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Naked Scientists, In Short Special Editions Podcast — Life Sciences
Naked Scientists, In Short Special Editions Podcast

Probing the weird, wacky and spectacular, the Naked Scientists Special Editions are special one-off scientific reports, investigations and interviews on cutting-edge topics by the Naked Scientists team.

Copyright: © The Naked Scientists

Latest Episodes:

Bacteria not slowed by obstacles May 24, 2019

Show notes

Researchers have gained new insights into how bacteria move in complex environments. Bacteria move using a system called "swim-and-tumble": they swim in a straight line for a bit, then tumble in a circle, which gives them a chance to correct their course. They can't see where they're going - they can't see at all - but they can sense and follow gradients of increasing concentration of food, like following a delicious smell into the kitchen. This type of movement is called chemotaxis, and it's been well studied in bacteria moving in a clear area. But in the real world, such as inside the human... Like this podcast? Please help us by supporting the Naked Scientists

Sensing air pollution May 24, 2019

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To better understand how personal exposure to air pollution can impact an individual's health, Katie Haylor met up with Cambridge University chemist Lia Chatzidiakou for a walk around central Cambridge. And to find out how air pollution can be monitored across a whole city, Katie climbed up to the roof of Cambridge University's chemistry department with Cambridge University chemist Lekan Popoola.... Like this podcast? Please help us by supporting the Naked Scientists

Hiroshima buildings found in beach sand May 20, 2019

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Geologists from the University of California, Berkeley, found something unexpected in sand samples from Japan. Rather than natural particles, from rocks or plants, these tiny blobs of glass seem to have been formed in an atomic blast, and they might mean that the destroyed buildings of Hiroshima have been hiding in plain sight ever since. Ruby Osborn spoke to Mario Wannier about his research, which has been published in the journal Anthropocene. Like this podcast? Please help us by supporting the Naked Scientists

Reducing harassment online May 15, 2019

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Harassment in online communities is not a new phenomenon, but it is a growing one, with 40-46% of people reportedly having experienced it. Communities like reddit, one of the world's largest discussion forums, often have moderation teams responsible applying self-imposed rules which govern acceptable behaviour. These rules are not always well presented, or well adhered to. Researchers from Princeton University have collaborated with the moderation team at the reddit science discussion community "r/science", to determine how the clear presentation of the expected standards, or social norms... Like this podcast? Please help us by supporting the Naked Scientists

Mystery of the miniature T-Rex May 14, 2019

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Everyone's heard of T-Rexes, the twenty-foot-tall monsters that roamed the Earth back in the Late Cretaceous Period. But you may not have heard of their miniature cousin. It's a six foot tall dinosaur called Suskityrannus hazelae, and it gives us a clue about when and how T-Rexes got as big as they did. Sterling Nesbitt is the paleontologist who found the second and most complete fossil of this new dinosaur, but it took him twenty years to put this paper together. Phil Sansom asked him how. Like this podcast? Please help us by supporting the Naked Scientists

Biodegradable bags might not biodegrade May 10, 2019

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Our society uses - and then throws away - a vast amount of plastic, which then accumulates in the environment. To combat this, in recent years, new types of plastic bags have become available, labelled as "compostable" or "biodegradable."Both of these terms indicate the bag can break down and so avoid pollution, although biodegradable bags take longer than compostable bags. There's also a third type, oxo-biodegradable, which have an additive that should make them decompose a bit faster than standard biodegradable bags.So when you see a plastic bag labelled "biodegradable," how long do you... Like this podcast? Please help us by supporting the Naked Scientists

Caster Semenya and testosterone limits May 10, 2019

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Caster Semenya, a South African athlete with unusually high testosterone for a woman, has lost her appeal against new regulations from the International Association of Athletics Federations. The regulations set an upper limit on how much testosterone a female athlete is allowed to have compete in middle distance running, and require any woman over this limit to artificially lower her testosterone if she wants to continue competing. Ruby Osborn discussed the story. Like this podcast? Please help us by supporting the Naked Scientists

DNA unveils origins of farming in Britain May 03, 2019

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Before Britain was a nation of shopkeepers we were a nation of farmers; before that, the population were a bunch of hunter gatherers. But farming didn't catch on here until 1000 years after it had in Europe. Why was always a mystery, but now DNA technology is shedding new light on how this could have happened. Ben McAllister has been looking into the story... Like this podcast? Please help us by supporting the Naked Scientists

Premature labour: understanding the mechanics May 02, 2019

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Human babies grow inside their mothers for 40 weeks enclosed in a watery bag that expands as they do. And as the clock ticks during pregnancy, various processes kick in to thin the membrane material that surrounds the baby so that the bag ruptures at the right time to promote labour. But in some cases this happens far too early and can trigger a pre-term birth, and now scientists at Queen Mary University of London have discovered why. And if we know how it works, we might be in a position to discover how to stop it, as Tina Chowdhury explains... Like this podcast? Please help us by supporting the Naked Scientists

AI predicting battery performance Apr 18, 2019

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Batteries are in almost everything we use. Our phones, computers, energy storage, even in transport. Typically, to see how well a battery performs, scientists have to charge and discharge them over and over until, ultimately, the battery stops working. This can take years of development and testing, plus it's an expensive process. Now researchers from MIT and Stanford University in America have turned to AI to help. Izzie Clarke spoke to William Chueh who explained how AI has stepped in Like this podcast? Please help us by supporting the Naked Scientists

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