Air Datesort ascending Title
Feb 01, 2015
Digging Our Past
Unearthing history.
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ENCORE What’s past is prologue. For centuries, researchers have studied buried evidence – bones, teeth, or artifacts – to learn about murky human history, or even to investigate vanished species. But today’s hi-tech forensics allow us to analyze samples dug from the ground faster and at a far more sophisticated level.

First, the discovery of an unknown species of dinosaur that changes our understanding of the bizarre beasts that once roamed North America.

Jan 25, 2015
Skeptic Check: Mummy Dearest
Secrets unraveled.
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ENCORE Shh …mummy’s the word! We don’t want to provoke the curse of King Tut. Except that there are many curses associated with this fossilized pharaoh – from evil spirits to alien malevolence. So it’s hard to know which one we’d face.

We’ll unravel secrets about the famous young pharaoh, including the bizarre events that transpired after the discovery of his tomb in the Valley of the Kings, and learn what modern imaging reveals about life 3,000 years ago.

Jan 18, 2015
Big Questions Somewhat Answered
Cosmic conundrums.
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Here are questions that give a cosmologist – and maybe even you – insomnia: What happened after the Big Bang? What is dark matter? Will dark energy tear the universe apart?

Let us help you catch those zzzzs. We’re going to provide answers to the biggest cosmic puzzlers of our time. Somewhat. Each question is the focus of new experiments that are either underway or in the queue.

Jan 04, 2015
Meet Your Replacements
You, but better.
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ENCORE There’s no one like you. At least, not yet. But in some visions of the future, androids can do just about everything, computers will hook directly into your brain, and genetic human-hybrids with exotic traits will be walking the streets. So could humans become an endangered species?

Be prepared to meet the new-and-improved you. But how much human would actually remain in the humanoids of the future?

Plus, tips for preventing our own extinction in the face of inevitable natural catastrophes.

Dec 28, 2014
Skeptic Check: Got a Sweet Truth?
Is sugar toxic?
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ENCORE The sweet stuff is getting sour press. Some researchers say sugar is toxic. A new study seems to support that idea: mice fed the human equivalent of an extra three sodas a day become infertile or die. But should cupcakes be regulated like alcohol?

Hear both sides of the debate. Another researcher says that animal studies are misleading, and that for good health, you should count calories, not candy and carbs.

Plus, an investigative reporter exposes the tricks that giant food companies employ to keep you hooked on sugar, salt, and fat.

Nov 30, 2014
Long Live Longevity
The science of sticking around.
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ENCORE Here's to a long life - which, on average, is longer today than it was a century ago. How much farther can we extend that ultimate finish line? Scientists are in hot pursuit of the secret to longer life.

The latest in aging studies and why there's a silver lining for the silver-haired set: older people are happier. Also, what longevity means if you're a tree. Plus, why civilizations need to stick around if we're to make contact with E.T.

And, how our perception of time shifts as we age, and other tricks that clocks play on the mind.

Nov 23, 2014
This Land Is Island
We are not alone
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ENCORE There are many kinds of islands. There’s your iconic sandy speck of land topped with a palm tree, but there’s also our home planet – an island in the vast seas of space. You might think of yourself as a biological island … until you tally the number of microbes living outside – and inside – your body.

Nov 02, 2014
Sounds Abound
Noisy-ing around
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ENCORE The world is a noisy place. But now we have a better idea what the fuss is about. Not only can we record sound, but our computers allow us to analyze it.

Bird sonograms reveal that our feathery friends give each other nicknames and share details about their emotional state. Meanwhile, hydrophones capture the sounds of dying icebergs, and let scientists separate natural sound from man-made in the briny deep.

Oct 26, 2014
Skeptic Check: Friends Like These
Eyebrow-raising beliefs.
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ENCORE 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!

Oct 05, 2014
What's the Difference?
Us v. Them.
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We make split second decisions about others – someone is male or female, black or white, us or them. But sometimes the degrees of separation are incredibly few. A mere handful of genes determine skin color, for example.

Find out why race is almost non-existent from a biological perspective, and how the snippet of DNA that is the Y chromosome came to separate male from female.

Plus, why we’re wired to categorize. And, a groundbreaking court case proposes to erase the dividing line between species: lawyers argue to grant personhood status to our chimpanzee cousins.

Sep 21, 2014
As You Were
The arrow of time in reverse.
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ENCORE We all want to turn back time. But until we build a time machine, we’ll have to rely on a few creative approaches to capturing things as they were – and preserving them for posterity. One is upping memory storage capacity itself. Discover just how much of the past we can cram into our future archives, and whether going digital has made it all vulnerable to erasure.

Sep 14, 2014
Skeptic Check: Is It True?
Plausible scientific claims.
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We often hear fantastic scientific claims that would change everything if true. Such as the report that algae is growing on the outside of the International Space Station or that engineers have built a rocket that requires no propellant to accelerate. We examine news stories that seem too sensational to be valid, yet just might be - including whether a killer asteroid has Earth’s name on it.

Sep 07, 2014
A Sudden Change in Planets
From 9 to 900
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A planet is a planet is a planet. Unless it’s Pluto - then it’s a dwarf planet. But even then it’s a planet, according to experts. So what was behind the unpopular re-classification of Pluto by astronomers, and were they justified?

As the New Horizons spacecraft closes in on this small body, one planetary scientist says that this dwarf planet could be more typical of planets than Mars, Mercury, and Saturn. And that our solar system has not 8 or even 9 planets, but 900.

Aug 31, 2014
Welcome to Our Labor-atory
The end of work?
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ENCORE Hi ho, hi ho ... it’s out with work we go! As you relax this holiday weekend, step into our labor-atory and imagine a world with no work allowed. Soft robots help us with tasks at home and at the office, while driverless cars allow us to catch ZZZZs in the front seat.

Plus, the Internet of Everything interconnects all your devices, from your toaster to your roaster to … you. So there’s no need to ever get off the couch. But is a machine-ruled world a true utopia?

And, the invention that got us into our 24/7 rat race: Edison’s electric light.

Aug 24, 2014
ZZZZZs Please
Why we snooze.
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ENCORE We’ve all hit the snooze button when the alarm goes off, but why do we crave sleep in the first place? We explore the evolutionary origins of sleep … the study of narcolepsy in dogs … and could novel drugs and technologies cut down on our need for those zzzzs.

Plus, ditch your dream journal: a brain scanner may let you record – and play back – your dreams.

And, branch out with the latest development in artificial light: bioluminescent trees. How gene tinkering may make your houseplants both grow and glow.

Aug 10, 2014
De-Extinction Show
The return of vanished species.
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ENCORE 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?

Aug 03, 2014
Eye Spy
Who’s watching you?
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Who’s watching you? Could be anyone, really. Social media sites, webcams, CCTV cameras and smartphones have made keeping tabs on you as easy as tapping “refresh” on a tablet. And who knows what your cell phone records are telling the NSA?

Surveillance technology has privacy on the run, as we navigate between big data benefits and Big Brother intrusion.

Find out why wearing Google Glass could make everything you see the property of its creator, and which Orwellian technologies are with us today. But just how worried should we be? A cyber security expert weighs in.

Jul 13, 2014
Skeptic Check: About Face
The face on Mars and other pareidolia.
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ENCORE 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

Jul 06, 2014
Deep Time
Think back, way back...
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ENCORE 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.

Jun 29, 2014
Time for a Map
Space atlas and animal navigation.
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ENCORE 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.