oct 04, 2020

Sixty years ago Venus was our twin - tropical but possibly Earth-like. NASA's 1962 Mariner 2 mission blew that up . It showed Venus unfit for life - too hot with hostile chemistry. Glimmers of hope have recently appeared. Doctors Jess and Karl discuss life on Venus. With sharper instruments and more knowlege of Life - what are the chances?

www.drkarl.com

When Black Holes collide with professor Geraint Lewis (205) Sep 27, 2020

We are learning more about Black Holes with the latest detection Technology. Prof. Geraint Lewis tells Dr Karl about how we found black hole twins, how we know they are not identical and what it means for Einstein's predictions. www.geraintflewis.com http://drkarl.com

The Universe has a Dark Side with Professor Geraint Lewis (204) Sep 20, 2020

Dr Karl probes Professor Lewis on the latest on Dark Matter. Is it evenly spread ? Are there Dark Halos ? Galactic contact - fact or fiction ? Big questions with the best answers we have at the moment. (Trigger Warning - ep includes Dark Light)

www.geraintflewis.com

drkarl.com

How Bent is our Universe ? with Dr Jessica Bloom (203) Sep 13, 2020

An episode of colossal proportions on the shape of space. Your mind will be blown in multiple dimensions. Dr Jessica also explains to Dr Karl three ways the Universe can end. (Trigger warning : none have a restaurant and donuts are mentioned many times).

Food for Health with Dr Nick Fuller (202) Sep 06, 2020

Dr Karl visits Dr Nick for a health and diet check-up. In Covid times it is harder to stay in shape. Dr Fuller talks through the basics and what we can do to make healthy changes that last - whatever your age. Twitter: @drnickfuller Website: www.intervalweightloss.com.au More from Dr Nick include Fasting(164), Worst and Best(140), Salt(124), Fads(120), White Drinks(114 ) & Diet(86)

Top Galactic Neighbourhoods with Prof. Geraint Lewis (201) Aug 30, 2020

Are "Goldilocks" zones overrated ? Can the mediocrity principle be overturned ? What about outer Galactic suburbs - are they the place to be ? Dr Karl and Prof Lewis discuss interstellar Real Estate and the best places to live.

www.geraintflewis.com

http://drkarl.com

Faster than Light with Prof. Geraint Lewis (200) Aug 23, 2020

Speed limits are painful. So why is there a light speed limit on space travel (299,792km/s) ? Surely we can bend Einstein without breaking the Universe. Dr Karl (antigravity enthusiast) and Professor Geraint Lewis (real scientist) take it to the limit. How fast can we go ?

Black Hole Families with Dr Jessica Bloom (199) Aug 16, 2020

Meet the Black Hole family. Dr Jessica Bloom takes Dr Karl through the three we've identified so far. So do they do more than suck ? Was Roger Penrose on the money when he suggested darkness as an energy source? The big questions are discussed in this second dark podcast.

Black Hole Origins with Dr. Jessica Bloom (198) Aug 09, 2020

Extraordinary discoveries are being made in the galactic darkness. Dr. Jessica Bloom assembles the historical, theoretical and observational data that are causing a rethink of black holes. Why are they at the astrophysical crossroads ? And Dr Karl estimates our civilization's Kardashev ranking - how advanced are we ? Part 1 of a double black hole podcast. https://drkarl.com/ https://en.wikipedia.org/wiki/Kardashev_scale

Entropy with Prof Geraint Lewis (197) Aug 02, 2020

Entropy comes from the Greek word for transformation. It is often used to describe the irreversible evening-out of stuff. In astronomy it is often called "the Heat death of the Universe". Entropy originated with the centuries-old laws of thermodynamics. So how is Entropy holding up? Dr Karl and professor Geraint Lewis put it to the test.

http://www.geraintflewis.com

http://drkarl.com

Shuttle vs Soyuz vs Dragon - Rocket Science with professor Geraint Lewis (196) Jul 26, 2020

2020 is a milestone in space travel. The International Space Station received astronauts from a privately owned mission. So how do the USA's shuttle, Russia's Soyuz and Musk's Dragon stack up ? Doctor Karl and Professor Geraint Lewis review the modern history of human space flight.

http://www.physics.usyd.edu.au/~gfl/ http://drkarl.com

How constant is the Hubble constant with professor Geraint Lewis (195) Jul 19, 2020

Ninety years ago we first measured the rate of our expanding Universe. Today our accuracy is better but the new techniques are producing different numbers. Are there gremlins in our measurements or is it the Universe travelling in unexpected ways ? Dr Karl and Prof Geraint Lewis discuss this huge question. http://www.physics.usyd.edu.au/~gfl/ http://drkarl.com

Fast Radio Bursts and Magnetars with professor Geraint Lewis (194) Jul 12, 2020

First observed in 2007, FRBs are becoming a very useful astronomical tool. In 2020, flashes were analysed and suggested an answer to that age-old question about the Universe. Most of it is unobserved - so where is it hiding ? Dr Karl and Prof Lewis take a walk through the FRBs and Magnetars, the new phenomena making headlines .

Drkarl.com

https://theconversation.com/half-the-matter-in-the-universe-was-missing-we-found-it-hiding-in-the-cosmos-138569

The concept of Proof with Professor Geraint Lewis (193) Jul 05, 2020

What does "proving" a theory really mean ? Is there a difference between Scientifically proving or proving it Mathematically ? Dr Karl and Prof Geraint Lewis discuss the meanings of these ideas and how they are applied today. From pandemics to climate change, we depend on solid science - so how do you tell if something has been proved? http://www.physics.usyd.edu.au/~gfl/ http://drkarl.com

Prof. Anita Ho-Baillie and Perovskite Solar Cells (192) Jun 28, 2020

Solar PV Panels have transformed our energy mix in the 21st century. Efficiency is up and costs and carbon emissions are lower. What next ? Imagine a solar film that squeezes 10% more out of the sun ? Professor Anita Ho-Baillie walks Dr Karl through solar PV and this phenomenal new approach. Barely 10 years in development, is there a Perovskite Solar efficiency race already ?

Cosmic Rays with Dr Jessica Bloom (191) Jun 21, 2020

They're Cosmic ... but are they Rays ? Dr Karl gets the briefing from a recent University of Sydney astrophysics graduate, Dr Jessica Bloom. Cosmic Rays were found ages ago and still baffling us with more questions. Dr Jessica and Dr Karl go to the ends of the earth on this cosmic quest. https://drkarl.com/ https://www.facebook.com/astrokitten/photos/

Covid-19 - The Tests with Prof Eddie Holmes (190) Jun 14, 2020

Lockdowns are a rational first response to a pandemic but what happens while we wait for a vaccine or treatment to be developed ? Dr Karl joins Prof Holmes in Part 3 of this series looking at Covid-19 tests. What is the difference between them ? Professor of Virology, Eddie Holmes also explains how our immune system fights a virus and why this one has been so hard to beat - so far. @EdwardCHolmes https://drkarl.com/

Note: episode recorded in late May 2020 using data available at the time

Covid-19 - The Numbers with Prof. Eddie Holmes (189) Jun 07, 2020

Pandemics are complex so we rely on statistics to manage them. So how come the numbers vary so much around the world? Dr Karl asks Virology Professor Holmes why and also discovers which local factors also affect Covid-19 statistics. Australia's secret national chook stockpile is revealed and Professor Holmes estimates the rubbery-ness of some well known figures. Note: episode recorded in late May 2020 using data available at the time. @EdwardCHolmes https://drkarl.com/

Covid-19 - Viral History withProf Eddie Holmes (188) May 31, 2020

Virology and evolutionary biologist Professor Eddie Holmes takes Dr Karl time travelling to visit a deadly virus. Many of today's treatments took thousands of years to develop. Smallpox proved to be a tough virus to manage but it also taught us how to fight back. From skin scratching to cows, the American Civil War, Baltic mummies and DNA - Science finally stopped smallpox in its tracks. @EdwardCHolmes https://drkarl.com/ Note: episode recorded in late May 2020 using data available at the time

Covid 19's chemical enemy (187) May 24, 2020

A-Prof Alice Motion explores the chemistry and properties of the 29th element for Dr Karl. This persistent contact killer is amazingly passive (nothing else is needed). We've known of its benefits for thousands of years and yet chrome, plastics and stainless steel prevail in our healthcare facilities. @all_isee @_breakinggood https://drkarl.com/

When Stars are born, they Shake (186) May 17, 2020

Dr Simon Murphy explains to Dr Karl the extraordinary behaviour of a star in the early stages of life. Observed only recently, it widens our understanding of new stars. https://www.sydney.edu.au/news-opinion/news/2020/03/10/astronomy-new-type-of-pulsating-star-discovered.html http://drkarl.com

The Great Attractor (185) May 10, 2020

We can't see the Great Attractor but we've measured its presence. We're falling into Virgo and Virgo can't resist its force. Is Dark Energy involved? What is the "zone of avoidance"? Professor Geraint Lewis helps Dr Karl with his homework. http://www.physics.usyd.edu.au/~gfl/ http://drkarl.com

The Cosmic Revolutionary's Handbook (184) May 03, 2020

Dr Karl & Prof G. Lewis discuss the gaps and guesses that string together our understanding of the Cosmos. So what happens if we find a mistake in one of Einstein's predictions ? It's one of the discussion points in Geraint Lewis' latest book written with Luke Barnes. https://www.booktopia.com.au/the-cosmic-revolutionary-s-handbook-luke-a-barnes/book/9781108486705.html drkarl.comhttp://www.physics.usyd.edu.au/~gfl/

Squeezing Stars with Prof Geraint Lewis part two (183) Apr 26, 2020

It's part two of the Neutron star exploration with Professor G. Lewis. He takes Dr Karl layer by layer down to the core. Things are so squashed in there that quantum physics takes over. Escape from the lockdown inside a star where things go subatomic. http://www.physics.usyd.edu.au/~gfl/

Squeezing Stars with Prof Geraint Lewis part one (182) Apr 19, 2020

What happens when you squeeze a star ? Dr Karl gets inside one with Professor G. Lewis. They travel from the subatomic level up with the latest on Neutron Stars. Trigger Warning - Quarks and Bosons are mentioned . It's part one with more from the Neutrons next time. http://www.physics.usyd.edu.au/~gfl/

Stellar tides with Prof Don Kurtz & Dr Simon Murphy (181) Apr 12, 2020

To study the stars, look to the ocean. Water ebbs and flows under the influence of gravity. Astronomers see tides in moons, stars and around black holes. Dr Karl talks with two astrophysicists who recently measured a bulging star with earth-like tides.

