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20:38

Carne Ross

An independent diplomat

Posted Sep 2010 Rated Inspiring, Courageous
18:10

Johan Rockstrom

Let the environment guide our development

Posted Aug 2010 Rated Informative, Persuasive
19:33

Julian Assange

Why the world needs WikiLeaks

Posted Jul 2010 Rated Courageous, Inspiring
19:45

Ethan Zuckerman

Listening to global voices

Posted Jul 2010 Rated Inspiring, Informative
18:58

Charles Leadbeater

Education innovation in the slums

Posted Jun 2010 Rated Inspiring, Informative
21:05

Seth Berkley

HIV and flu — the vaccine strategy

Posted May 2010 Rated Informative, Fascinating
18:35

Roz Savage

Why I'm rowing across the Pacific

Posted Apr 2010 Rated Inspiring, Courageous
19:01

Michael Specter

The danger of science denial

Posted Apr 2010 Rated Persuasive, Informative
19:14

Elizabeth Pisani

Sex, drugs and HIV — let's get rational

Posted Apr 2010 Rated Persuasive, Informative
18:01

Kevin Bales

How to combat modern slavery

Posted Mar 2010 Rated Inspiring, Informative
23:06

Sam Harris

Science can answer moral questions

Posted Mar 2010 Rated Persuasive, Inspiring
20:03

Jane McGonigal

Gaming can make a better world

Posted Mar 2010 Rated Inspiring, Fascinating
27:49

Bill Gates

Innovating to zero!

Posted Feb 2010 Rated Informative, Inspiring
21:53

Jamie Oliver

Teach every child about food

Posted Feb 2010 Rated Inspiring, Persuasive
18:01

Sendhil Mullainathan

Solving social problems with a nudge

Posted Feb 2010 Rated Informative, Persuasive
18:26

Devdutt Pattanaik

East vs. West — the myths that mystify

Posted Nov 2009 Rated Inspiring, Fascinating
18:53

Parag Khanna

Mapping the future of countries

Posted Sep 2009 Rated Informative, Fascinating
19:30

Misha Glenny

The real story of McMafia — how global crime networks work

Posted Sep 2009 Rated Informative, Fascinating
19:22

James Balog

Time-lapse proof of extreme ice loss

Posted Sep 2009 Rated Persuasive, Informative
19:56

Hans Rosling

Let my dataset change your mindset

Posted Aug 2009 Rated Informative, Fascinating
18:03

Emmanuel Jal

The music of a war child

Posted Aug 2009 Rated Inspiring, Courageous
18:29

Paul Romer

Why the world needs charter cities

Posted Aug 2009 Rated Persuasive, Inspiring
18:00

Louise Fresco

We need to feed the whole world

Posted May 2009 Rated Informative, Persuasive
18:06

Shai Agassi

A new ecosystem for electric cars

Posted Apr 2009 Rated Persuasive, Inspiring
19:05

Bruce Bueno de Mesquita

A prediction for the future of Iran

Posted Apr 2009 Rated Informative, Fascinating
20:42

Willie Smits

How to restore a rainforest

Posted Mar 2009 Rated Inspiring, Ingenious
20:45

Barry Schwartz

Our loss of wisdom

Posted Feb 2009 Rated Inspiring, Persuasive
20:24

Dan Barber

A foie gras parable

Posted Nov 2008 Rated Inspiring, Fascinating
23:09

Samantha Power

A complicated hero in the war on dictatorship

Posted Nov 2008 Rated Inspiring, Informative
19:24

John Francis

Walk the earth ... my 17-year vow of silence

Posted Nov 2008 Rated Inspiring, Courageous
18:07

Robert Thurman

Expanding your circle of compassion

Posted Oct 2008 Rated Inspiring, Beautiful
18:38

James Forbes

Compassion at the dinner table

Posted Oct 2008 Rated Inspiring, Beautiful
18:44

Newton Aduaka

The story of Ezra

Posted Oct 2008 Rated Courageous, Inspiring
18:21

Jared Diamond

Why do societies collapse?

Posted Oct 2008 Rated Informative, Persuasive
18:55

Mihaly Csikszentmihalyi

Flow, the secret to happiness

Posted Oct 2008 Rated Inspiring, Informative
23:16

Philip Zimbardo

The psychology of evil

Posted Sep 2008 Rated Inspiring, Fascinating