Have you ever lost a tooth? Or maybe you have teeth that are getting a little wiggly? It's all part of growing up! Join Jessi and Squeaks to learn why we lose our baby teeth and how we can take care of our new permanent teeth! Say cheese!

Why are global levels of anxiety and depression so high? Social epidemiologist Richard Wilkinson presents compelling data on the impact of inequality on mental health and social relationships in countries around the world. "Inequality,"...

Learn all about teeth! What kinds we have, how they help us, and how human teeth are different from other animals!

Will artificial intelligence ever surpass human intelligence? And if that happens, will AI be good or bad? Is evil AI like we see in Avengers: Age of Ultron inevitable?

Ron Gutman reviews a raft of studies about smiling, and reveals some surprising results. Did you know your smile can be a predictor of how long you'll live -- and that a simple smile has a measurable effect on your overall well-being?...

Smilodon was a fearsome Ice Age cat, the size of a modern-day tiger, that had a pair of fangs nearly 18 centimeters long. But it was only the last and largest of the great sabertooths: ridiculously long canines had already been a trend...

Keith Kirkland is developing wearable tech that communicates information using only the sense of touch. He's trying to figure out: What gestures and vibration patterns could intuitively communicate ideas like "stop" or "go"? Check out...

Many species show off their teeth as a threat, so where did humans get our friendly smiles?

When poet Robin Morgan found herself facing Parkinson’s disease, she distilled her experiences into these four quietly powerful poems — meditating on age, loss, and the simple power of noticing.

We yawn a lot when we're tired or warm, and sometimes we even yawn just because we see other people yawning! But why do we yawn in the first place?

Our emotions influence every aspect of our lives -- how we learn, how we communicate, how we make decisions. Yet they're absent from our digital lives; the devices and apps we interact with have no way of knowing how we feel....

John Hunter puts all the problems of the world on a 4'x5' plywood board -- and lets his 4th-graders solve them. At TED2011, he explains how his World Peace Game engages schoolkids, and why the complex lessons it teaches -- spontaneous,...

It's hard to always show compassion -- even to the people we love, but Robert Thurman asks that we develop compassion for our enemies. He prescribes a seven-step meditation exercise to extend compassion beyond our inner circle.

There's a mistaken belief in today's working world that leaders need to be serious all the time to be taken seriously. The research tells a different story. Based on the course they teach at Stanford's Graduate School of Business,...

TV news anchor Lee Thomas thought his career was over after he was diagnosed with vitiligo, an autoimmune disorder that left large patches of his skin without pigment and led to derision and stares. In a captivating talk, he shares how...

Ed Ulbrich, the digital-effects guru from Digital Domain, explains the Oscar-winning technology that allowed his team to digitally create the older versions of Brad Pitt's face for "The Curious Case of Benjamin Button."

On any given day we're lied to from 10 to 200 times, and the clues to detect those lies can be subtle and counter-intuitive. Pamela Meyer, author of Liespotting, shows the manners and "hotspots" used by those trained to recognize...

What's a company's purpose? It's not the same as mission or vision, which change when leadership changes. Strategist Ashley M. Grice explains the power of purpose to push boundaries of innovation and bring clarity to every aspect of an...

The 40 or so muscles in the human face can be activated in different combinations to create thousands of expressions. But do these expressions look the same and communicate the same meaning around the world regardless of culture? Is one...

In the face of trauma, happiness is resilience: a revolutionary act of thriving despite all odds, rather than wilting or surrendering. Community organizer and activist Miracle Jones offers a heart-to-heart meditation on the role of joy...

Being happy makes you smile, but that might just work the other way around, too.

Did you know you have functioning neurons in your intestines -- about a hundred million of them? Food scientist Heribert Watzke tells us about the "hidden brain" in our gut and the surprising things it makes us feel.

What makes you… you? How did you get to be that way? Today we’re talking about social development, starting with the role of nature and nurture in influencing a person’s development. We’ll discuss socialization, the importance of care &...

In France, what's left unsaid is often more eloquent than what is verbalized. Curious about how to read French body language and interpret gestures such as smiles or eye contact? Learn more about how the French subtly use body language...