A Perfect Poo with prof Claire Collins (180) Apr 05, 2020

A perfect poo has metrics. Dr Clare and Dr Karl describe the best solid expressions. Length, thickness, mass and diet. What makes the perfect poop ? https://theconversation.com/had-constipation-here-are-4-things-to-help-treat-it-123364

Einstein, Newton & Frame Dragging with Prof Geraint Lewis (179) Mar 29, 2020

Seventy-five percent can be described by Einstein. The remainder? It drove Albert to question his work till his dying day. Dr Karl and Dr Lewis discuss evidence for the missing theory . http://www.physics.usyd.edu.au/~gfl/

3 doctors on Carbon, the Sun and Xenobots (178) Mar 22, 2020

They're back ! Dr Karl on why carbon dioxide is so insidious in the atmosphere. Dr Alice Motion on the best Instagrams yet of our sun and Dr Jessica Bloom on the rise of bio-robots. The original shirtloads gangsters are in the lab.

Dr Michael Mann (177) Mar 15, 2020

American climatologist Michael Mann drew a chart back in 1999 . It's called "The Hockey Stick Graph" because of the way it shoots up. There was no new information in it and it drew on agreed international temperature data. Like Charles Darwin, Dr Mann dared to publish. His "hockey stick" still makes him a target for fossil fuel lobbyists. So what happens when a scientist is taken on by powerful interests ? Dr Karl asks him about the experience.

Hyper Velocity Stars with Prof Geraint Lewis (176) Mar 08, 2020

One star, observed in outback Australia, may hold new clues to dark matter and black holes. It's a milky way neighbour but moving very fast. Prof Geraint Lewis takes Dr Karl on his quest for answers. http://www.physics.usyd.edu.au/~gfl/

Corey Tutt - NSW Young Australian (175) Mar 01, 2020

The Young Australian of the Year Award recognises 16- to 30-year-old Australians. It rewards their achievements and contributions. Dr Karl meets Corey Tutt, the NSW winner for 2020. Corey has already made an extraordinary difference with his Deadly Science initiative.

The Hubble Tension with Prof Geraint Lewis (174) Feb 23, 2020

The Hubble Space Telescope launched in 1990. It is named after the American astronomer who found our universe was expanding. Ninety years on, with much better kit, Hubble’s ideas still hold. The question is how fast are we inflating? This is the Hubble tension and Prof Geraint Lewis leads Dr Karl through the deep space discussion. http://www.physics.usyd.edu.au/~gfl/

Cats & "Toxo" - from Kitty Litter to the eyeballs with Professor Justine Smith (173) Feb 16, 2020

What is the science behind warning pregnant women to stay away from cat faeces ? It involves a parasite (called "Toxo" for short) that migrates between humans and their cats. The risk to unborn children is real and world renowned expert, Professor Justine Smith, takes Dr Karl through the life cycle from Kitty Litter to the eyeballs.https://www.flinders.edu.au/people/justine.smith

Ultra-Processed Foods and Drinks and the harm they do. (171) Rpt Feb 02, 2020

A dietary study in Europe reveals a connection between processed foods (and drinks) and cancers. 8 years of research they tried to eliminate factors such as socioeconomic and diet preferences from the data but the link remains strong. What does it mean for you ? Doctor Karl and Professor Claire Collins discuss.

https://theconversation.com/research-check-will-eating-ultra-processed-foods-give-you-cancer-91984

Walking After Eating with Kyra Sim (169) Rpt Jan 19, 2020

Dr Kyra Sim treats takes Dr Karl through The benefits of exercise - after eating. @kyrasim

Ice Ages with Tas Van Ommen (168) Rpt Jan 12, 2020

We are officially in an interglacial period - between ice ages. Dr Karl talks with Australian Glaciologist Dr Tas van Ommen about the times when Ice sheets were a kilometre thick. What caused them and how long did they last. Understanding our climate history is our best chance for anticipating its earth's future. Recorded in Antarctica

Shark spotting with drones (167) Rpt Jan 05, 2020

Dr Karl and AI expert Dean Blumenstein from UTS Sydney discuss the application of drones being deployed on Australian beaches. Can deep learning improve on helicopter surveillance ? Could a drone save someone faster than lifeguards ? How safe in are we in the hands of AI ?

Australian Bird Bonding with Prof. Gisela Kaplan (166) Dec 29, 2019

Guardian Australia's 2017 bird of the year was the Magpie. They are notorious for swooping and pecking bike riders so why are they so popular ? Dr Karl joins Prof Kaplan in the cradle of bird life. Australia saved the birds and some of the smartest ones are still here. https://www.panmacmillan.com.au/9781760554200/

Fasting - Just another Fad ? Dr Nick Fuller investigates (164) Dec 15, 2019

Dr Nick Fuller investigates the claims behind fasting diets and why today, most of us will end up where we started and feeling Hangry. He and Karl go through a recent study to show how deceptive it can be. It's not willpower that lets us down but something much deeper. There are proven long-term plans - fasting is not one of them. Twitter: @drnickfuller Website: www.intervalweightloss.com.au

Greening the Reef to save the fish with Dr Daniela Ceccarelli (163) Dec 08, 2019

Marine Biologist Dr. Daniela Ceccarelli has been studying the Great Barrier reef for around 20 years. She lives and works there and has uncovered some of the complex relationships between seaweed, algae, fish and coral. One of her surprising discoveries involves the humble Damsel fish. Dr Karl talks to her on Magnetic Island about her research and containing the damage that agricultural run-off and sea temperatures are having on reefs.

Our most important Sex Organ with Dr Amee Baird (162) Dec 01, 2019

What controls our sex life ? Dr Amee Baird has a tremendous insight into this. As a clinical neuropsychologist, she has studied many people whose sexual behaviour suddenly changed. It remains a taboo subject for many, and so she has written a book about what she has learned. Dr Karl spoke with Dr Amee Baird in Sydney about her book "Sex in the Brain". https://newcastleneuropsych.com.au/dr-amee-baird/

Dr Karl's Random AR Road Trip with Dr Bernie (161) Nov 24, 2019

Dr Bernie probes the Augmented Realities inside Dr Karl's new book. Are the 3D animations impressive ? Do the walking, talking virtual Karls look amazing on her phone ? Is this the new frontier in science publishing ?

https://drkarl.com/books/

The Thai Cave rescue with hero anaesthetist Dr Richard Harris (160) Nov 17, 2019

2019's Australian of the Year Award was most unusual, shared between two extraordinary people - Veterinary Surgeon, Craig Challen and Anaesthetist Richard Harris. They were pivotal in the rescue of a Soccer team trapped in a cave deep in the mountains of Thailand. In this special 50-minute podcast Dr Richard Harris takes Dr Karl through that extraordinary cave rescue during the South-east Asian Monsoon. https://www.penguin.com.au/books/against-all-odds-9781760890957

Space Archaeology with Dr Alice Gorman (159) Nov 10, 2019

Dr Alice Gorman is an internationally recognised leader in the emerging field of space archaeology. So how do you create a job like that? It begins with rubbish. Dr Alice takes Dr Karl back to the fundamentals of preservation and how to sort space junk from the keepers. @drspacejunk.

Unboiling an Egg with Prof Colin Raston (158) Nov 03, 2019

How do you un-boil an egg? A Professor of Chemistry showed what was possible and won an Ig-Nobel Prize. It's all about the structure of proteins and how you fold them.

Fire Tornados - How Jason Sharples used Maths to predict fire behaviour (157) Oct 27, 2019

Firestorms attacked Australia's Capital City in 2003. Four people died. Dr Karl meets Prof Jason Sharples. His analysis has altered the world's understanding of fire. In certain conditions fires jump, dance and then go their own way .

https://www.unsw.adfa.edu.au/our-people/associate-professor-jason-sharples https://en.wikipedia.org/wiki/Navier%E2%80%93Stokes_equations https://www.youtube.com/watch?v=5H1eVy6O3Fo https://en.wikipedia.org/wiki/2003_Canberra_bushfire

What and where is Life? (156) Oct 20, 2019

The discovery of a planet beyond our solar system was rewarded with a share of the 2019 Nobel Physics Prize. Thousands more exoplanets have since been discovered but is there life out there? Rocket propulsion Scientist Dr Rachel Brachman and astro-chemist Dr Michael Malaska join Dr Karl to scope how and where to start looking for signs of life beyond Earth.

https://solarsystem.nasa.gov/scientist-for-a-day/home/ https://eyes.nasa.gov/ https://projectpanoptes.org/ @WATSONpstar

Life Out There - the new science of Astrobiology (155) Oct 13, 2019

2019's Nobel Physics prize was shared by three Astrophysicists: Jim Peebles for his Big Bang cosmology plus Michel Mayor and Didier Queloz for their discovery of exoplanets. To discover life out there, we need Astrobiologists. Rocket propulsion Scientist Dr Rachel Brachman and astro-chemist Dr Michael Malaska are turning their talents towards biology and the search for extra-terrestrial life.

