Episodes

Air Datesort ascending Title
Jul 27, 2015
Skeptic Check: Are You Sure You're Sure?
Skeptic Check: Are You Sure You're Sure?
Our ignorance about our own ignorance.
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ENCORE  Nuclear fission powers the Sun. Or is it fusion? At any rate, helium is burned in the process, of that you are certain. After all, you read that article on astronomy last week*.

You know what you know. But you probably don’t know what you don’t know. Few of us do. Scientists say we’re spectacularly incompetent at recognizing our own incompetency, and that sometimes leads to trouble.

Jul 20, 2015
Moral's Law
Moral's Law
Are we becoming better behaved?
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“If it bleeds, it leads” is the tried and true tenet of news.  Indeed, headlines are often no more than a long list of moral atrocities.  Yet one man argues that we’re living in the most civilized era in history.  And he credits this to scientific thought and reason.  

Hang on!  Our executive function isn’t enough to promote ethical behavior, says a psychologist.  The real fuel behind our drive to be good?  Anger, compassion, pride: your emotions!

Jul 13, 2015
Forget to Remember
Forget to Remember
Digital and biological storage.
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ENCORE  You must not remember this. Indeed, it may be key to having a healthy brain. Our gray matter evolved to forget things; otherwise we’d have the images of every face we saw on the subway rattling around our head all day long. Yet we’re building computers with the capacity to remember everything. Everything! And we might one day hook these devices to our brains.

Jul 06, 2015
New Horizons spacecraft
Dogged Pursuit of Pluto
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Pluto is ready for its close up – but the near encounter during this historic flyby will last less than three minutes. Be ready for the action with our special New Horizons episode!

Jun 28, 2015
What the Hack
Are you protected?
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ENCORE A computer virus that bombards you with pop-up ads is one thing. A computer virus that shuts down a city’s electric grid is another. Welcome to the new generation of cybercrime. Discover what it will take to protect our power, communication and transportation systems as scientists try to stay ahead of hackers in an ever-escalating game of cat and mouse.

Jun 21, 2015
Skeptic Check: Evolutionary Arms Race
Shape-shifting bacteria and viruses
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ENCORE It's hard to imagine the twists and turns of evolution that gave rise to Homo Sapiens. After all, it required geologic time, and the existence of many long-gone species that were once close relatives. That may be one reason why – according to a recent poll – one-third of all Americans reject the theory of evolution. They prefer to believe that humans and other living organisms have existed in their current form since the beginning of time.

Jun 14, 2015
It's All Relative
How Einstein changed our understanding of Nature.
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A century ago, Albert Einstein rewrote our understanding of physics with his Theory of General Relativity. Our intuitive ideas about space, time, mass, and gravity turned out to be wrong.

Find out how this masterwork changed our understanding of how the universe works and why you can thank Einstein whenever you turn on your GPS.

Also, high-profile experiments looking for gravitational waves and for black holes will put the theories of the German genius to the test – will they pass?

Jun 07, 2015
And To Space We Return
From stardust to colonies.
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Earth may be the cradle of life, but our bodies are filled with materials cooked up billions of years ago in the scorching centers of stars. As Carl Sagan said, “We are all stardust.” We came from space, and some say it is to space we will return.

Discover an astronomer’s quest to track down remains of these ancient chemical kitchens. Plus, a scientist who says that it’s in our DNA to explore – and not just the nearby worlds of the solar system, but perhaps far beyond.

May 31, 2015
Math's Days Are Numbered
Life without Algebra
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ENCORE Imagine a world without algebra. We can hear the sound of school children applauding. What practical use are parametric equations and polynomials, anyway? Even some scholars argue that algebra is the Latin of today, and should be dropped from the mandatory curriculum.

But why stop there? Maybe we should do away with math classes altogether.

May 10, 2015
A Fundy Thing Happened
From alien language to 3D printed organs.
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Get ready for déjà vu as you listen to some of our favorite interviews from the past year. It's our annual fundraising podcast. Come for the great interviews, stay for the great interviews. Lend us your support along the way.

What’s for dinner? Maybe Soylent. Made by … people! We do a taste test. Then meet your gut microbes. They control your health and even your mood.

Apr 26, 2015
Invisible Worlds
What you can’t see.
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ENCORE You can’t see it, but it’s there, whether an atom, a gravity wave, or the bottom of the ocean … but we have technology that allows us to detect what eludes our sight. When we do, whole worlds open up.

Without telescopes, asteroids become visible only three seconds before they slam into the Earth. Find out how we track them long before that happens. Also, could pulsars help us detect the gravity waves that Einstein’s theory predicts?

Apr 19, 2015
Life in Space
Can we find it?
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ENCORE Discovering bacteria on Mars would be big news. But nothing would scratch our alien itch like making contact with intelligent life. Hear why one man is impatient for the discovery, and also about the new tools that may speed up the "eureka" moment. One novel telescope may help us find E.T. at home, by detecting the heat of his cities.

Also, the father of modern SETI research and how decoding the squeals of dolphins could teach us how to communicate with aliens.

Apr 12, 2015
Skeptic Check: Monster Mashup
Which ones exist?
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ENCORE Monsters don’t exist. Except when they do. And extinction is forever, except when it isn’t. So, which animals are mythical and which are in hiding?

Bigfoot sightings are plentiful, but real evidence for the hirsute creature is a big zilch. Yet, the coelacanth, a predatory fish thought extinct, actually lives. Today, its genome is offering clues as to how and when our fishy ancestors first flopped onto land.

Mar 29, 2015
Hidden History
Reinterpreting the past.
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Archeologists continue to hunt for the city of Atlantis, even though it may never have existed. But, what if it did? Its discovery would change ancient history. Sometimes when we dig around in the past, we can change our understanding of how we got to where we are.

We thought we had wrapped up the death of the dinosaurs: blame it on an asteroid. But evidence unearthed in Antarctica and elsewhere suggests the rock from space wasn’t the sole culprit.

Mar 22, 2015
Power to the People
Bring a little light into your life.
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ENCORE Let there be light! Well, it’s easy to do: just flip a switch. But it took more than the invention of the light bulb to make that possible. It required new technology for the distribution of electricity. And that came, not so much from Thomas Edison, but from a Serbian genius named Nikola Tesla.

Hear his story plus ideas on what might be the breakthrough energy innovations of the future. Perhaps hydrogen-fueled cars, nuclear fusion electrical generators or even orbiting solar cells?

Mar 08, 2015
Mars-Struck
Red Planet-Bound.
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You love to travel. But would you if doing so meant never coming home? The private company Mars One says it will land humans on the Red Planet by 2026, but is only offering passengers one-way tickets. Hundreds of thousands of people volunteered to go.

Meet a young woman who made the short list, and hear why she’s ready to be Mars-bound. Also, why microbes could be hiding in water trapped in the planet’s rocks. And, how a wetter, better Mars lost its atmosphere and became a dry and forbidding place.

Feb 15, 2015
Sesquicentennial Science
Scientific knowledge, then and now.
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Today, scientists are familiar to us, but they weren’t always. Even the word “scientist” is relatively modern, dating from the Victorian Era.

And it is to that era we turn as we travel to the University of Notre Dame to celebrate the 150th anniversary of its College of Science with a show recorded in front of a live audience.

Find out how the modern hunt for planets around other stars compares to our knowledge of the cosmos a century and a half ago. Also how faster computers have ushered in the realm of Big Data.

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.