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Updated: 1 hour 53 min ago

Stomach This

15 hours 53 min ago

Not all conversation is appropriate for the dinner table – and that includes, strangely enough, the subject of eating. Yet what happens during the time that food enters our mouth and its grand exit is a model of efficiency and adaptation.

Author Mary Roach takes us on a tour of the alimentary canal, while a researcher describes his invention of an artificial stomach. Plus, a psychologist on why we find certain foods and smells disgusting. And, you don’t eat them but they could wiggle their way within nonetheless: surgical snakebots.

Guests:

Descripción en español

De-Extinction Show

April 29, 2013

Maybe goodbye isn’t forever. Get ready to mingle with mammoths and gaze upon a ground sloth. Scientists want to give some animals a round-trip ticket back from oblivion. Learn how we might go from scraps of extinct DNA to creating live previously-extinct animals, and the man who claims it’s his mission to repopulate the skies with passenger pigeons.

But even if we have the tools to bring vanished animals back, should we?

Plus, the extinction of our own species: are we engineering the end of humans via our technology?

Guests:
  • Beth Shapiro – Associate professor of ecology and evolutionary biology, University of California, Santa Cruz
  • Ben Novak – Biologist, Revive and Restore project at the Long Now Foundation, visiting biologist at the University of California, Santa Cruz
  • Hank Greely – Lawyer working in bioethics, director of the Stanford Center for Law and the Biosciences at Stanford University
  • Melanie Challenger – Poet, writer, author of On Extinction: How We Became Estranged from Nature
  • Nick Bostrom – Director of the Future of Humanity Institute, Oxford University

Descripción en español

Deep Time

April 22, 2013

Think back, way back. Beyond last week or last year … to what was happening on Earth 100,000 years ago. Or 100 million years ago. It’s hard to fathom such enormous stretches of time, yet to understand the evolution of the cosmos – and our place in it – your mind needs to grasp the deep meaning of eons. Discover techniques for thinking in units of billions of years, and how the events that unfold over such intervals have left their mark on you.

Plus: the slow-churning processes that turned four-footed creatures into the largest marine animals that ever graced the planet and using a new telescope to travel in time to the birth of the galaxies.

Guests:

Descripción en español

Skeptic Check: Forget with the Program

April 15, 2013

ENCORE Just remember this: memory is like Swiss cheese. Even our recollection of dramatic events that seem to sear their images directly onto our brain turn out to be riddled with errors. Discover the reliability of these emotional “flashbulb” memories.

Also, a judge questions the utility of eyewitness testimony in court. And, don’t blame Google for destroying your powers of recall! Socrates thought the same thing about the written word.

Plus, Brains on Vacation!

Guests:

Descripción en español

First released May 7, 2012

Seth's Wine Cellar

April 08, 2013

There are always surprises when we sort through Seth’s wine cellar – who knows what we’ll find!

In this cramped cavern, tucked between boxes of old fuses and a priceless bottle of 1961 Chateau Palmer Margaux, we discover the next generation of atomic clock … the key to how solar storms disrupt your cell phone … nano-gold particles that could make gasoline obsolete … and what NASA’s Kepler spacecraft has learned about how our solar system stacks up to others.

Tune in, find out and, help us lift these boxes, will you?

Guests:
  • Chris Sorensen – Physicist, Kansas State University
  • Anne Curtis – Senior research scientist, National Physical Laboratory, U.K.
  • Jonathan Eisen – Evolutionary biologist, University of California, Davis
  • Karel Schrijver – Solar physicist, Lockheed Martin, Advanced Technology Center
  • Jonathan Fortney – Astronomer, University of California, Santa Cruz
  • Sanjoy Som – Astrobiologist, NASA Ames Research Center

Descripción en español

Anthropocene and Heard

April 01, 2013

ENCORE What’s in a name? “Holocene” defines the geologic epoch we’re in. Or were in? Goodbye to “Holocene” and hello “Anthropocene!” Yes, scientists may actually re-name our geologic era as the “Age of Man” due to the profound impact we’ve had on the planet.

We’ll examine why we’ve earned this new moniker and who votes on such a thing. Plus, discover the strongest evidence for human-caused climate change.

Also, why cities should be celebrated, not reviled… a musing over the possible fate of alien civilizations … and waste not: what an unearthed latrine – and its contents – reveal about ancient Roman habit and diet.

Guests:

Descripción en español

First released October 24, 2011

Skeptic Check: Friends Like These

March 25, 2013

We love our family and friends, but sometimes their ideas about how the world works seem a little wacky. We asked BiPiSci listeners to share examples of what they can’t believe their loved-ones believe, no matter how much they hear rational explanations to the contrary. Then we asked some scientists about those beliefs, to get their take.

Discover whether newspaper ink causes cancer … if King Tut really did add a curse to his sarcophagus … the efficacy of examining your irises – iridology – to diagnose disease … and more!

Oh, and what about string theory? Is it falsifiable?

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Time for a Map

March 18, 2013

It’s hard to get lost these days. GPS pinpoints your location to within a few feet. Discover how our need to get from A to B holds clues about what makes us human, and what we lose now that every digital map puts us at the center.

Plus, stories of animal navigation: how a cat found her way home across Florida, and the magnetic navigation systems used by salmon and sea turtles.

Also, why you’ll soon be riding in driverless cars. And, how to map our universe.

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Our Tasteless Show

March 11, 2013

Imagine biting into a rich chocolate donut and not tasting it. That’s what happened to one woman when she lost her sense of smell. Discover what scientists have learned about how the brain experiences flavor, and the evolutionary intertwining of odor and taste.

