Episodes

Air Datesort ascending Title
Apr 25, 2016
Skeptic Check: Your Inner Lab Coat
Skeptic Check: Your Inner Lab Coat
Think like a scientist.
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ENCORE  Sherlock Holmes doesn’t have a science degree, yet he thinks rationally – like a scientist. You can too! Learn the secrets of being irritatingly logical from the most famous sleuth on Baker Street. Plus, discover why animal trackers 100,000 years ago may have been the first scientists, and what we can learn from about deductive reasoning from today’s African trackers.

Also, the author of a book on teaching physics to your dog provides tips for unleashing your inner scientist, even if you hated science in school.

Apr 18, 2016
Moving Right Along
Moving Right Along
The universe in motion.
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ENCORE  You think your life is fast-paced, but have you ever seen a bacterium swim across your countertop? You’d be surprised how fast they can move.

Find out why modeling the swirl of hurricanes takes a roomful of mathematicians and supercomputers, and how galaxies can move away from us faster than the speed of light.

Also, what happens when we try to stop the dance of atoms, cooling things down to the rock bottom temperature known as absolute zero.

Apr 11, 2016
Surfeit of the Vitalist
Surfeit of the Vitalest
The diversity of evolution.
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ENCORE  In the century and a half since Charles Darwin wrote his seminal On the Origin of the Species, our understanding of evolution has changed quite a bit. For one, we have not only identified the inheritance molecule DNA, but have determined its sequence in many animals and plants.

Evolution has evolved, and we take a look at some of the recent developments.

Apr 04, 2016
Tale of the Distribution
Tale of the Distribution
The influence of extreme events.
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ENCORE  We all have at least some musical talent. But very few of us can play the piano like Vladimir Horowitz. His talent was rarefied, and at the tail end of the bell curve of musical ability – that tiny sliver of the distribution where you find the true outliers. Outliers also exist with natural events: hurricane Katrina, for example, or the asteroid that wiped out the dinosaurs. Such events are rare, but they often have outsized effects.

Mar 28, 2016
Skeptic Check: How Low Can You Go?
Skeptic Check: How Low Can You Go?
Cryotherapies.
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Baby, it’s cold outside… but you still might want to be there.  Some people claim that chilly temperatures are good for your health, and proponents of cryotherapy suggest you have a blast – of sub-zero air – to stave off wrinkles and perhaps halt aging altogether. 

Meanwhile the field of cryonics offers the ultimate benefit by suggesting that you put future plans – and your body – on ice when you die.  That way you might be revived when the technology to do so is developed.

Mar 21, 2016
Gene-y in a Bottle
Gene-y in a Bottle
CRISPR technology
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You can’t pick your parents.  But soon you may be able to change the DNA they gave you.  CRISPR technology is poised to take DNA editing to new levels of precision and speed.  Imagine deleting genes from your body that you don’t like and inserting the ones you want.  The swap might not even require a fancy lab.  Biohackers are already tinkering with genes in their homes.  

Find out how CRISPR technology might change everything when the genetic lottery is no longer destiny. 

Mar 14, 2016
Who's Controlling Whom?
Who's Controlling Whom?
Microbes v. humans v. robots
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ENCORE  A single ant isn’t very brainy. But a group of ants can do remarkable things. Biological swarm behavior is one model for the next generation of tiny robots. Of course, biology can get hijacked: a fungus can seize control of an ant’s brain, for example. So will humans always remain the boss of super-smart, swarming machines?

We discuss the biology of zombie ants and how to build robots that self-assemble and work together. Also, how to guarantee the moral behavior of future ‘bots.

Mar 07, 2016
Land on the Run
Land on the Run
A moving story of plates.
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ENCORE Hang on to your globe. One day it’ll be a collector’s item. The arrangement of continents you see today is not what it once was, nor what it will be tomorrow. Thank plate tectonics.

Now evidence suggests that the crowding together of all major land masses into one supercontinent – Pangaea, as it’s called – is a phenomenon that’s happened over and over during Earth’s history. And it will happen again. Meet our future supercontinent home, Amasia, and learn what it will look like.

Feb 29, 2016
The Crater Good
The Crater Good
Back to the moon.
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It was “one giant leap for mankind,” but the next step forward may require going back.  Yes, back to the moon.  Only this time the hardware may come from China.  Or perhaps Europe.  In fact, it seems that the only developed nation not going lunar is the U.S.

Find out why our pockmarked satellite is such hot real estate, and whether it has the raw materials we’d need to colonize it.  A new theory of how the moon formed may tell us what’s below its dusty surface.

Feb 22, 2016
Eve of Disruption
Eve of Disruption
Past, future, and now.
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Only two of the following three creations have had lasting scientific or cultural impact:  The telescope … the Sistine Chapel ceiling … the electric banana.  Find out why one didn’t make the cut as a game-changer, and why certain eras and places produce a remarkable flowering of creativity (we’re looking at you, Athens).