Vaccination Saves us - with Dr David Isaacs (154) Oct 06, 2019

Polio, smallpox, measles, whooping cough - the list goes on. Vaccination has saved more human lives than other treatments. Dr David gives Dr Karl the facts on our biggest medical miracle - training our immune system to fight deadly invaders.

Sand Talk with Tyson Yunkaporta (153) Sep 29, 2019

Dr Karl embraces Sand Talk. The first Australians have been exchanging complex concepts this way for 60,000 years. Climate Change and the nature of Time can both be discussed (in Sand Talk).Tyson Yunkaporta and Dr Karl share traditional wisdom and science.

https://www.bookdepository.com/Sand-Talk-How-Indigenous-Thinking-Can-Save-World-Tyson-Yunkaporta/9781925773996

NASA Flight Director Matt Abbott (151) Sep 15, 2019

July 2019 marked 50 years since the Apollo moon landing. Days later, Chris Kraft, a visionary behind Mission Control and Nasa's first flight director died aged 95. Dr Karl talks with Matt Abbott - a flight director for 40 shuttle missions. Matt worked on the ISS Robotic arm and is now fine-tuning mission control for the upcoming Orion missions - returning to the moon and beyond. @Aquarius_Flight

Kate Cole on protecting yourself from Silicosis (150) Sep 08, 2019

Silicosis is a deadly lung condition. It is an occupational disease traditionally associated with stone masons and miners. Today new generations are at risk. From workers on infrastructure to home handy-persons cutting concrete, fine particles of silica can be inhaled without the right protection. Kate Cole tells Dr Karl how to stay safe.

Kate Cole Silicosis Science and History (149) Sep 01, 2019

Digging big holes is dangerous work. Silicosis is a cumulative and sometimes fatal disease resulting from breathing in certain types of dust from broken rocks. Kate Cole is Occupational Health and Hygiene Manager for the new Sydney Metro. She talks with Dr Karl about the history and science of dust diseases.

The Rust that Kills Breakfast (148) Aug 25, 2019

Romans used Red Dog sacrifices but could not stop it. Decades ago Science slowed the red fungi with new strains of cereal crops. Food security is back in the headlines and the battle is not over according to Professor Robert Park. Winds continue to spread deadly spores that kill the wheat crops we rely on. robert.park@sydney.edu.au

The Lancet diet with Dr Kyra Sim (147) Aug 18, 2019

Dr Karl and Dr Sim work through a Diet that balances the needs of farmers, ecologists and your body to find a natural balance. The diet (published in the Lancet) is meant to challenge us towards a sustainable and healthy future.

Autism is so diverse that researchers need a spectrum (146) Aug 11, 2019

Dr Karl talks with University of Sydney researcher Marilena Demayo about the complex process of identifying and unravelling autism. @MMDeMayo

3 Doctors on Carbon, Black Holes and Car Keys (144) Jul 28, 2019

How to make Graphene at home, how to visualise a Black Hole and the accidental Car Key immobiliser. Doctors Karl, Alice and Jessica with the latest.

The Symbiology of Corals and how it might save them (143) Jul 21, 2019

It's 20 years since our first modern Global Coral Bleaching event. Now they are regular, harder and faster. A deadly trio of climate change conditions are killing corals. Dr Emma Camp, a Marine Bio-geochemist, is at Ground Zero on Australia's Great Barrier Reef. She might have discovered some micro-biological interactions that could throw corals a lifeline. @emmafcamp https://emmafcamp.com/

Data Visualisation with Dr Emi Tanaka & Dr Karl (142) Jul 14, 2019

Statistics are essential today.They are complicated and easy to misinterpret. Clearly communicated results can make a world of difference to new ideas. Dr Emi and Dr Karl discuss smart ways to reveal your data. http://soapboxscience.org/soapbox-science-2019-sydney/

The Worst (and Best) Diets of the year (140) Jun 30, 2019

41 recent Diets have been ranked by US Health professionals. Dr Nick Fuller takes Dr Karl through the top and bottom of the chart. Is there a new Number One this year ? Will it be the 5/2, Keto, Dash or Mind ? Before you start your next diet, listen to this Podcast. Twitter: @drnickfuller Website: www.intervalweightloss.com.au

The Landfill that ate Cranbourne (139) Jun 23, 2019

Dr Gavin Scherer tells Dr Karl of an Environmental catastrophe that engulfed a brand new Australian suburb. How did it happen? What did it take to fix? A blow by blow account of what it takes to undo decades of bad choices. http://bit.ly/2JZqXmi

PFAS, Will they be around forever ? (138) Jun 16, 2019

The PFAS family of chemicals were Jet-Age wonders. Now some of them are biohazards that can cause cancer in high concentrations. PFAS are proving very hard to contain and break down. Dr Gavin Scherer has the job of finding them and making them safe. https://www.aecom.com/au/pfas/ https://www.epa.nsw.gov.au/

Walking after Eating may be very good for you (137) Jun 09, 2019

Dr Kyra Sim treats takes Dr Karl through The benefits of exercise - after eating. @kyrasim

3 Docs on Astro AI, Danish Bugs and reverse psychology. Drs Motion, Supernova and Karl Return (136) Jun 02, 2019

How we are training computers to look and see like us, how young Danish Citizen Scientists discovered new bacteria and the Benjamin Franklin effect - no kites or thunderstorms involved. Dr Alice Motion, Dr Jessica Supernova (aka Bloom) and Dr Karl return.

Eat more of these foods (136) May 26, 2019

Tongue to tail, our bodies need this more than ever. The science is absolute - hearts, brains, bodies, guts - this works. It's affordable, tasty and we all need more of it. Bananas, popocorn and high cocoa dark cholocate ? Professor Claire and Dr Karl both have upped their fiber intake. http://healthyeatingquiz.com.au/

Drilling for Clues with Dr Tas van Ommen (134) May 19, 2019

Geology reveals deep history. For recent history , 1 to 2 million years, glaciology has answers. The bubbles buried in ice in Antarctica are like a time machine for our atmosphere. Earth's Ice Ages are out of kilter and we need to know why. Dr Karl and Dr Tas van Ommen talk about the next 4 Antarctic summers of drilling required to discover what is really going on.

Our Ice Ages with Dr Tas van Ommen (133) May 12, 2019

We are officially in an interglacial period - between ice ages. Dr Karl talks with Australian Glaciologist Dr Tas van Ommen about the times when Ice sheets were a kilometre thick. What caused them and how long did they last. Understanding earth's history is our best chance for anticipating its future.

Insects, Cinema and Chemicals (132) May 05, 2019

In the 60's the Green Revolution promised to feed the world. It succeeded with huge productivity gains, new products and profits. Now we are discovering a legacy. Plus More than 40% of this species are declining and a third are endangered. Plus does you body smell different while watching certain movies. Dr Alice Motion and Dr Karl discuss.

Wastewater Science with O3 (131) Apr 28, 2019

Did you know the atmospheric layer that shields us can also clean dirty water ? Meet 3 MegaKennies. Scientists who know about ozone and how to use it. Australia's largest music festival site produces a Megalitre of waste per day for a few weeks each year. They have a plant that ticks all the environmental boxes. Dr Jake O'Brien, Ben Kele and Guy Scott explain. https://researchers.uq.edu.au/researcher/16984

Antarctic Krill, Bubbles and Whales with Dr Gwen Fenton (130) Apr 21, 2019

As the Christian world marks almost 2,000 years of Easter, Dr Karl searches for million-year-old air bubbles. The Chief Scientist for the Australian Antarctic Division, Dr Gwen Fenton, outlines why it will take 4 antarctic summers to drill for air that will answer fundamental questions about Climate Change, plus Krill and the fish that Dr Karl stopped eating.http://www.antarctica.gov.au/

Dean Ahern Antarctican Allrounder (129) Apr 14, 2019

To operate at the earth's extremities you need a special skillset. Dean has been a professional chef, mining machine operator and martial arts instructor. Dr Karl discovers how this produces rock solid members of our Antarctic support team. Dr Karl traveled south to Casey research station as part of the Australian Antarctic Program. @AusAntarctic

Prof Suzie and Jordan Digging in the Antarctic Dirt (128) Apr 07, 2019

Antarctica has virgin soil which is frozen most of the year. Inside are some of the most hardy and unusual life forms including Tardigrades. RMIT Professor Suzie Reichman and PhD Student Jordan McCarthy are studying the local species and to trying to answer how they survive and how tolerant they are to human occupation. Dr Karl traveled south to Casey research station as part of the Australian Antarctic Program.@reichman_lab @AusAntarctic

Antarctic support with Sharon Labudda (127) Mar 31, 2019

For every Scientist in Antarctica at least 5 support staff are needed. Dr Karl meets one of them. Sharon Labudda. She's in logistics but will turn her hand to fixing engines, carting supplies or getting scientists and their experiments done safely. Dr Karl also gets a lesson in how to speak Antarctican. What's a Yellow Hagg, the AAD, a Deezo or an FTL? Dr Karl traveled south to Casey research station as part of the Australian Antarctic Program. @AusAntarctic

How Antarctica is melting with Dr Ben Galton-Fenzi (126) Mar 24, 2019

If you want to know how Global Warming works, ask a Glaciologist. Dr Karl talks with Dr Ben Galton-Fenzi about his measurements on the Totten Glacier - one of the fastest flowing in Antarctica. His measurements, models and predictions are rewriting the timetable for ocean level rises. Dr Karl traveled south to Casey research station as part of the Australian Antarctic Program. @AusAntarctic

Dr Karl, Dr Alice and Antarctica (125) Mar 17, 2019

Dr Karl gives Dr Alice a first hand report on Antarctica in February 2019. So how is climate change affecting the area ? Who are the scientists and what are Australians like living in our coldest territory ? Dr Karl traveled south to Casey research station as part of the Australian Antarctic Program @AusAntarctic

The Salty Truth with Dr Karl & Nick Fuller (124) Mar 10, 2019

We all need Salt, but too much makes you sick. Too much for too long kills you. So how much is enough and which foods have it ? Dr Nick busts FIVE common Myths to help you toward a simple lower-salt lifestyle plan. Feel better and you're likely to lose some weight. Twitter: @drnickfuller Website: www.intervalweightloss.com.au

Damien Manuel on CyberWar (123) Mar 03, 2019

Dr Karl probes Damien Manuel from Deakin University on the foundations of modern Cyber warfare. From Stuxnet to Brexit, Trump16 and IIWAM, our Digital space is being warped and manipulated. Part 2 on Dr Karl's 2019 Cybersecurity podcast.

