The body gives off a whole bunch of signs and signals -- which ones have you noticed and how many are you ignoring?

Everyone wants to be happy. But how, exactly, does one go about it? Here, psychologists, journalists, Buddhist monks and more gives answers that may surprise.

Thelma Golden, curator at the Studio Museum in Harlem, talks through three recent shows that explore how art examines and redefines culture. The "post-black" artists she works with are using their art to provoke a new dialogue about race and culture -- and about the meaning of art itself.

The value of money is determined by how much (or how little) of it is in circulation. But who makes that decision, and how does their choice affect the economy at large? Doug Levinson takes a trip into the United States Federal Reserve, examining how the people who work there aim to balance the value of the dollar to prevent inflation or deflati...

Educator and activist Geoffrey Canada chose a powerful list of favorites — talks that address the cycles of poverty and gender violence, and offer bold suggestions for change.

About this video: In Africa, 40% of the female population does not have access to basic education. In this film, Angela K. Jimoh, IBM’s first female Country General Manager in Africa, explains why this issue exists and tells the story of Akua, a young girl whose mother was determined her daughter get an education. To help support girls’ access t...

Esha Alwani began writing songs when she was six years old, shortly after being diagnosed with Tourette syndrome. And she noticed something amazing: whenever she played music, her involuntary tics suddenly went away. Listen along as Alwani explores the power of music and delights the audience with an ethereal performance of her piano ballad "I'm...

Writer Andrew Solomon has spent his career telling stories of the hardships of others. Now he turns inward, bringing us into a childhood of adversity, while also spinning tales of the courageous people he's met in the years since. In a moving, heartfelt and at times downright funny talk, Solomon gives a powerful call to action to forge meaning f...

After 15 years in the British diplomatic corps, Carne Ross became a "freelance diplomat," running a bold nonprofit that gives small, developing and yet-unrecognized nations a voice in international relations. At the BIF-5 conference, he calls for a new kind of diplomacy that gives voice to small countries, that works with changing boundaries and...

Why is 'x' the symbol for an unknown? In this short and funny talk, Terry Moore gives the surprising answer.

Nora York gives a stunning performance of her song "What I Want," with Jamie Lawrence (keyboards), Steve Tarshis (guitar) and Arthur Kell (bass).

Violinist Sirena Huang gives a technically brilliant and emotionally nuanced performance. In a charming interlude, the 11-year-old praises the timeless design of her instrument.

Pianist and composer Jennifer Lin gives a magical performance, talks about the process of creativity and improvises a moving solo piece based on a random sequence of notes.

Rives tells a typographical fairy tale that's short and bittersweet ;)

In a wildly entertaining discussion with Richard Saul Wurman, architect Frank Gehry gives TEDsters his take on the power of failure, his recent buildings, and the all-important "Then what?" factor.

After speaking at TED2007 on elegance in physics, the amazing Murray Gell-Mann gives a quick overview of another passionate interest: finding the common ancestry of our modern languages.

Reed Kroloff gives us a new lens for judging new architecture: is it modern, or is it romantic? Look for glorious images from two leading practices -- and a blistering critique of the 9/11 planning process.

Why are so many things broken? In a hilarious talk from the 2006 Gel conference, Seth Godin gives a tour of things poorly designed, the 7 reasons why they are that way, and how to fix them.

Historian and diplomat Joseph Nye gives us the 30,000-foot view of the shifts in power between China and the US, and the global implications as economic, political and "soft" power shifts and moves around the globe.

Andrologist John Amory is developing innovative male contraception that gives men a new option for taking responsibility to prevent unintended pregnancy. He details the science in development -- and why the world needs a male pill.

In Western society, bats are often characterized as creepy, even evil. Zoologist Emma Teeling encourages us to rethink common attitudes toward bats, whose unique and fascinating biology gives us insight into our own genetic makeup.

Microsoft's Stephen Lawler gives a whirlwind tour of Virtual Earth, moving up, down and through its hyper-real cityscapes with dazzlingly fluidity, a remarkable feat that requires staggering amounts of data to bring into focus.

Writer and actor Anna Deavere Smith gives life to author Studs Terkel, convict Paulette Jenkins, a Korean shopkeeper and a bull rider, excerpts from her solo show "On the Road: A Search for American Character."

"The world needs you, badly," says legendary biologist E.O. Wilson in his letter to a young scientist. He gives advice collected from a lifetime of experience -- and reminds us that wonder and creativity are the center of the scientific life.

Too often, freelancers are told they have to choose between being creative or making money. Financial expert Paco de Leon debunks this thinking -- and gives practical advice on how you can set yourself apart and get paid what you deserve.

Art that doesn’t just grab your attention, but sends a message, makes a statement and resonates.

What does the future of business look like? In an informative talk, Philip Evans gives a quick primer on two long-standing theories in strategy -- and explains why he thinks they are essentially invalid.

Finding the right mate is no cakewalk -- but is it even mathematically likely? In a charming talk, mathematician Hannah Fry shows patterns in how we look for love, and gives her top three tips (verified by math!) for finding that special someone.

Renowned classical Indian dancer Ananda Shankar Jayant was diagnosed with cancer in 2008. She tells her personal story of not only facing the disease but dancing through it, and gives a performance revealing the metaphor of strength that helped her do it.

Some people love the feeling of cracking their knuckles, while others cringe at the sound. But what causes that trademark pop? And is it dangerous? Eleanor Nelsen gives the facts behind joint popping. [Directed by Steve Belfer Creative, narrated by Addison Anderson].