Plus a chef who tricks tongues into tasting something they’re not. It’s chemical camouflage that can make crabgrass taste like basil and turn bitter crops into delicious dishes – something that could improve nutrition world-wide.

Meanwhile, are we a tasty treat for aliens? Discover whether we might be attractive snacks for E.T. And, out-of-this-world recipes from a “gAstronomy” cookbook!

Guests:

Descripción en español

Happy Daze

March 04, 2013

ENCORE Calling all pessimists! Your brain is wired for optimism! Yes, deep down, we’re all Pollyannas. So wipe that scowl off your face and discover the evolutionary advantage of thinking positive. Also, enjoy other smile-inducing research suggesting that if you crave happiness, you should do the opposite of what your brain tells you to do.

Plus, why a “well-being index” may replace Dow Jones as a metric for success … a Twitter study that predicts your next good mood … and whether our furry and finned animal friends can experience joy.

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Descripción en español

First released October 17, 2011

Skeptic Check: About Face

February 25, 2013

Face it – humans are pattern-seeking animals. We identify eyes, nose and mouth where there are none. Martian rock takes on a visage and the silhouette of Elvis appears in our burrito. Discover the roots of our face-tracking tendency – pareidolia – and why it sometimes leads us astray.

Plus, why some brains can’t recognize faces at all … how computer programs exhibit their own pareidolia … and why it’s so difficult to replicate human vision in a machine

Guests:
  • Phil Plait – Astronomer, Skeptic, and author of Slate Magazine’s blog Bad Astronomy
  • Josef Parvisi – Associate professor, Stanford University, and clinical neurologist and epilepsy specialist at Stanford Medical Center
  • Nancy Kanwisher – Cognitive neuroscientist, at the McGovern Institute for Brain Research at MIT
  • Greg Borenstein – Artist, creative technologist who teaches at New York University
  • Pietro Perona – Professor of electrical engineering, computation and neural systems, California Institute of Technology

Whodunit, Who'll Do It?

February 18, 2013

ENCORE The tools of forensics have moved way beyond fingerprint kits. These days, a prosecutor is as likely to wave a fMRI brain scan as a smoking gun as “Exhibit A.” Discover what happens when neuroscience has its day in court.

Meanwhile, research into the gold standard of identification, DNA, marches on. One day we may determine a suspect’s eye color from a drop of blood.

Plus, why much of forensic science – from fingerprinting to the polygraph – is more like reading tea leaves than science. And will future crime victims be robots?

Guests:
  • Owen Jones – Professor of law, Professor of biological sciences at Vanderbilt University, in Nashville, Tennessee
  • Manfred Kayser – Forensic molecular biologist, Erasmus University Medical Centre, Rotterdam, The Netherlands
  • Marc Goodman – Founder, The Future Crimes Institute
  • David Faigman – Law professor, University of California, Hastings College of the Law in San Francisco

Descripción en español

First aired September 19, 2011

Say La Vie

February 11, 2013

Researchers have discovered life in a buried Antarctic lake. But we’re not surprised. Life is amazingly adaptive. Expose it to any environment – heat, ice, acid or even jet fuel – and thrives. But this discovery of life under the ice may have exciting implications for finding biology beyond Earth.

Scientists share their discovery, and how they drilled down through a half-mile of ice.

Also, plunge into another watery alien world with director James Cameron, and the first solo dive to the deepest, darkest part of the ocean.

Plus, a Nobel Prize-winning chemist tries to create life in his lab to learn more about biology’s origins, and martian fossils abound in Robert J. Sawyer’s latest sci-fi novel.

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Descripción en español

That's Containment!

February 04, 2013

We all crave power: to run laptops, charge cell phones, and play Angry Birds. But if generating energy is easy, storing it is not. Remember when your computer conked out during that cross-country flight? Why can’t someone build a better battery?

Discover why battery design is stuck in the 1800s, and why updating it is key to future green transportation (not to mention more juice for your smartphone). Also, how to build a new type of solar cell that can turn sunlight directly into fuel at the pump.

Plus, force fields, fat cells and other storage systems. And: Shock lobster! Energy from crustaceans?

Guests:
  • Dan Lankford – Former CEO of three battery technology companies, and a managing director at Wavepoint Ventures
  • Jackie Stephens – Biochemist at Louisiana State University
  • Kevin MacVittie – Graduate student of chemistry, Clarkson University, New York
  • Nate Lewis – Chemist, California Institute of Technology
  • Alex Filippenko – Astronomer, University of California, Berkeley

Skeptic Check: Science Blunders

January 28, 2013

We’ve all had an “oops” moment. Scientists are no exception. Sometimes science stumbles in the steady march of progress. Find out why cold fusion is a premier example why you shouldn’t hold a press conference before publishing your results. Also, how to separate fumbles from faux-science from fraud.

Plus, why ignorance is what really drives the scientific method.

And our Hollywood skeptic poses as a psychic for Dr. Phil, while our Dr. Phil (Plait) investigates the authenticity of a life-bearing meteorite.

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We Heart Robots

January 21, 2013

The machines are coming! Meet the prototypes of your future robot buddies and discover how you may come to love a hunk of hardware. From telerobots that are your mechanical avatars … to automated systems for the disabled … and artifical hands that can diffuse bombs.

Plus, the ethics of advanced robotics: should life-or-death decisions be automated?

And, a biologist uses robo-fish to understand evolution.

Guests:

Descripción en español