Damien Manuel on spotting Cyber Warriors (122) Feb 24, 2019

Dr Karl probes the Director for Centre for Cyber Security Solutions, Damien Manuel, on digital safety. Smartphones, Digital health records, Credit Cards, Huawei and the most common types of cyber warriors. Update your shields in 2019 because smart refrigerators can launch DDOS attacks. Karl and Damien discuss the telltale signs and what to do.

Saving lives with a drop of Blood Plasma (121) Feb 17, 2019

Dr Karl meets Daniel Alexander. Daniel donates blood plasma every second week. Find out how his particular blood can save the lives of babies. His body chemistry is rare and he's one of oly 150 Australians currently supporting this vital program. Blood is central to life and our immune system. Donating in Australia https://www.donateblood.com.au/

Not-so-super Foods- Dr Nick Fuller & Fads that Fail (120) Feb 10, 2019

Imagine something that would undo all the bad stuff you put in your mouth. Now that would be a Super Food. Superfoods do not exist and Dr Nick Fuller takes Dr Karl through recent claims. Twitter: @drnickfuller Website: www.intervalweightloss.com.au

Spotting sharks with drones - Dr Karl & AI expert Dean Blumenstein (119) Feb 03, 2019

Dr Karl and AI expert Dean Blumenstein from UTS Sydney discuss the application of drones being deployed on Australian beaches this summer. Can deep learning improve on helicopter surveillance ? Can a drone save someone from drowning faster than lifeguards ? How safe in are we in the hands of AI ?

Deep Neural Networks - The growth of Artificial Intelligence (118) Jan 26, 2019

Two decades in and the 21st century being swarmed by digital services - both wanted and unwanted. Dr Karl discusses how we've got here - and where we're going with AI expert, Dean Blumenstein from UTS Sydney. When deep neural networks have lifetimes of human learning inside, Are we heading towards a safer space ?

Science Olympics ? They exist ! (117) Jan 20, 2019

Meet Rebecca Whittle, an Australian Teenage Gold medallist in the 2018 Science Olympics. Rebecca was part of a four-member team representing us at the International Earth Science Olympiad. While sports dominate media, it is brain power that will provide for our future. Discover more and the games set for Adelaide in 2019. asi.edu.au amt.edu.au https://www.facebook.com/AustralianScienceOlympiads

The Antarctic Treaty and Space Law (116) Jan 13, 2019

An aspiring space diplomat tries to determine space law using the Antarctic Treaty. Both were set in the Cold War but the times have changed. Compare and contrast with Dr Karl and Annie.

Ultimate organic cleaner, Enzymes & Mongolia (113) Dec 16, 2018

Is the ultimate cleaning compound a human byproduct ? What if Evolution was part of an experiment ? Can a Virus kill Bacteria ? Plus Dr Karl reports on his recent visit to Mongolia.

Highlights from the Ignobel & Nobel prizes (112) Dec 09, 2018

Dr Karl & Dr Alice bring you some of 2018's remarkable innovations. A process that transformed manufacturing and surgery, the "Deborah" Number and why a team of researchers went to a Post Office to investigate Male Erectile Disfunction. https://twitter.com/DoctorKarl

Guidelines for relief of Lower Back Pain (111) Dec 02, 2018

7% of the listeners to this podcast will be affected by attacks of lower back pain. For both men and women it is a debilitating condition. Worse still, some prescriptions result in death. Professor Chris Maher challenged orthodoxy in a 2018 Lancet article with a set of treatment guidelines. Dr Karl helps decode the article for you.

https://www.nps.org.au/ http://sydney.edu.au/medicine/people/academics/profiles/christopher.maher.php

The day Ergonomics took a dive with Prof Chris Maher (110) Nov 25, 2018

You are qualified and experienced. An invitation comes to speak at an international conference. Your research questions 30+ years of practice. Which path do you choose ? You know most of your audience will walk away disappointed. If you're Prof Chris Maher you follow both the Scientific Method and Hippocratic Oath. Is it evidence based ? Is it subject to independent testing ? Does the practice harm patients ? That day Ergonometrists walked away unhappy but it was a victory for patients in pain. Dr Karl and Prof Chris Maher discuss the day ergonomics took a dive.

http://sydney.edu.au/medicine/people/academics/profiles/christopher.maher.php

The Chemistry and Science of Eating (109) Nov 18, 2018

Obesity, Diabetes and Heart Disease are ruining the lives of otherwise healthy people. Many of us are at risk through uninformed choices. Doctor Karl consults dietitian Dr Kyra Sim and analytical chemist Dr Yvette D'Entremont for the latest. Did you know your lungs play a huge role in weight management ?

How does a maths teacher become an Australian Local Hero ? Meet Mr Woo (108) Nov 11, 2018

Eddie Woo is Head Teacher Mathematics at a government high school in Sydney, Australia - and a whole lot more. He is someone with a gift for teaching and is now internationally regarded for the lessons he posts online with his woo tube channel. https://misterwootube.com/

Artificial Intelligence and the people problem (106) Oct 28, 2018

A.I. is already surrounding us. The internet, cars, courts, recruitment agencies. Already serious issues are surfacing. For instance removing prejudice is proving very difficult. The data sets we train our devices with are imprinting our own society back into the system. Author Ellen Broad leads Dr Karl inside the machine with her book "Made by Humans : The AI Condition". https://www.mup.com.au/books/made-by-humans-electronic-book-text

The future of Everything with Tim Dunlop (105) Oct 21, 2018

Inequality. How dangerous is it ? Are our democracies fair ? Author Tim Dunlop says even the Ancient Greeks didn't trust their democracy to popularity contests. They recognised human weakness and used alternatives. Tim also has a convincing explanation of how privatisation fails and why hope exists. Dr Karl and the future of everything with Tim Dunlop. https://www.newsouthbooks.com.au/books/future-everything/

How to illuminate your big idea (104) Oct 14, 2018

Dr. Katerina Kimmorley co-founded Pollinate Energy, a solar startup, in Bangalore India. She's since helped expand that business to three more cities, cutting carbon and transforming lives. What drove her from Sydney to the the London School of Economics and the Clean Energy Finance Corporation ? Dr. Kimmorley tells Dr Karl - (and is at the Sydney Spark statup festival). https://www.eventbrite.com.au/e/the-role-of-women-entrepreneurs-in-tackling-climate-change-tickets-49158532494 http://sparkfestival.co/program/#

Bill Bailey & Dr Karl on the Ascent of US (103) Oct 07, 2018

Two Polymaths share stories from the past few Millennia. Bill reveals his DNA profile and links to European History. Karl on Empires and psychopaths. Who said the week should be 7 days long ? How Unready was Ethelred ? Many of Bill Baileys tour dates are sold out. Dr Karl had Laryngitis at the time of recording and has recovered.

The 300 million year old Killer we are still learning about (99) Sep 09, 2018

They're 300 million years old. They're almost invisible and they are deadly. Cubozoa, Box jellyfish or Irukandji, are both the smallest and the most venomous jellyfish in the world. There are more than 50 species and Dr Karl joins Lisa-ann Gershwin on her hunt for more. When Box jellyfish fire their stingers, the pain and other symptoms are collectively known as Irukandji syndrome and it can kill. But something as thin as pantyhose can save your life - how does that work ? http://lisagershwin.com

Science Degrees - What are they Good For ? Aug 26, 2018

What careers open up for Physics graduates? What if you add a PhD in Chemistry? Meet Sydney University graduate Dr Michelle Deaker talking with Dr Karl about her journey. She started with some entrepreneurial spirit and then added an eye for opportunity. Dr Michelle turns research and ideas into products and then takes them to market. Her Australian venture capital portfolio includes a world-leading vaccine Nanopatch, a watch for tracking dementia patients and a new diagnostic in oncology. Got a new idea for Dr Michelle ? one-ventures.com.au

Longitude - Our gateway to the fourth dimension (96) Aug 19, 2018

Longitude was maritime history’s greatest scientific breakthrough. Dr Karl discovers why with Kevin Sumption and James Hunter from the Australian National Maritime Museum in Sydney. What connects Lieutenant James Cook to the early computers ? Extraordinary nautical tables and accurate clocks. From these innovations space exploration was possible. (from 2016)

Avian Intelligence with Professor Gisela Kaplan (94) Aug 05, 2018

The original "AI" could be Avian - and from Australia. Professor Gisela Kaplan with Dr Karl of her research on why Australian birds are smarter than their Northern cousins. NOTE = Professor Kaplan is highly qualified with vast experience treating wild birds. Do NOT attempt her methods at home. The talons of birds of prey can result in serious injury.

