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29:51

Richard Branson

Life at 30,000 feet

Posted Oct 2007
21:20

Paul MacCready

A flight on solar wings

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
15:31

Jeff Skoll

My journey into movies that matter

Posted Aug 2007
18:23

Jacqueline Novogratz

Patient capitalism

Posted Aug 2007
19:01

Euvin Naidoo

Why invest in Africa

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
20:13

Ngozi Okonjo-Iweala

Want to help Africa? Do business here

Posted May 2007
3:05

Stewart Brand

What squatter cities can teach us

Posted May 2007
20:33

Sergey Brin + Larry Page

The genesis of Google

Posted May 2007
14:18

Chris Anderson

Technology's long tail

Posted Apr 2007
17:11

Jeff Bezos

The electricity metaphor for the web's future

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
17:01

Seth Godin

How to get your ideas to spread

Posted Apr 2007
22:20

Juan Enriquez

The life code that will reshape the future

Posted Apr 2007
20:04

Chris Bangle

Great cars are great art

Posted Apr 2007
20:07

Dean Kamen

To invent is to give

Posted Apr 2007
14:10

Paul Bennett

Design is in the details

Posted Apr 2007
24:07

Bill Clinton

My wish: Rebuilding Rwanda

Posted Apr 2007
19:01

Charles Leadbeater

The era of open innovation

Posted Jan 2007
16:41

Bjorn Lomborg

Global priorities bigger than climate change

Posted Jan 2007
14:03

Robert Neuwirth

The hidden world of shadow cities

Posted Jan 2007
3:30

Richard St. John

8 secrets of success

Posted Dec 2006
22:56

Ray Kurzweil

The accelerating power of technology

Posted Nov 2006
26:49

Robert Fischell

My wish: Three unusual medical inventions

Posted Oct 2006
19:37

Burt Rutan

The real future of space exploration

Posted Oct 2006
18:45

Ashraf Ghani

How to rebuild a broken state

Posted Oct 2006
18:00

Sasa Vucinic

Why we should invest in a free press

Posted Oct 2006
15:52

Iqbal Quadir

How mobile phones can fight poverty

Posted Oct 2006
12:53

Jacqueline Novogratz

Invest in Africa's own solutions

Posted Oct 2006
19:37

Barry Schwartz

The paradox of choice

Posted Sep 2006
17:30

Malcolm Gladwell

Choice, happiness and spaghetti sauce

Posted Sep 2006
21:15

Steven Levitt

The freakonomics of crack dealing

Posted Sep 2006