Euvin Naidoo: Why invest in Africa

TEDGlobal 2007

Euvin Naidoo: Why invest in Africa


South African investment banker Euvin Naidoo explains why investing in Africa can make great business sense.

William Kamkwamba: How I built a windmill

TEDGlobal 2007

William Kamkwamba: How I built a windmill


When he was just 14 years old, Malawian inventor William Kamkwamba built his family an electricity-generating windmill from spare parts, working from rough plans he found in a library book.

Ngozi Okonjo-Iweala: Aid versus trade

TEDGlobal 2007

Ngozi Okonjo-Iweala: Aid versus trade


Ngozi Okonjo-Iweala, the former finance minister of Nigeria, sums up four days of intense discussion on aid versus trade on the closing day of TEDGlobal 2007, and shares a personal story explaining her own commitment to this cause.

George Ayittey: Africa's cheetahs versus hippos

TEDGlobal 2007

George Ayittey: Africa's cheetahs versus hippos


Ghanaian economist George Ayittey unleashes a torrent of controlled anger toward corrupt leaders in Africa -- and calls on the “Cheetah generation” to take back the continent.

Allison Hunt: How to get (a new) hip

TED2007

Allison Hunt: How to get (a new) hip


When Allison Hunt found out that she needed a new hip -- and that Canada’s national health care system would require her to spend nearly 2 years on a waiting list (and in pain) -- she took matters into her own hands.

Rives: The  4 a.m. mystery

TED2007

Rives: The 4 a.m. mystery


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.

David Bolinsky: Visualizing the wonder of a living cell

TED2007

David Bolinsky: Visualizing the wonder of a living cell


Medical animator David Bolinsky presents 3 minutes of stunning animation that show the bustling life inside a cell.

Will Wright: Spore, birth of a game

TED2007

Will Wright: Spore, birth of a game


In a friendly, high-speed presentation, Will Wright demos his newest game, Spore, which promises to dazzle users even more than his previous masterpieces.

Deborah Gordon: The emergent genius of ant colonies

TED2003

Deborah Gordon: The emergent genius of ant colonies


With a dusty backhoe, a handful of Japanese paint markers and a few students in tow, Deborah Gordon digs up ant colonies in the Arizona desert to understand their complex social system.

Jonathan Harris: The Web's secret stories

TED2007

Jonathan Harris: The Web's secret stories


Jonathan Harris wants to make sense of the emotional world of the Web. With deep compassion for the human condition, his projects troll the Internet to find out what we're all feeling and looking for.

Emily Oster: Flip your thinking on AIDS in Africa

TED2007

Emily Oster: Flip your thinking on AIDS in Africa


Emily Oster re-examines the stats on AIDS in Africa from an economic perspective and reaches a stunning conclusion: Everything we know about the spread of HIV on the continent is wrong.

Alan Russell: The potential of regenerative medicine

TED2006

Alan Russell: The potential of regenerative medicine


Alan Russell studies regenerative medicine -- a breakthrough way of thinking about disease and injury, using a process that can signal the body to rebuild itself.

Bill Stone: I'm going to the moon. Who's with me?

TED2007

Bill Stone: I'm going to the moon. Who's with me?


Bill Stone, a maverick cave explorer who has plumbed Earth’s deepest abysses, discusses his efforts to mine lunar ice for space fuel and to build an autonomous robot for studying Jupiter’s moon Europa.

Hans Rosling: New insights on poverty

TED2007

Hans Rosling: New insights on poverty


Researcher Hans Rosling uses his cool data tools to show how countries are pulling themselves out of poverty. He demos Dollar Street, comparing households of varying income levels worldwide. Then he does something really amazing.

Stephen Lawler: Tour Microsoft's Virtual Earth

TED2007

Stephen Lawler: Tour Microsoft's Virtual Earth


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.

Ethel: A string quartet plays "Blue Room"

TED2006

Ethel: A string quartet plays "Blue Room"


The avant-garde string quartet Ethel performs the third movement from Phil Kline's four-part suite "The Blue Room and Other Stories." Searching melodic lines show off the deep, emotional musicality of these passionate players.

Anand Agarawala: Rethink the desktop with BumpTop

TED2007

Anand Agarawala: Rethink the desktop with BumpTop


Anand Agarawala presents BumpTop, a user interface that takes the usual desktop metaphor to a glorious, 3-D extreme, transforming file navigation into a freewheeling playground of crumpled documents and clipping-covered "walls."

Robert Thurman: We can be Buddhas

TEDSalon 2006

Robert Thurman: We can be Buddhas


In our hyperlinked world, we can know anything, anytime. And this mass enlightenment, says Buddhist scholar Bob Thurman, is our first step toward Buddha nature.

Blaise Agüera y Arcas: How PhotoSynth can connect the world's images

TED2007

Blaise Agüera y Arcas: How PhotoSynth can connect the world's images


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.

John Doerr: Salvation (and profit) in greentech

TED2007

John Doerr: Salvation (and profit) in greentech


"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.

Ngozi Okonjo-Iweala: Want to help Africa? Do business here

TED2007

Ngozi Okonjo-Iweala: Want to help Africa? Do business here


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.

Tierney Thys: Swim with the giant sunfish

TED2003

Tierney Thys: Swim with the giant sunfish


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.

Jeff Hawkins: How brain science will change computing

TED2003

Jeff Hawkins: How brain science will change computing


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.

Stewart Brand: What squatter cities can teach us

TED2006

Stewart Brand: What squatter cities can teach us


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.

David Kelley: Human-centered design

TED2002

David Kelley: Human-centered design


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.

James Howard Kunstler: The ghastly tragedy of the suburbs

TED2004

James Howard Kunstler: The ghastly tragedy of the suburbs


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.

Stew: "Black Men Ski"

TED2006

Stew: "Black Men Ski"


What happens when a black man visits Aspen? Singer/songwriter Stew and his band are about to let you know.

Sergey Brin + Larry Page: The genesis of Google

TED2004

Sergey Brin + Larry Page: The genesis of Google


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.

Natalie MacMaster: Cape Breton fiddling in reel time

TED2002

Natalie MacMaster: Cape Breton fiddling in reel time


Violinist Natalie MacMaster and TED Musical Director Thomas Dolby play Dolby’s original song “Blue Is a River” in this ethereal duet -- with a little dancing.

Dan Dennett: Dangerous memes

TED2002

Dan Dennett: Dangerous memes


Starting with the simple tale of an ant, philosopher Dan Dennett unleashes a devastating salvo of ideas, making a powerful case for the existence of memes -- concepts that are literally alive.