Feb 15, 2016
With All Our Mites
With All Our Mites
What's bugging you.
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You are not alone.  You can’t see ‘em, but your face is a festival of face mites. They’ve   evolved with us for millennia.  And a new study finds that hundreds of different tiny spiders, beetles, and – our favorite - book lice make your home theirs.  But before you go bonkers with the disinfectant, consider: eradicating these critters may do more harm than good.  Some are such close evolutionary partners with humans that they keep us healthy and can even reveal something about our ancestry.

Feb 08, 2016
100% Invisible
100% Invisible
Cosmic wonders.
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In astronomy, the rule of thumb was simple: If you can’t see it with a telescope, it’s not real.  Seeing is believing.  Well, tell that to the astronomers who discovered dark energy, or dark matter … or, more recently, Planet 9.   And yet we have evidence that all these things exist (although skepticism about the ninth – or is it tenth? – planet still lingers).

Find out how we know what we know about the latest cosmic discoveries – even if we can’t see them directly.  The astronomer who found Planet 9 – and killed Pluto – offers his evidence. 

Feb 01, 2016
Skeptic Check: Glutenous Maximus
Diet trends.
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Eat dark chocolate.  Don’t drink coffee.  Go gluten-free.  If you ask people for diet advice, you’ll get a dozen different stories.  Ideas about what’s good for us sprout up faster than alfalfa plants (which are still healthy … we think).  How can you tell if the latest is fact or fad?

Jan 25, 2016
Replace What Ails You
Replace What Ails You
Breakthroughs in regeneration.
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ENCORE Germs can make us sick, but we didn’t know about these puny pathogens prior to the end of the 19th century. Just the suggestion that a tiny bug could spread disease made eyes roll. Then came germ theory, sterilization, and antibiotics. It was a revolution in medicine. Now we’re on the cusp of another one. This time we may cure what ails us by replacing what ails us.

Bioengineers use advancements in stem cell therapy to grow red and white cells for human blood. Meanwhile, a breakthrough in 3D printing: scientists print blood vessels and say that human organs may be next.

Jan 18, 2016
Winging It
Bats, birds, and flying cars.
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Ask anyone what extraordinary powers they’d love to have, and you’re sure to hear “be able to fly.”  We’ve kind of scratched that itch with airplanes.  But have we gone as far as we can go, or are better flying machines in our future?  And whatever happened to our collective dream of flying cars?   We look at the evolution - and the future - of flight.

Animals and insects have taught us a lot about the mechanics of becoming airborne.  But surprises remain.  For example, bats may flit around eccentrically, but they are actually more efficient fliers than birds.   

Jan 11, 2016
Apt to Adapt
Apt to Adapt
How nimble are we?
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ENCORE  If you move with the times, you might stick around long enough to pass on your genes. And that is adaptation and evolution, in a nutshell.

But humans are changing their environment faster than their genes can keep pace. This has led to a slew of diseases – from backache to diabetes – according to one evolutionary biologist. And our technology may not get us out of the climate mess we’ve created. So just how good are we at adapting to the world around us?

Jan 04, 2016
A Stellar Job
A Stellar Job
The science of star power.
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ENCORE  The stars are out tonight. And they do more than just twinkle. These boiling balls of hot plasma can tell us something about other celestial phenomena. They betray the hiding places of black holes, for one. But they can also fool us. Find out why one of the most intriguing discoveries in astrobiology - that of the potentially habitable exoplanet Gliese 581g - may have been just a mirage.

Plus, the highest levels of ultraviolet light ever mentioned on Earth’s surface puzzles scientists: is it a fluke of nature, or something manmade?

Dec 28, 2015
You Think; You're So Smart
You Think; You're So Smart
Brains not required.
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ENCORE  Sure you have a big brain; it's the hallmark of Homo sapiens. But that doesn't mean that you've cornered the market on intelligence. Admittedly, it's difficult to say, since the very definition of the term is elusive. Depending on what we mean by intelligence, a certain aquatic mammal is not as smart as we thought (hint: rhymes with "caulpin") … and your rhododendron may be a photosynthesizing Einstein.

And what I.Q. means for A.I. We may be building our brilliant successors.

Dec 21, 2015
Skeptic Check: Fear Itself
Skeptic Check: Fear Itself
The science of unease.
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Shhh.  Is someone coming? Okay, we’ll make this quick.  There are a lot of scary things going on in the world.  Naturally you’re fearful.  But sometimes fear has a sister emotion: suspicion.  A nagging worry about what’s really going on. You know, the stuff they aren’t telling you.  Don’t share this, but we have evidence that both our fear response and our tendency to believe conspiracy theories are evolutionarily adaptive.  

Dec 14, 2015
Look Who's Not Talking
Look Who's Not Talking
Technology takes over.
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We may be connected, but some say we’re not communicating.  The consequences could be dire.  A U.S. Army major says that social media are breaking up our “band of brothers,” and that soldiers who tweet rather than talk have less cohesion in combat.