http://www.ted.com Samantha Power tells a story of a complicated hero, Sergio Vieira de Mello. This UN diplomat walked a thin moral line, negotiating with the world’s worst dictators to help their people survive crisis. It’s a compelling story told with a fiery passion.... Read More إقرأ المزيد | Share it now!

http://www.ted.com Physicist Lee Smolin talks about how the scientific community works: as he puts it, “we fight and argue as hard as we can,” but everyone accepts that the next generation of scientists will decide who’s right. And, he says, that’s how democracy works, too.... Read More إقرأ المزيد | Share it now!

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http://www.ted.com At the 2008 Serious Play conference, designer Tim Brown talks about the powerful relationship between creative thinking and play — with many examples you can try at home (and one that maybe you shouldn’t).... Read More إقرأ المزيد | Share it now!

For almost three decades, John Francis has been a planetwalker, traveling the globe by foot and sail with a message of environmental respect and responsibility (for 10 of those years without speaking). A funny, thoughtful talk with occasional banjo.... Read More إقرأ المزيد | Share it now!

http://www.ted.com James Surowiecki pinpoints the moment when social media became an equal player in the world of news-gathering: the 2005 tsunami, when YouTube video, blogs, IMs and txts carried the news — and preserved moving personal stories from the tragedy.... Read More إقرأ المزيد | Share it now!

http://www.ted.com Graham Hawkes takes us aboard his graceful, winged submarines to the depths of planet Ocean (a.k.a. “Earth”). It’s a deep blue world we landlubbers rarely see in 3D.... Read More إقرأ المزيد | Share it now!

http://www.ted.com Filmmaker Newton Aduaka shows clips from his powerful, lyrical feature film “Ezra,” about a child soldier in Sierra Leone.... Read More إقرأ المزيد | Share it now!

http://www.ted.com The Inventables guys, Zach Kaplan and Keith Schacht, demo some amazing new materials and how we might use them. Look for squishy magnets, odor-detecting ink, “dry” liquid and a very surprising 10-foot pole.... Read More إقرأ المزيد | Share it now!