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18:00

Isabel Allende

Tales of passion

Posted Jan 2008
21:01

Larry Brilliant

The case for optimism

Posted Nov 2007
15:58

David Keith

A critical look at geoengineering against climate change

Posted Nov 2007
20:54

Matthieu Ricard

The habits of happiness

Posted Nov 2007
20:34

Eleni Gabre-Madhin

A commodities exchange for Ethiopia

Posted Oct 2007
16:03

Jan Chipchase

The anthropology of mobile phones

Posted Oct 2007
29:51

Richard Branson

Life at 30,000 feet

Posted Oct 2007
29:42

Stephen Petranek

10 ways the world could end

Posted Sep 2007
15:51

Zeresenay Alemseged

The search for humanity's roots

Posted Sep 2007
17:36

Deborah Scranton

An Iraq war movie crowd-sourced from soldiers

Posted Sep 2007
19:15

Steven Pinker

The surprising decline in violence

Posted Sep 2007
17:07

Andrew Mwenda

Aid for Africa? No thanks.

Posted Sep 2007
5:10

Dean Kamen

Luke, a new prosthetic arm for soldiers

Posted Aug 2007
15:31

Jeff Skoll

My journey into movies that matter

Posted Aug 2007
18:23

Jacqueline Novogratz

Patient capitalism

Posted Aug 2007
17:36

Chris Abani

Telling stories from Africa

Posted Aug 2007
17:31

Patrick Awuah

How to educate leaders? Liberal arts

Posted Aug 2007
19:01

Euvin Naidoo

Why invest in Africa

Posted Jul 2007
4:12

William Kamkwamba

How I built a windmill

Posted Jul 2007
22:10

Ngozi Okonjo-Iweala

Aid versus trade

Posted Jul 2007
17:50

George Ayittey

Africa's cheetahs versus hippos

Posted Jul 2007
15:34

Emily Oster

Flip your thinking on AIDS in Africa

Posted Jul 2007
17:10

Jonathan Harris

The Web's secret stories

Posted Jul 2007
18:57

Hans Rosling

New insights on poverty

Posted Jun 2007
23:22

Thomas Barnett

Let's rethink America's military strategy

Posted Jun 2007
12:06

Robert Thurman

We can be Buddhas

Posted Jun 2007
20:13

Ngozi Okonjo-Iweala

Want to help Africa? Do business here

Posted May 2007
17:52

John Doerr

Salvation (and profit) in greentech

Posted May 2007
16:41

Tierney Thys

Swim with the giant sunfish

Posted May 2007
3:05

Stewart Brand

What squatter cities can teach us

Posted May 2007
19:32

Tom Honey

Why would God create a tsunami?

Posted Apr 2007
20:05

William McDonough

Cradle to cradle design

Posted Apr 2007
17:34

Alex Steffen

The route to a sustainable future

Posted Apr 2007
27:25

Jane Goodall

What separates us from chimpanzees?

Posted Apr 2007
16:52

Nick Bostrom

A philosophical quest for our biggest problems

Posted Apr 2007
21:56

James Nachtwey

My wish: Let my photographs bear witness

Posted Apr 2007