Ultra-Processed Foods and Drinks - what harm can they do ? (92) Jul 22, 2018

A dietary study in Europe reveals a connection between processed foods (and drinks) and cancers. 8 years of research they tried to eliminate factors such as socioeconomic and diet preferences from the data but the link remains strong. What does it mean for you ? Doctor Karl and Professor Claire Collins discuss.

https://theconversation.com/research-check-will-eating-ultra-processed-foods-give-you-cancer-91984

What is Real ? (91) Jul 15, 2018

Three Cases cracked by Three Doctors. From Floppy Hats, to Firebirds, The Dark Knight and the Broken Escalator Phenomenon. Doctor Karl is joined by Alice and Jessica as the explore the science behind three observed phenomena. The fire carrying birds of Northern Australia, the dark orbiter that will not die and why people brace themselves when there is no apparent danger. (from 2017)

Why Great physics is Messy with Dr Helen Czerski (90) Jul 08, 2018

Dr Karl and Dr Helen - talking about .World's longest echo, how to photograph the molecules inside an explosion, Oceans, Coffee rings and climate change. Physics today is "messy" and "complex" and she loves it. (from 2017)

The "E" in STEM - Dr Karl & Dr Kanga talk Engineering (89) Jul 01, 2018

Meet Dr. Marlene Kanga, president of an international governing body looking after 2 million engineers. Our future depends on innovation. The creative application process is what Engineering is all about. She talks with Dr Karl of the value Engineers bring to society, which areas attract female engineers, and what Australia can do to catch up with other leading nations.

Dark Matter Quest (87) Jun 17, 2018

So you want to solve the Dark Energy conundrum ? Then you need to be patient. It'll be clumpy, relativistic and you'll be seeing double at times. It will take you to Chile and Germany. Dr Karl explores Dr Lewis's quest for a universal holy grail.

DIET is a 4 Letter word - but it doesn't have to be (86) Jun 10, 2018

95 % of diets fail. By middle age you will try over 60 diets and 19 times out of 20 you will not lose weight. Australia is now the 5th fattest nation on earth (ahead of the UK). Join Dr Karl & Dr Fuller from Sydney University and a plan that is friendly to the human condition . Fad diets will fail. On average we will spend more than 30 years on diets during our lifetime. With a $60 billion weight loss industry, do they really want you succeed? www.intervalweightloss.com.au

How to get a PhD in Whale Watching ? (84) May 27, 2018

Meet one hardworking Sydney Uni student, Vanessa Pirotta. She works with a boat and a drone. Off Sydney (and in Antarctic waters) she has developed a health profile of migrating whales without touching them. Whales have a 12 month gestation cycle. They synchronise with the seasons. From the tropics to the roaring 40's marine mammals have a story we must listen to.

Top 10 researcher in the World (83) May 20, 2018

When Nature magazine published the top 10 researchers of 2017 there was one Australian. A radio astronomer ? no. A paleontologist? no. She is a professor of Molecular Oncology working with the "the Post-Truth Initiative". Doctor Karl interviews our world leading researcher on how she beat fake science. "Seek and Blast" is the software she helped develop in her spare time. An uplifting story on beating the cheats.

The Aussie Space Program - it's Hypersonic (82) May 13, 2018

Hypersonic space injection is different. It's fast like a Kangaroo, Air breathing like a lungfish and reusable like a keepcup. UQ's Professor Michael Smart takes Dr Karl through an Australian development that could jumpstart the space program downunder. It has been part of a research program spanning 30 years and Hypersonics could be ready to fly in 5 years says Professor Michael - (with an injection of money).

Dangerous Diet Supplements (81) May 06, 2018

Dr Karl and Dietetics Professor Claire Collins measure popular weight-loss supplements against the scientific literature. She finds one supplement you could easily overdose on. She finds another that has only ever worked in Japan. How much actual evidence is there ? Save your money and Listen. Proven and affordable solutions are here.

Stealthy Critters (78) Apr 15, 2018

Infrared Invisibility from Polar Bears, Secret Elephant Sounds and Tentacle Camouflage.

Superheavy Elements pt 2 (77) Apr 08, 2018

Before the Space Race there was a race to find and name new elements. Atom smashers and reactors were the tools to make new super-heavy metals - unknown on earth. Who leaked the announcement of two new radioactive elements on a Children's Quiz show ? Transfermium wars - What were they ? Who died getting Einsteinium ? Chemistry World journalist and author, Kit Chapman, tells Dr Karl about the people behind the unpronounceable names with big atomic numbers at the bottom of the table and the race that is still running.

Superheavy Elements pt 1 (76) Apr 01, 2018

Before the Space Race began there was a chemistry race - the hunt for new elements. The Russians may have organised the periodic table but it was the Americans that began filling in the blanks. These heavy elements could not be found in nature, you had to create them in cyclotrons and reactors. Chemistry World journalist and author, Kit Chapman, tells Dr Karl about the people behind the 20 or so unpronounceable names at the bottom of the table. In this podcast we count up from atomic number 93. Who wrote a personal letter to Stalin urging a soviet atomic program ? What was the Frankenstein-like moment in San Francisco (just before Pearl Harbour) that changed the war? Which superhero prompted the raid on the offices of DC Comics ?

Skinny Tea - Is it Real ? (75) Mar 25, 2018

Lose weight by drinking special Tea - that sounds easy... but is it good ? Dietetics professor Clare Collins, takes Dr Karl through seven Botanical tinctures that make this claim. Snake Oil or Science ?

http://theconversation.com/science-or-snake-oil-do-skinny-teas-boost-weight-loss-87353

https://www.newcastle.edu.au/online-learning/moocs/the-science-of-weight-loss

The Dark Side of the Universe with Prof James Green (74) Mar 18, 2018

The stars at night are only a fraction of what we know should be there. So where are all those missing bits from our universe? This is a lifelong quest for Professor James Green from Colorado University in Boulder. Since his student days, he has been designing payloads for NASA rockets (and the Hubble space telescope) looking at invisible stuff. So how do you see in the cold black soup of space? What is a Sounding Rocket? Why do Wimps beat Macho's ? These and many more questions are answered in Dr Karl's latest podcast.

BioHacking pt 2 (73) Mar 11, 2018

What would a biohacked future look like ? What would stop Supervillians creating seceret labs ? Who polices the Cyborgs ? What is the controversial 5th pillar of biohacking ? Doctor Karl and Australia's most famous biohacker discuss.

BioHacking pt 1 (72) Mar 04, 2018

Imagine visiting a doctor in the not too distant future. Afterwards she sends off data to a local gene lab to give your body a small upgrade. This is the world of biohacking. A place where biololgy is being controlled and shaped to our will - just like we have mastered computers. This episode bounces from In-Vivo to In-Silico and back again, visits the Last Universal Common Ancestor and involves a real human cyborg. Doctor Karl and Mr Meow Meow (Australia's most famous biohacker) explain this brave new world. Part One of a two part podcast.

The Source of Life, Fish and podcasts (71) Feb 25, 2018

Doctor Alice on Interstellar Chemistry. Doctor Karl answers the vital question "Do Fish Drink?". Dr Almost Jessica on where it is best to listen to podcasts. A Deep edition. The Shirtloads podcast Team back for 2018.

Balancing your Diet (70) Feb 18, 2018

Doctor Karl takes the Healthy Eating Quiz followed by a dietary checkup with Professor Claire Collins. Have you tried being Flexetarian ? 24 minutes of simple, healthy, free and inspiring suggestions. For maximum effect take the quiz before the podcast and compare your score with the Doctors. healthyeatingquiz.com.au

What is Real ? (69) Feb 11, 2018

From Floppy Hats, to Firebirds, The Dark Knight and the Broken Escalator Phenomenon. Doctor Karl is joined by Alice and Jessica as the explore the science behind three observed phenomena. The fire carrying birds of Northern Australia, the dark orbiter that will not die and why people brace themselves when there is no apparent danger.

Understanding Econobabble (68) Feb 04, 2018

Econobabble is an invented language that deliberately obscures what you think words describe. Words like "unemployment" and "subsidy" are simple at first glance. Wait till you find out what they really mean ! Are you wasting your time looking for certain jobs, investing your savings in the wrong place or voting against you best interests? Are your definitions up to date? 1962, William S. Burroughs suggested that language could be a virus in his book "The Ticket That Exploded". This 30 minute podcast might be the inoculation you've been looking for.

Note: Statistics and examples are for illustrative purposes only. Some are out of date and possibly wrong. The interview was recorded this in late 2017 before the Queensland state election.

Secret Astronomy - Tara Murphy and the explosive discoveries of 2017 (67) Jan 28, 2018

August 17 2017 will go down in in Astrophysics history . A LIGO event triggered a 50 telescope 24 hour 360 degree operation which yielded astronomy gold. Prof Tara Murphy was at ground zero when the results came in but she would have to be patient for the ripples to show up on Australian Radio Telescopes. In the data was the solution to a Cold war mystery. A compelling first hand account of a new frontier of discovery.

Euthenasia - Our moral and ethical dilemma (66) Jan 21, 2018

If every death was a good death, then euthenasia would be widespread. Today most countries ban it. Why? Professor Linda Shields has unearthed some of the reasons and they are within living memory. She is a Professor of Rural Health and has written of an under-reported genocide. One-third of a million disabled people (adults and children, male and female, physical and intellectual) were killed during the Nazi regime and the people who did that killing were nurses. Her book is Nurses and Midwives in Nazi Germany: The "Euthanasia Programs.

