TED Talks

Dan Gilbert, author of "Stumbling on Happiness," challenges the idea that we’ll be miserable if we don’t get what we want. Our "psychological immune system" lets us feel truly happy even when things don’t go as planned.

Mihaly Czikszentmihalyi asks, "What makes a life worth living?" Noting that money cannot make us happy, he looks to those who find pleasure and lasting satisfaction in activities that bring about a state of "flow."

Dean Ornish talks about simple, low-tech and low-cost ways to take advantage of the body's natural desire to heal itself. Dean Ornish is a clinical professor at UCSF and founder of the Preventive Medicine Research Institute. He's a leading expert on fighting illness -- particularly heart disease with dietary and lifestyle changes.

Mathematician Steven Strogatz shows how flocks of creatures (like birds, fireflies and fish) manage to synchronize and act as a unit -- when no one's giving orders. The powerful tendency extends into the realm of objects, too.

Customers want to feel what they buy is authentic, but "Mass Customization" author Joseph Pine says selling authenticity is tough because, well, there's no such thing. He talks about a few experiences that may be artificial but make millions anyway.

Freakonomics author Steven Levitt presents new data on the finances of drug dealing. Contrary to popular myth, he says, being a street-corner crack dealer isn’t lucrative: It pays below minimum wage. And your boss can kill you.

Why do people see the Virgin Mary on a cheese sandwich or hear demonic lyrics in "Stairway to Heaven"? Using video and music, skeptic Michael Shermer shows how we convince ourselves to believe -- and overlook the facts.

Featuring the vocals and mischievous bell-playing of accordionist and singer Rachelle Garniez, the TED House Band -- led by Thomas Dolby on keyboard -- delivers this delightful rendition of the Edith Piaf standard "La Vie en Rose."

Cognitive researcher Nancy Etcoff looks at happiness -- the ways we try to achieve and increase it, the way it's untethered to our real circumstances, and its surprising effect on our bodies.