Blaise Aguera y Arcas leads a dazzling demo of Photosynth, software that could transform the way we look at digital images. Using still photos culled from the Web, Photosynth builds breathtaking dreamscapes and lets us navigate them.
"I don't think we're going to make it," John Doerr says in an emotional talk about climate change and investment. To create a world fit for his daughter to live in, he says, we need to invest now in clean, green energy.
We know the negative images of Africa -- famine and disease, conflict and corruption. But, says Ngozi Okonjo-Iweala, there's another, less-told story happening in many African nations: one of reform, economic growth and business opportunity.
Marine biologist Tierney Thys asks us to step into the water to visit the world of the Mola mola, or giant ocean sunfish. Basking, eating jellyfish and getting massages, this behemoth offers clues to life in the open sea.
Treo creator Jeff Hawkins urges us to take a new look at the brain -- to see it not as a fast processor, but as a memory system that stores and plays back experiences to help us predict, intelligently, what will happen next.
Rural villages worldwide are being deserted, as billions of people flock to cities to live in teeming squatter camps and slums. Stewart Brand says this is a good thing. Why? It'll take you 3 minutes to find out.
IDEO's David Kelley says that product design has become much less about the hardware and more about the user experience. He shows video of this new, broader approach, including footage from the Prada store in New York.
In James Howard Kunstler's view, public spaces should be inspired centers of civic life and the physical manifestation of the common good. Instead, he argues, what we have in America is a nation of places not worth caring about.
Google co-founders Larry Page and Sergey Brin offer a peek inside the Google machine, sharing tidbits about international search patterns, the philanthropic Google Foundation, and the company's dedication to innovation and employee happiness.
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."
Satirist Tom Rielly delivers a wicked parody of the 2006 TED conference, taking down the $100 laptop, the plight of the polar bear, and people who mention, one too many times, that they work at Harvard. Watch for a special moment between Tom and Al Gore.
Caroline Lavelle plays the cello like a sorceress casting a spell, occasionally hiding behind her wild mane of blond hair as she sings of pastoral themes. She performs "Farther than the Sun," backed by Thomas Dolby on keyboards.
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.
Philosopher Dan Dennett calls for religion -- all religion -- to be taught in schools, so we can understand its nature as a natural phenomenon. Then he takes on The Purpose-Driven Life, disputing its claim that, to be moral, one must deny evolution.
Psychologist Barry Schwartz takes aim at a central tenet of western societies: freedom of choice. In Schwartz's estimation, choice has made us not freer but more paralyzed, not happier but more dissatisfied.