The Ins and Outs of the Ketogenic Diet (65) Jan 14, 2018

Dietitian, Care Collins gives Dr Karl a full 360 on a diet that is getting researchers pumped up. Imagine a menu that stimulated the blood brain barrier, made you think you were full early and might starve cancer cells. Sounds good but there are dangerous side effects in the long term. Ketogenic is a medical diet, is difficult to stick with and may actually have no long term weight loss benefits.

The Mulder and Sculley of Food (64) Jan 07, 2018

We are what we eat. Organic, low fat, pesticide-free, High Fibre ; Consumers pay extra for foods with health benefits like these. But when food is packaged, how do you know what is really inside ? Welcome to the world of Food Fraud. This Shirtloads podcast stars two British Scientists who have investigated and written about it in their book "Sorting the Beef from the Bull". Bio-Geo-Chemist Richard Evershead and Biologist Nicola Temple expose food criminals with forensic science. (first podcast in 2017)

Marine Biology Adventures (with Dr. Helen Scales) (63) Dec 31, 2017

Marine biologist, diver and author Dr Helen Scales takes Dr Karl deep beneath the waves to share her passion for the ocean. Helen talks about the secret life of molluscs (shellfish). Hear about ‘clacking’ oysters, the legend of the Golden Fleece (sea silk) and a creature resembling a pinecone crossbred with a slug. There’s maths in the spirals, slave trading in the cowrie and just imagine a Harry Potter golden snitch of the sea… it’s real and plays an incredibly important role.

It's Summer (in the southern hemisphere) What time should you Water your plants ? (62) Dec 24, 2017

Dr Karl and Dr Alice put their heads together to discuss the latest research into hairy leaves and burning plants? Dr Karl’s amazing fruit and veggie classification system. What do killer kangaroos have to do with sleeping in an unfamiliar bed? And, if you talk to dogs (like Dr Alice does) there’s an experiment you might just want to try. Listen up as two Doctors tackle these and more. (First Podcast in 2016)

The Return of the Worm in Medicine (61) Dec 17, 2017

Dr Michael has found some fascinating new applications and treatments using worms. From gut health, treating Coeliac disease and healing chronic wounds - there's relief to be found in our tubular friends. Join Dr Karl with Dr Michael Smout (from the Australian Institute of Tropical Health & Medicine) at James Cook University. If words like bile, kilodaltons and cysts put you off - stick with this - it's an uplifting tale of research that could make us feel a lot better.

Madagascar with Dr Karl (59) Dec 03, 2017

The people of Madagascar have fascinating stories. Did you know the first settlers came from South East Asia ? That some of their traditions are almost 2,000 years old ? That 90% of Madagascan flora and fauna are found nowhere else on earth. Dr Karl and local guide Lala Harivelo takes us on a cultural tour of the world's 4th largest island.

How to talk Science in 2017 - Masterclass with Bill Nye (58) Nov 26, 2017

Bill Nye is a household name in the United States. Former Engineer for Boeing, he has a real knack of explaining things. On the panel are Peter Lebedev (investigating how YouTube videos could be made better) and Tom Gordon from Sydney University (resident science communicator at the School of Physics). Clear and accurate communication is fundamental to Science. In 2017, how do you counter beliefs that are ultimately harmful to others and the world at large ? Fascinating discussion.

Women who measured the stars (57) Nov 19, 2017

Edwin Hubble is world famous for his discoveries. Henrietta Swan Leavitt is not. Henrietta was on a team that found a way to measure and classify the universe. They were employed as "human computers" (before the machines existed). Dava's book "The Glass Universe" refers to the half million glass slides Henrietta and other women used to document both the northern and southern skies. An inspiring story of collaboration and discovery.

Cyber Security Architecture - How does it keep us safe (56) Nov 12, 2017

How do you repel Cyber Espionage ? Architecture says Dr. Barry - The carefully designed structure of things like networks, software and the organisations around them. The latest wave of attacks is Ransom-ware. Dr Karl finds out how to avoid being held hostage. Dr Barry also gives Karl a bunch of tips for keeping your files secure at home and atwork. How often should you update your operating system software? Data backups - how many and where ? Wifi security, Script Kiddies and more.

Karl, The Universe & Everything - Book Preview (55) Nov 05, 2017

Jules Faber, Illustrator and Cartoonist, talks with Dr Karl about the creative process using "Karl, The Universe & Everything" as a case study. They talk the science of illustration - and the illustration of science. Why do some images speak louder ? Do cartoonists talk a primal language ? Jules is president of Australian Cartoonists' Association and Karl will also give you a preview of some of the hot stories in his latest book ""Karl, The Universe & Everything". Shameless self publicity ? You be the judge. Jules is a prominent Australian book illustrator, but this is his first adventure with Dr. Karl. His passion for science illustration stems from the late 90s when, while studying animation, Jules was leafing through one of Karl's earlier books. Thinking aloud that he could illustrate like the ones inside, and having never considered illustrating books before, this planted a seed. Years later, when asked to illustrate the first of the WeirDo series with Anh Do, Jules recalled that moment. Thus began a bucket-list ambition - to draw for Dr. Karl. The rest, as they say, is scientifically-accurate history.

Penetration Tester talks about being Naughty with Dr Karl (54) Oct 29, 2017

How do stock exchanges, nuclear power plants or the military check their computer security ? They hire penetration testers - Cyber security experts who secretly test both IT and organisational security. Dr Karl gets the low-down from Chris Gatford, director of a company called Hacklabs. You will not believe how some places make it easy to get inside.

Land on a Comet ? No worries says Aussie Engineer Warwick Holmes (53) Oct 22, 2017

We rarely get to hear "insider" stories of extraterrestrial discovery. Doctor Karl meets Warwick Holmes - Australian Avionics Systems Engineer on Rosetta. He worked on the Philae mission (the one that orbited the comet) seeking the chemical signatures of life. He gives us a blow by blow account of extraterrestrial exploration in the 21st Century. How do you test hardware to fly by the sun and withstand comet dust? How does a lad from South Australia land the best job on earth ? Beam us up Warwick ! First Podcast in 2016

Busting Gravity with Space Historian Amy Shira Teitel (52) Oct 15, 2017

Self-described ‘professional space history nerd’ Amy Shira Teitel and Dr Karl talk about spaceflight before NASA. Her book ‘Breaking the Chains of Gravity' covers cutting edge rocket planes like the X-15 (and its surprising link with tractor seats), the team of seamstresses making high-altitude balloons to send to the edge of space, and how paper plates inspired the engineering of early spacecraft. Extraordinary, intimate stories from a time almost lost from in space-age literature. First podcast in 2016.

Natalie Batalha pt 2 (51) Oct 08, 2017

From 2009 to 2013, the Kepler Space telescope looked for exoplanets. It stared unblinkingly at a patch of sky which Dr Batalha had selected hoping to find potential life supporting planets in the Goldilocks zone. Then something bad happened. Find out what can go wrong and how Dr Karl’s mind was blown to astronomical proportions.

Natalie Batalha pt 1 (50) Oct 01, 2017

From 2009 to 2013, the Kepler Space telescope looked for exoplanets – planets outside our solar system. It stared unblinkingly at a patch of sky which Dr Batalha had selected hoping to find not just exoplanets, but exoplanets in the Goldilocks zone. Find out what happened, what can go wrong and how Dr Karl’s mind was blown to astronomical proportions.

SOFIA Studying the Birth of Stars from a Flying Telescope (49) Sep 24, 2017

SOFIA is the Stratospheric Observatory for Infrared Astronomy.

Some German astronomers have made a one hundred inch telescope that picks up infrared. They bent it and shrunk it so that it fits into a NASA provided 747 Jumbo Jet. Dr Karl was lucky enough to be taken up for a ride. He spoke with Oliver Zeile about the engineering that keeps the telescope focused and on-target, and with Melanie Chavance who is studying the birth of stars in our nearest galaxy.

How We Got Into Science (48) Sep 17, 2017

Team Shirtload confesses all when they chat about how they got into science. Was it the nifty lab coats? Being able to use big words with authority? For Karl it has something to do with coathangers in the long grass. But for all it was about the beauty of the logic inherent in the scientific method. Great book recommendations as well.

The Fiery Death Plunge of Spacecraft Cassini (47) Sep 10, 2017

On the 15 September, 2017, after a long and happy life, the spacecraft Cassini will do (or did, depending on when you listen to this) a suicide plunge into the atmosphere of Saturn, the ringed planet.

This episode is a repeat, originally released in March 2017.

Dr Linda Spilker has been with NASA's Jet propulsion Lab since 1977. Her work spans Voyager missions and the current Cassini mission. With 40 years of exploration experience, enjoy our extended edition of Shirtloads. Also find out how Australia may play a vital role in decoding Saturn's rings. (Warning: Contains Physics, Chemistry, inter-planetary exploration and traces of Biology).

How good is Coffee ? Prof Clare Collins & Dr Karl (46) Sep 03, 2017

Of all hot beverages, Coffee may be the healthiest. It is loaded with antioxidants and beneficial nutrients and it may even lower the risk of some nasty diseases. Dietitician Prof Clare Collins & Dr Karl go through the mounting Scientific evidence. Importantly Professor Collins also goes through the risk factors for some and who should avoid it altogether. Shirtloads of Espresso Science this week.

Life on Titan, Space Agencies and Hangry (45) Aug 27, 2017

Dr Alice has a look at possible life but not as we know it on Titan. Close to but not quite, Dr Jessica on Australia's place the future shape of Space Agencies. And Dr Karl on how hungry can make you angry and irrational.

Dr Lucie & Dr Karl at 15 million degrees (44) Aug 20, 2017

Dr Lucie Green is a Solar Researcher. She studies our natural power source – that Great Nuclear Reactor in the Sky, the Sun.

