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14:03
Robert Neuwirth
The hidden world of shadow cities
18:00
Sasa Vucinic
Why we should invest in a free press
16:52
Nick Bostrom
A philosophical quest for our biggest problems
19:00
David Deutsch
Chemical scum that dream of distant quasars
15:52
Iqbal Quadir
How mobile phones can fight poverty
18:45
Ashraf Ghani
How to rebuild a broken state
17:34
Alex Steffen
The route to a sustainable future
13:45
Eve Ensler
What security means to me
27:52
Bono
My wish: Three actions for Africa
18:03
Ben Saunders
Why did I ski to the North Pole?
20:05
William McDonough
Cradle to cradle design
19:31
Howard Rheingold
The new power of collaboration
23:22
Thomas Barnett
Let's rethink America's military strategy
19:32
Tom Honey
Why would God create a tsunami?
18:55
Mihaly Csikszentmihalyi
Flow, the secret to happiness
20:25
Eve Ensler
Happiness in body and soul
20:54
Matthieu Ricard
The habits of happiness
27:25
Jane Goodall
What separates us from chimpanzees?
4:37
Kristen Ashburn
The face of AIDS in Africa
18:21
Jared Diamond
Why do societies collapse?
22:01
Wade Davis
Dreams from endangered cultures
16:41
Tierney Thys
Swim with the giant sunfish
12:25
Lee Smolin
Science and democracy
16:30
Steven Johnson
The Web as a city
15:07
Noah Feldman
Politics and religion are technologies
12:55
Chris Anderson
TED's nonprofit transition
16:06
Keith Bellows
The camel's hump
29:42
Stephen Petranek
10 ways the world could end
44:38
Frank Gehry
My days as a young rebel
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