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15:40
Carolyn Steel
How food shapes our cities
9:31
Michael Pritchard
How to make filthy water drinkable
18:29
Paul Romer
Why the world needs charter cities
3:40
Edward Burtynsky
Photographing the landscape of oil
16:43
Gordon Brown
Wiring a web for global good
15:44
Loretta Napoleoni
The intricate economics of terrorism
5:05
Shereen El Feki
Pop culture in the Arab world
5:37
Cynthia Schneider
The surprising spread of Idol TV
16:34
Paul Collier
New rules for rebuilding a broken nation
19:56
Hans Rosling
Let my dataset change your mindset
15:48
Clay Shirky
How social media can make history
16:42
Stewart Brand
4 environmental 'heresies'
17:04
Jacqueline Novogratz
A third way to think about aid
12:29
Michelle Obama
A passionate, personal case for education
3:05
Cameron Sinclair
The refugees of boom-and-bust
20:45
Barry Schwartz
Our loss of wisdom
19:05
Bruce Bueno de Mesquita
A prediction for the future of Iran
14:33
Alex Tabarrok
How ideas trump crises
5:53
Ray Zahab
My trek to the South Pole
10:02
Hans Rosling
Insights on HIV, in stunning data visuals
20:42
Willie Smits
How to restore a rainforest
3:56
Erik Hersman
Reporting crisis via texting
18:06
Shai Agassi
A new ecosystem for electric cars
18:00
Louise Fresco
We need to feed the whole world
4:34
Jay Walker
The world's English mania
12:15
Nathan Wolfe
The jungle search for viruses
16:05
P.W. Singer
Military robots and the future of war
15:19
Nandan Nilekani
Ideas for India's future
7:30
Jacqueline Novogratz
An escape from poverty
17:26
Dan Ariely
Are we in control of our own decisions?
6:48
Nicholas Negroponte
Taking OLPC to Colombia
20:24
Dan Barber
A foie gras parable
16:38
Jennifer 8. Lee
The hunt for General Tso
16:51
Paul Collier
The "bottom billion"
17:44
Paul Stamets
6 ways mushrooms can save the world
4:29
Alisa Miller
How the news distorts our worldview
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