

Economist Eleni Gabre-Madhin outlines her ambitious vision to found the first commodities market in Ethiopia. Her plan would create wealth, minimize risk for farmers and turn the world's largest recipient of food aid into a regional food basket...
After Vusi Mahlasela played a 3-song set at TEDGlobal (including the moving "Thula Mama"), the audience simply wouldn't let him go. This charming encore, "Woza," showcases his brilliant guitar playing and multilingual lyrics
Natalie Imbruglia performs "Torn", alongside an awesomely literal mime (description from reddit)
"Freakonomics" author Steven Levitt examines the economic principles at work in an inner-city gang.
Arctic explorer Ben Saunders recounts his harrowing solo journey to the North Pole, complete with gorgeous images, amusing anecdotes and previously unseen video footage from the Pole.
"Stumbling on Happiness" author Dan Gilbert demonstrates just how poor we humans are at predicting (or understanding) what will make us happy. (Recorded July 2005 in Oxford, UK. Duration: 22:02)
MIT engineer Amy Smith explains the vision behind her inventions: low-cost devices that tackle tough problems in developing countries.
Great talk about transforming hard problems into fun games. Luis von Ahn invents Internet games that get people to solve problems that computers can't solve, and do it for free because it's part of a fun and addictive game. (cf. ESP game, Peekaboom, etc). 50 minutes, but funny and no fancy jargon.
What if you could find love one day in the metro? Could it even be... your soulmate? A funny short film in French (and English subtitles), with a little dose of cruelty thrown into the mix.
Dr. Jorge Hirsch, professor of physics, University of California San Diego presents the devasting consequences of a nuclear attack on Iran.