Come along for the ride with me, Dr Karl, as Dr Lucie helps discover how fusion works, why the light we see is ancient (as old as we are), how to tell if there's an astronomer in your car, and the best place to view planet alignments and magellenic clouds. Shirtloads with Dr. Karl is Out Of This World - with added physics.

Science + Quiz = Comedy National Science Week 2017 (43) Aug 14, 2017

To celebrate National Science Week in Australia, we all got together under the umbrella of the Sydney Science Festival to have a fun night called SquizCo – in other words, Science Plus Quiz = Comedy.

We had two teams of top-notch scientists battling it out in an Arena of Knowledge and Wits under the watchful eye of host and fellow Sleek Geek Adam Spencer, with Dr Karl as the Brains Trust.

Why Great physics is Messy with Dr Helen Czerski (42) Aug 06, 2017

Dr Karl and Dr Helen - talking about ..World's longest echo, how to photograph the molecules inside an explosion, Oceans, Coffee rings and climate change.

Dr Helen Czerski describes Physics today as "messy" and "complex" and she loves it.

Spider Webs, The Shape of Eggs & On The Road with Bertha Benz (41) Jul 30, 2017

In this episode - just about, almost on-the-verge of becoming Doctor Jessica on the physics of chemical bonding in spider's silk and how it might help us to build better stuff. Dr Alice on computer modelling predicting the shape of eggs. Dr Karl tells us about the first road trip by car.

Ultra Marathon AstroPhysics with Professor Lisa (40) Jul 23, 2017

Making sense of the Heavens above is extreme science. Add radio telescopes and that becomes multi dimensional. Then apply stresses that destroy 4 wheel vehicles in the desert and you have this week's Shirtloads guest. Dr Karl and Professor Lisa (Harvey-Smith). Radio astronomer and Ultra Marathon Runner who quit formal schooling aged 11. Unique in the science fraternity and she is focused on big Science. In her own words "There are no Bigger questions than the ones being asked by astronomers. Where do we come from? Where are we going? Are we alone?"

Mice in Space, Battery & Plane Travel, Blue Pigment (39) Jul 16, 2017

This week the team are all in the wild blue yonder. Dr Alice talks about mice pups and space and burying sperm deep under the lunar surface. Dr Karl dreams of carbon free plane travel and passengers making space for the lightest element in the universe. And just about a fully formed Dr Jessica on making the newest blue a physical reality.

White Coffee & Meringues - Prof Claire Collins on the foamy Science of proteins (38) Jul 09, 2017

What makes white coffee so foamy and delicious. That delightful crunch when you bite into the perfect meringue. Scientifically they're both made of the same stuff - protein. Prof Claire Collins takes us on a journey beyond the taste buds to find the perfect foam for coffee and the prime meringuine making conditions. There is Science behind our recipes and with these tips you will do better. Dr Karl and Prof Collins are here to help.

Con Artists, Cold Spots and Stradivarius violins (37) Jul 02, 2017

Things are not always how they seem: Dr Karl explains how to be buff, good looking and scientifically believable in order to con the gullible. Almost Dr Jessica explains how a statistical quirk could look like a collision with another universe. And Dr Alice explains that how that wine you're drinking could taste better in another bottle while listening to your favourite violinist playing a Stradivarius that may or may not sound better than an ordinary violin.

Climate Science Debate (36) Jun 25, 2017

Why has Climate Science become so contested ? Dr Karl discusses with two authors. Dr Christopher Wright has written about the past 30 years of Climate Change in "Climate Change, Capitalism and Corporations: Processes of Creative Self-destruction". And Dr Michael Mann, the US researcher who published the hockey stick graph with his latest "The Madhouse Effect : How Climate Change Denial Is Threatening Our Planet, Destroying Our Politics, and Driving Us Crazy".

Dr. Michael Mann & the Hockey Stick Graph. (35) Jun 18, 2017

This podcast is about Science and a chart. Team leader, Professor Michael Mann, drew it 20 years ago using good science. It's been named "The Hockey Stick Graph" because of the way it shoots up. It had no new information. Instead it drew on an international scientific consensus.

The issue was that it suggested that humans had already changed our climate. The other problem was the clarity with which it expressed those man-made forces. You didn't need to be a scientist read or understand it. Dr Michael Mann, like Charles Darwin, dared to publish. The self-evident conclusion by many, unleashed powerful interests against both Dr. Mann and the science community. Dr Karl Talks with him about the experience.

The Artificial Uterus, Schroedinger's Cat & Bacteriophages (34) Jun 11, 2017

Blue Sky Science. This week the lamb in a bag - Dr Alice on the research that may help save premature babies. Almost Dr Jessica with a cat in a box wanted dead and/or alive. And Dr Karl on the viruses that eats bacteria - maybe there is a future for humans despite antibiotic superbugs.

Food Fraud Forensic Science (33) Jun 03, 2017

We are what we eat. Organic, low fat, pesticide-free, High Fibre ; Consumers are charged extra for foods with health benefits like these. But when food is packaged, how do you know what is really inside ? Welcome to the world of Food Fraud. This Shirtloads podcast stars two British Scientists who have written all it in "Sorting the Beef from the Bull". Bio-Geo-Chemist Richard Evershead and Biologist Nicola Temple. Dr Karl talking with the "Mulder and Sculley" of the food fraud forensic world.

Natural Nukes, Pulsars and Lithium-ion Batteries May 31, 2017

Natural Nukes - Dr Karl explains how the earth created a nuclear reactor billions of years before we figured out how. Extreme gravity, relativistic rotation speeds and could-have-been alien lighthouses - almost Dr Jessica explains the strange science of the Pulsar. Plus Dr Alice on things that shouldn't go boom - the Lithium-ion batteries that power all our devices.

Xiuhtezcatl Martinez - Climate Change Activist (31) May 21, 2017

From the age of six, Xiuhtezcatl has been out to improve our world. He worked locally to get pesticides out of parks, coal ash contained, and fracking moratoriums. He has addressed the General Assembly at the United Nations in New York. He is currently a plaintiff in a youth-led lawsuit against the US federal government for their failure to protect the atmosphere for future generations.

On a brief visit to Australia he talks with Dr. Karl on how to achieve meaningful change as a youth activist.

Ayahusca, Number Stations, Silk Stops Bullets (30) May 14, 2017

Dr Alice is talking about Ayahusca a South American hallucinogen that may help depression and other mental disorders, nearly Doctor Jessica exploring number stations and the secret messages that haven't stopped despite the end of the Cold War and Dr Karl on whether the silk handkerchief in your top pocket will stop bullets.

Marine Permaculture (Brian von Herzen) (29) May 07, 2017

Imagine cooling down 2,300 km of Barrier Reef along the Australian coast using renewable energy. Mind-blowing, right? Dr Brian Von Herzen has such a plan. It's part of a bigger picture that he calls Marine Permaculture - using nature to restore habitat in the oceans. It is a project he has been working towards for over a decade including demonstrations off Hawaii. Dr Karl discussed Dr Brian's vision in Queensland earlier this year. The audio quality varies as it was recorded on location.

Dinosaurs, Dinner & Descendants (#28) Apr 30, 2017

Dinosaur Love - What drove them to sex ? Dr. Alice reports that there may be hints in a distant relative. Test Tube Meat ? The cost of manufactured protein will come down says Almost Dr. Jessica. Plus Dr. Karl on Animal Families. They can have kids from different fathers in the same litter. They're not twins. What are they and Why?

SOS_26 Space Junk, FRB & a Fab new Forensic Tool Apr 16, 2017

Imagine laying a sheet of smart film on a masterpiece like "Starry Starry Night". Without contaminating the surface, you can lift off chemical signatures. Discover what paint Van Gogh used, what drugs he might have been taking and even if he was suffering from a recognisable disease. Dr Alice has the story plus Dr Karl on the growing rubbish dump above our heads and (almost) Dr Jessica on those one-off intergalactic tweets called FRBs - what are they ?

Swimming with Bacteria (and Dr Matt Baker) #27 Apr 12, 2017

Bacteria are more like submarines than fish. They have propellors and motors. This is one of the extraordinary discoveries that Sydney researcher Dr Matt Baker has been part of. In fact he has gone deeper and is looking inside the different motors bacteria species have. What powers these micro machines ? How they are made ? His stories of life at a micron level are almost beyond belief.

Gravitational Waves Part 2 (SoS_25) Mar 29, 2017

What discovery deserves to be the biggest of the 2016? We say Gravitational Waves and the LIGO team. Einstein said they were theoretically possible a hundred years ago and this story is so big it'll is worth two podcasts. Welcome once again Professor Geraint Lewis from the School of Physics at Sydney University.

What is so BIG that ... ? Mar 29, 2017

LIGO - Laser Interferometer Gravitational Wave Observatory was the detector. It has found the most elusive of all cosmic vibrations. One hundred years ago Einstein said they were possible - so mind-bending he changed his opinion twice. A mathematician in the WWI trenches confirmed their theoretical existence and then ... Well this story is so big it'll take two podcasts.

Welcome to our Shirtloads "Gravitational Wave Special Part One" and the Associate Head for Research at the School of Physics, Sydney University, Professor Geraint Lewis. Dark energy, gravitational lensing, galactic cannibalism - our Shirtloads of Science" guest eats them for breakfast.

SOS_23 Planets, Poison and Poverty Mar 18, 2017

Searching for other habitable planets, looking for medicines inside deadly poisons and pushing poverty (and wealth) to the limit. A Shirtloads Planet Earth 2017 health check.

