Jessi and Squeaks are on a beach vacation, so they've called in their pal, Dr. Lawrence Turtleman, to take over the show for today! And what is he going to teach you about? Turtles, of course!

It’s not easy to find active plate tectonics on other worlds, but doing so may bring us one step closer to finding a planet that can support life.

Tech enthusiast Kevin Kelly asks "What does technology want?" and discovers that its movement toward ubiquity and complexity is much like the evolution of life.

Jessi had the weirdest dream last night and wants to share with you why our brains make dreams.

It's so obvious that it's practically proverbial: you can't unboil an egg. But actually, it turns out that you can -- sort of. Eleanor Nelsen explains the process by which mechanical energy can undo what thermal energy has done.

For a crime he committed in his early twenties, the courts sentenced Marlon Peterson to 10 years in prison -- and, as he says, a lifetime of irrelevance. While behind bars, Peterson found redemption through a penpal mentorship program...

Rainforest Edition: Ants in The Rainforest.

You might know that if you chomp on a Wint-O-Green Lifesaver in a dark room, you can see little blue flashes of light in your mouth. What you might not know is that this is an example of triboluminescence: a fascinating, somewhat...

Only 10% of the world is left handed, so why are so many athletes lefties?

During most of the past 2 million years or so, there were several species of hominins on Earth at any given time. Like, you might be familiar with our famous extinct cousins, the Neanderthals. But since 2010 we’ve been uncovering...

As an expert on cutting-edge digital displays, Mary Lou Jepsen studies how to show our most creative ideas on screens. And as a brain surgery patient herself, she is driven to know more about the neural activity that underlies invention,...

Could there be intelligent life on other planets? This question has piqued imagination and curiosity for decades. Explore the answer with the Drake Equation -- a mathematical formula that calculates the possibility of undiscovered life.

Poet Rives does 8 minutes of lyrical origami, folding history into a series of coincidences surrounding that most surreal of hours, 4 o'clock in the morning.

We've been to the moon, we've mapped the continents, we've even been to the deepest point in the ocean -- twice. What's left for the next generation to explore? Biologist and explorer Nathan Wolfe suggests this answer: Almost everything....

Timothy Prestero thought he'd designed the perfect incubator for newborns in the developing world -- he even won awards for it. But he and his team learned a hard lesson when their incubator completely failed to catch on. Hear his...

From problems with the moon, to the lumpiness of earth, sea levels aren't quite as exact as we have them figured out to be.

On the heels of the breakout success of his film "Crazy Rich Asians," director Jon M. Chu reflects on what drives him to create -- and makes a resounding case for the power of connection and on-screen representation.

A huge amount of viewers of the HBO series Game of Thrones (not us of course, no no no) are downloading the show illegally. But despite being the most pirated show of 2012, the Game of Thrones DVDs are top sellers, breaking HBO's own...

Chip Kidd doesn't judge books by their cover, he creates covers that embody the book -- and he does it with a wicked sense of humor. In this deeply felt (and deeply hilarious) talk, he shares the art and the philosophy behind his cover...

They're probably the most successful birds in the history of birds. But what do you really know about pigeons? Hank shares three weird facts about the birds, from their amazing chick-raising trick to their history of heroism in wartime.

Can you make a black hole out of light? Learn about the strange theoretical object called the 'Kugelblitz'.

Lizards tend to scurry around in short bursts rather than running long distances, and the reason why might be nearly as old as life on land.

Up to 100,000 people died in drug-related violence in Mexico in the last 6 years. We might think this has nothing to do with us, but in fact we are all complicit, says Yale professor Rodrigo Canales in this unflinching talk that turns...

From simple alphabets to secret symbolic languages, graphic designer Saki Mafundikwa celebrates the many forms of written communication across the continent of Africa. He highlights the history and legacy that are embodied in written...