Episodes

Jun 28, 2015
Are you protected?

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
Shape-shifting bacteria and viruses

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
How Einstein changed our understanding of Nature.

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?


May 31, 2015
Life without Algebra

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
From alien language to 3D printed organs.

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
What you can’t see.

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
Can we find it?

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
Which ones exist?

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 22, 2015
Bring a little light into your life.

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?

Plus, a reminder of cutting-edge technology back in Napoleon’s day: lighthouses.


Mar 08, 2015
Red Planet-Bound.

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 22, 2015
The planet we made.

The world is hot, and getting hotter. But higher temperatures aren’t the only impact our species is having on mother Earth. Urbanization, deforestation, and dumping millions of tons of plastic into the oceans … these are all ways in which humans are leaving their mark.

So are we still in the Holocene, the geological epoch that started a mere 11,000 years ago at the end of the last ice age? Some say we’ve moved on to the age of man – the Anthropocene.

It’s the dawn of an era, but can we survive this new phase in the history of our planet?


Feb 15, 2015
Scientific knowledge, then and now.

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
Unearthing history.

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
Secrets unraveled.

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
Cosmic conundrums.

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
You, but better.

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
Is sugar toxic?

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
The science of sticking around.

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
We are not alone

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
Noisy-ing around

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.