Big Picture Science

Latest Episodes:

Creature Discomforts Jun 03, 2019

Show notes

(repeat) Okay you animals, line up: stoned sloths, playful pandas, baleful bovines, and vile vultures. We’ve got you guys pegged, thanks to central casting.

Or do we? Our often simplistic view of animals ignores their remarkable adaptive abilities. Stumbly sloths are in fact remarkably agile and a vulture’s tricks for thermoregulation can’t be found in an outdoors store.

Our ignorance about some animals can even lead to their suffering and to seemingly intractable problems. The South American nutria was brought to Louisiana to supply the fur market. But the species got loose and tens of millions of these rodents are destroying the environment. It literally has a bounty on its tail.

Hear about research that corrects a menagerie of misunderstandings about our fellow furry, feathered, and scaly animals, and how getting over ourselves to know them better can have practical benefits. Will you still recoil from termites if you learn that they are relevant to the future of robots, global warming, and smart design?

Guests:

Lucy Cooke – Zoologist, broadcaster and author of “The Truth About Animals: Stoned Sloths, Lovelorn Hippos, and Other Tales from the Wild Side of Wildlife”
Chris Metzler – Co-director and producer of the film Rodents of Unusual Size
Lisa Margonelli – Journalist and author of "Underbug: An Obsessive Tale of Termites and Technology"

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Skeptic Check: Worrier Mentality May 27, 2019

Show notes

Poisonous snakes, lightning strikes, a rogue rock from space. There are plenty of scary things to fret about, but are we burning adrenaline on the right ones? Stepping into the bathtub is more dangerous than flying from a statistical point of view, but no one signs up for “fear of showering” classes.

Find out why we get tripped up by statistics, worry about the wrong things, and how the “intelligence trap” not only leads smart people to make dumb mistakes, but actually causes them to make more.

Guests:

Eric Chudler – Research association professor, department of bioengineering, University of Washington, Seattle and co-author of “Worried: Science Investigates Some of Life’s Common Concerns”
Lise Johnson – Director of the Basic Science Curriculum, Rocky Vista University, and co-author of “Worried: Science Investigates Some of Life’s Common Concerns”
Willie Turner – Vice President of Operations at the Hiller Aviation Museum in San Carlos, CA
Charles Wheelan – Senior Lecturer and Policy Fellow, Dartmouth College, and author of “Naked Statistics”
David Robson – Commissioning Editor for the BBC and author of “The Intelligence Trap: Why Smart People Make Dumb Mistakes”

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New Water Worlds May 20, 2019

Show notes

(repeat) The seas are rising. It’s no longer a rarity to see kayakers paddling through downtown Miami. By century’s end, the oceans could be anywhere from 2 to 6 feet higher, threatening millions of people and property. But humans once knew how to adapt to rising waters. As high water threatens to drown our cities, can we learn do it again.

Hear stories of threatened land: submerged Florida suburbs, the original sunken city (Venice), and the U.S. East Coast, where anthropologists rush to catalogue thousands of low-lying historical and cultural sites in harm’s way, including Jamestown, Virginia and ancient Native American sites.

But also, stories of ancient adaptability: from the First American tribes of the Colusa in South Florida to the ice age inhabitants of Doggerland. And, modern approaches to staying dry: stilt houses, seawalls, and floating cities.

Guests:

Jeff Goodell– Journalist and author of “The Water Will Come: Rising Seas, Sinking Cities, and the Remaking of the Civilized World”
Brian Fagan– Archaeologist and Emeritus Professor of Anthropology, University of California Santa Barbara, and author of many books including “The Attacking Ocean: the Past, Present, and Future of Rising Sea Levels”
David Anderson– Professor of Anthropology, University of Tennessee. His team’s PLOS ONE paper is “Sea-level rise and archaeological site destruction.” His DINAA site can be used to generate maps of where people were living in the past, up to ca. 15,000 years ago.

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Is Life Inevitable? May 13, 2019

Show notes

A new theory about life’s origins updates Darwin’s warm little pond. Scientists say they’ve created the building blocks of biology in steaming hot springs. Meanwhile, we visit a NASA lab where scientists simulate deep-sea vent chemistry to produce the type of environment that might spawn life. Which site is best suited for producing biology from chemistry?

Find out how the conditions of the early Earth were different from today, how meteors seeded Earth with organics, and a provocative idea that life arose as an inevitable consequence of matter shape-shifting to dissipate heat. Could physics be the driving force behind life’s emergence?

Guests:

Caleb Scharf – Director of Astrobiology at Columbia University, New York
Laurie Barge– Research scientist in astrobiology at NASA’s Jet Propulsion Laboratory
Bruce Damer – Research scientist in biomolecular engineering, University of California,
Jeremy England – Physicist, Massachusetts Institute of Technology

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Rethinking Chernobyl May 06, 2019

Show notes

The catastrophic explosion at the Chernobyl nuclear power plant in April 1986 triggered the full-scale destruction of the reactor. But now researchers with access to once-classified Soviet documents are challenging the official version of what happened both before and after the explosion. They say that the accident was worse than we thought and that a number of factors – from paranoia to poor engineering – made the mishap inevitable. Others claim a much larger death toll from extended exposure to low levels of radiation. But with nuclear energy being a possibly essential component of dealing with rising carbon dioxide emissions, how do we evaluate risk under the long shadow of Chernobyl?