Prof. Claire Collins - 5 Simple foods that might save your life Mar 16, 2017

Cholesterol is a waxy, fat-like substance that your body needs. When you have too much in your blood, it can build up on your artery walls. Too much cholesterol puts you at risk for heart disease and stroke, two leading causes of death. Prof. Claire Collins has 5 simple changes to your diet - that may improve your life and beat these notorious killers.

Science Talk on Birds, Planets & the Doomsday Clock (21) Mar 04, 2017

Doctors (Karl, Alice & Jessica almost) Talk about the Chemicals you may find on new Planets, a new way to breed endangered birds and why has the Doomsday Clock started ticking again ?

Dr. Linda Spilker knows lots about Saturn (you'd swear she's been there). Well she has - virtually. Mar 04, 2017

Dr Karl's Shirtloads takes you to where Water-Ice is rock, salty Geysers blow (just like earth's underwater Hydrothermic jets) and the prospects for life in our own Solar System are tantalisingly close. Dr Linda Spilker has been with NASA's Jet propulsion Lab since 1977. Her work spans Voyager missions and the current Cassini mission. With 40 years of exploration experience, enjoy our extended edition of Shirtloads. Also find out why you should put September 15th in your diary and how Australia may play a vital role in decoding Saturn's rings. (Warning: Contains Physics, Chemistry and traces of Biology).

Science Talk = Zealandia, Autism and the Soap we had to ban Feb 21, 2017

Planets are popping up everywhere but what about that new Continent on Earth - Why has it taken us so long to find it ? Which part of the human brain is revealing a relationship with Autism .... and why did we have to ban a certain type of soap ? Surely something as simple as soap can't be that bad ? Dr Karl, Dr Alice and Dr (almost) Jessica discuss the latest.

Ben Goldacre - Fact Checking Scientist Feb 15, 2017

"Fake News" was 2016's word of the year (according to the Macquarie Dictionary). Can "fake news" make you sick ? Doctor Karl meets a fact-checking scientist. Ben Goldacre reviews articles in medical Journals. Ben is "Senior Clinical Research Fellow" at the Center for Evidence-Based Medicine at Oxford University and he says there are reasons to be concerned. (His Dead cat is a professional member of the American Association of Nutritional Consultants - proof that fancy titles means nothing.)

Science Talk #17 - Tickles. The Moon and why our Clocks need leap seconds. Feb 13, 2017

Dr Alice talks about Tickling and why brain researchers are so interested in it - (did you know there are professional Rat Ticklers ?). Dr Jessica reports on the latest evidence of the origin of our moon. Doctor Karl on why we keep on adding leap seconds to our clocks - what is going on.

The "E" in STEM - Dr Karl & Dr Kanga talk Engineering Feb 04, 2017

Meet Dr. Marlene Kanga. She is about to become president of an international governing body looking after 2 million professionals. Our future depends on innovation and the creative heart is Engineering. She talks with Dr Karl of the value Engineers bring to society, which specialties are attracting female engineers and what Australia can do to catch up with some of the leading nations.

Science Talk - 2016 Highlights Jan 23, 2017

Karl, Alice and Jessica choose and discuss their top 4 Scientific discoveries of 2016. Astronomy, Biology, Computer Science, Physics and more. But there is one breakthrough they all agree on (and it has an Australian connection). Listen and find out.

Warwick Holmes - the Rosetta Mission's Aussie Avionics System Engineer Jan 21, 2017

We rarely get to hear "insider's" stories of extraterrestrial discovery. Doctor Karl meets Warwick Holmes - avionics systems engineer on the Rosetta mission that orbited comet seeking the chemical signatures of life. He gives us a blow by blow account of extraterrestrial exploration in the 21st Century. How do you test hardware to fly by the sun and withstand comet dust. How does a lad from South Australia land the best job on earth ? Beam us up Warwick !

Science Talk #13 Jan 13, 2017

Three Doctors (almost) - with Dr Karl's report on his expedition to see the Great Barrier Reef coral spawn . Dr Alice on why morning sickness may be good 4 U and how ear-worms work. Plus Dr Jessica (almost) on the physics of the ponytail.

Shirtloads of Science Ep 11 with Dr Alice Jan 03, 2017

Dr Alice reports on "open source pharma" for malaria, Dr Karl on space nation #3 - China. Dr Alice on Australian Budgerigars and the traffic control of drones. How Diet is the new highway to human development and is your brain tricking you into making bad choices ? 2017 New Year resolution advice from Shirtloads

Space Historian Dec 13, 2016

Self-described ‘professional space history nerd’ Amy Shira Teitel joins Dr Karl to talk about spaceflight before NASA in her book ‘Breaking the Chains of Gravity’. Hear about cutting edge rocket planes like the X-15 (and its surprising link with tractor seats), the team of seamstresses behind the launch of high-altitude balloons to the edge of space, and how paper plates inspired the engineering of early spacecraft. Tune in for extraordinary, intimate stories from a time that is often forgotten in space-age literature.

Science Talk Dec 12, 2016

Dr Alice has been shark hunting in the Arctic waters (i.e. through scientific papers) and discovered the oldest vertebrate in the world is at least 272 years old. Meanwhile, back on the land, why are two scientists riding a roller coaster holding a bag with an artificial kidney and stones? Dr Karl is considering a ‘fusion’ breakfast after hearing that spicy food may be good for your health. Fruit salad with chilli anyone? And why does the Zebra finch sing a different song to its eggs just before they hatch?

Marine Biology Adventures Dec 11, 2016

Marine biologist, diver and author Dr Helen Scales takes Dr Karl deep beneath the waves to share her passion for life in the ocean. Helen talks about her new book ‘Spirals in Time’ on the secret life of shells. Hear about ‘clacking’ oysters, the legend of the Golden Fleece (sea silk) and a creature resembling a pinecone crossbred with a slug. There’s mathematics in the spirals of shells, slave trading in the history of the cowrie shell and just imagine a Harry Potter golden snitch of the sea… it’s real and has an incredibly important role to play in ocean life.

Science talk : Movie releases of a chemical kind, exercise and coffee Dec 04, 2016

Dr Alice is back in the house for science chat and she’s got popcorn for Dr Karl! But wait, why? They are talking movies and the science behind knowing what’s going on in a film by measuring the chemicals released by the audience. Who knew there could be a link between ‘The Hunger Games’, the Amazon rainforest and being able to diagnose medical conditions? Find out what happened in the case of the ‘poisoned pants’ and what’s the best time to exercise to lose weight? They ask the big questions about coffee – good or bad – and, should you really have a hot cup of tea to cool you down?

Nutrition, Dietetics and Your Toilet Bowl Nov 27, 2016

Clare Collins is a Professor in Nutrition and Dietetics at the University of Newcastle. She joins Dr Karl for a colourful conversation about your toilet bowl and what it can tell you about your health. Don’t be shy, listen up and discover what weird colours you should not see, and what they could mean. Got green poo? There’s an explanation. How about ‘cappuccino’ wee or purple pee? You’ll be surprised. Find out when to see your GP and what to show and tell. Perhaps you’ll take away Dr Karl’s new mantra: ‘while the eyes are the window to your soul, the toilet bowl is a window to your health.

Science talk: Watering plants, the first night effect and talking to dogs Nov 20, 2016

Dr Karl and Dr Alice put their heads together to discuss the latest research into well… all sorts of stuff! What do hairy leaves have to do with burning plants? Is Dr Karl’s fruit and veggie classification (serve it with ice-cream it’s a fruit, with gravy it’s a vegetable) scientifically accurate? And what exactly do killer kangaroos have to do with being unable to sleep in an unfamiliar bed? Listen up as the Doctors tackle these questions and more. And, if you talk to dogs (like Dr Alice does) there’s an experiment you might just want to try.

The Quest for Longitude Nov 13, 2016

Maritime history’s greatest scientific breakthrough was working out longitude, the distance (measured in degrees, minutes, and seconds) of how far a point is, either East or West, of the Prime (Greenwich) Meridian. Dr Karl unravels this discovery with Kevin Sumption and James Hunter from the Australian National Maritime Museum in Sydney, as they talk about the history of navigation and their 2016 exhibition, Ships, Clocks and Stars: The Quest for Longitude. Hear about extraordinary nautical instruments, different methodologies for calculating longitude, and the impact of these inventions and explorations on the world today.

The Open Source Malaria Project Nov 06, 2016

Over 200 million people are infected with malaria every year. Dr Alice Williamson, research chemist, lecturer and science communicator at the University of Sydney talks to Dr Karl about her work with Open Source Malaria. This is a worldwide drug discovery project that shares all data and results (no patents please!) in an incredible collaborative effort to tackle the disease. Hear about the problems encountered, Alice’s work in the lab, the thrill of working together with high school and undergraduate students, and the problem researchers are hoping to have that will point towards a possible cure.

The Kepler Mission Scientist: Part 2 Oct 30, 2016

Part Two reveals what happened when one, and then two (!!) of the Kepler Spacecraft reaction wheels went to lunch, how the news almost drove Dr Karl to whiskey, and how the engineers found a brilliant solution and continued on with Kepler Mission 2. A jaw-dropping discussion about the discoveries made, including potentially habitable earth-sized planets, the inconstancy of stars, and the probability of finding evidence of life beyond planet Earth.

The Kepler Mission Scientist Oct 20, 2016

Dr Karl looks to the stars to kick off his new podcast with NASA Ames research astrophysicist Dr Natalie Batalha, the Kepler Mission Scientist. From 2009 to 2013, the Kepler Space telescope looked for exoplanets – planets outside our solar system. It stared unblinkingly at a patch of sky which Dr Batalha had selected hoping to find not just exoplanets, but exoplanets in the Goldilocks zone. Find out what happened, what can go wrong and how Dr Karl’s mind was blown to astronomical proportions.

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