Guests:

Adam Higginbotham – Author of “Midnight in Chernobyl: The Untold Story of the World’s Greatest Nuclear Disaster”
Kate Brown– Historian of Environmental and Nuclear History at the Massachusetts Institute of Technology and author of “Manual for Survival: A Chernobyl Guide for the Future”
James Smith – Professor in the School of Earth & Environmental Sciences, University of Portsmouth, U.K. He was interviewed for and has written a review of "Manual for Survival"
Ted Nordhaus – Founder and Executive Director of The Breakthrough Institute, Berkeley, California

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Identity Crisis Apr 29, 2019

Show notes

(repeat) DNA is the gold standard of identification. Except when it’s not. In rare cases when a person has two complete sets of DNA, that person’s identity may be up in the air. Meanwhile, DNA ancestry tests are proving frustratingly vague: dishing up generalities about where you came from rather than anything specific. And decoding a genome is still relatively expensive and time-consuming. So, while we refine our ability to work with DNA, the search is on for a quick and easy biomarker test to tell us who we are.

In this hour: the story of chimeras – people who have two sets of DNA; a reporter whose ancestry tests revealed she is related to Napoleon and Marie Antoinette; and the eyes have it in Somaliland, the first nation to use iris scans in an election. Find out why your irises may be what ultimately distinguishes you from the crowd.

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Gained in Translation Apr 22, 2019

Show notes

Your virtual assistant is not without a sense of humor. Its repertoire includes the classic story involving a chicken and a road. But will Alexa laugh at your jokes? Will she groan at your puns?

Telling jokes is one thing. Teaching a computer to recognize humor is another, because a clear definition of humor is lacking. But doing so is a step toward making more natural interactions with A.I.

Find out what’s involved in tickling A.I.’s funny bone. Also, an interstellar communication challenge: Despite debate about the wisdom of transmitting messages to space, one group sends radio signals to E.T. anyway. Find out how they crafted a non-verbal message and what it contained.

Plus, why using nuanced language to connive and scheme ultimately turned us into a more peaceful species. And yes, it’s all gouda: why melted cheese may be the cosmic message of peace we need.

Guests:

Julia Rayz – Computer scientist and associate professor at Purdue University’s Department of Computer and Information Technology
Steve Adler – Mayor of Austin, Texas
Doug Vakoch – Psychologist and president of the non-profit organization METI International
Richard Wrangham– Biological anthropologist at Harvard University and author of “The Goodness Paradox: The Strange Relationship Between Virtue and Violence in Human Evolution”

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Free Range Dinosaurs Apr 15, 2019

Show notes

(repeat) Dinosaurs are once again stomping and snorting their way across the screen of your local movie theater. But these beefy beasts stole the show long before CGI brought them back in the Jurassic Park blockbusters. Dinosaurs had global dominance for the better part of 165 million years. Compare that with a measly 56 million years of primate activity. We bow to our evolutionary overlords in this episode.

Our conversation about these thunderous lizards roams freely as we talk with the paleontologist who discovered Dreadnoughtus – the largest land lizard unearthed to date. Kenneth Lacovara asks that we please stop using the term “dinosaur” to refer to something outmoded, when in fact the dinos were among the most well-adapted, long-lived creatures ever.

Plus, intriguing dino facts: if you like eating chicken, you like eating dinosaurs, and how T-Rex’s puny arms helped him survive.

Also, with dozens of new species unearthed every year – nearly one a week – why we’ve entered the golden age of dinosaur discovery.

Guest:

Kenneth Lacovara– Paleontologist who unearthed the largest land dinosaur known: Dreadnoughtus. He is also founding dean of the School of Earth and Environment at Rowan University, director of the Jean and Ric Edelman Fossil Park, and author of “Why Dinosaurs Matter.”

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DecodeHer Apr 01, 2019

Show notes

DecodeHer

They were pioneers in their fields, yet their names are scarcely known – because they didn’t have a Y chromosome. We examine the accomplishments of two women who pioneered code breaking and astronomy during the early years of the twentieth century and did so in the face of social opprobrium and a frequently hostile work environment.

Henrietta Leavitt measured the brightnesses of thousands of stars and discovered a way to gauge the distances to galaxies, a development that soon led to the concept of the Big Bang.

Elizabeth Friedman, originally hired to test whether William Shakespeare really wrote his plays, was soon establishing the science of code breaking, essential to success in the two world wars.

Also, the tech industry is overwhelmingly male. Girls Who Code is an initiative to redress the balance by introducing girls to computer programming, and encouraging them to follow careers in tech.

Guests:

Jason Fagone – Author of “The Woman Who Smashed Codes: A True Story of Love, Spies, and the Unlikely Heroine Who Outwitted America’s Enemies”
Lauren Gunderson – Playwright of Silent Sky, which is being performed all over the world, form the First Folio Theatre to the Repertory Philippines
Reshma Saujani – Founder and CEO of Girls Who Code, and the author of "Brave, Not Perfect: Fear Less, Fail More, and Live Bolder”

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You Are Exposed Mar 25, 2019

Show notes

(repeat) There’s no place like “ome.” Your microbiome is highly influential in determining your health. But it’s not the only “ome” doing so. Your exposome – environmental exposure over a lifetime – also plays a role.

Hear how scientists hope to calculate your entire exposome, from food to air pollution to water contamination.

Plus, new research on the role that microbes play in the development of neurological diseases such as Parkinson’s, and the hot debate about when microbes first colonize the body. Could a fetus have its own microbiome?

Also, choose your friends wisely: studies of microbe-swapping gazelles reveal the benefits – and the downsides – of being social.

And, why sensors on future toilets will let you do microbiome analysis with every flush.

Guests:

Rob Knight – Professor of Pediatrics, Computer Science and Engineering, and Director of the Center for Microbiome Innovation at the University of California, San Diego

Vanessa Ezenwa – Ecologist at the University of Georgia

Indira Mysorekar – Microbiologist at Washington University in St. Louis, Missouri

Gary Miller – Professor of public health at the Rollins School of Public Health and director of the HERCULES Exposome Research Center at Emory University. After August 2018, his lab will be at Columbia University.

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