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6:52

Martin Rees

Can we prevent the end of the world?

1M views Aug 2014
4:34

Ze Frank

Are you human?

2.6M views Jul 2014
9:45

AJ Jacobs

The world's largest family reunion … we're all invited!

921K views Jun 2014
6:49

Dan Gilbert

The psychology of your future self

2M views Jun 2014
15:33

Stephen Cave

The 4 stories we tell ourselves about death

1.8M views Dec 2013
6:03

Judy MacDonald Johnston

Prepare for a good end of life

1.2M views May 2013
17:40

David Christian

The history of our world in 18 minutes

4.8M views Apr 2011
10:52

Jody Williams

A realistic vision for world peace

538K views Jan 2011
12:55

Joel Burns

A message to gay teens: It gets better

250K views Oct 2010
18:00

Ze Frank

My web playroom

1.6M views Oct 2010
17:54

Nicholas Christakis

How social networks predict epidemics

500K views Sep 2010
4:01

Jessa Gamble

Our natural sleep cycle is nothing like what we do now

1.5M views Sep 2010
4:22

Viktor E Frankl

Why believe in others

880K views May 2010
18:01

Kevin Bales

How to combat modern slavery

688K views Mar 2010
6:47

Patsy Rodenburg

Why I do theater

157K views Mar 2010
20:49

Ken Kamler

Medical miracle on Everest

561K views Mar 2010
37:26

Robert Sapolsky

The uniqueness of humans

514K views Jan 2010
11:20

Ryan Lobo

Photographing the hidden story

495K views Dec 2009
17:27

Thulasiraj Ravilla

How low-cost eye care can be world-class

256K views Dec 2009
8:51

Stefana Broadbent

How the Internet enables intimacy

980K views Nov 2009
14:48

Nina Jablonski

Skin color is an illusion

722K views Jul 2009
14:54

Yann Arthus-Bertrand

A wide-angle view of fragile Earth

599K views Jun 2009
21:00

Sarah Jones

A one-woman global village

983K views Apr 2009
7:45

Dan Dennett

Cute, sexy, sweet, funny

2M views Mar 2009
18:47

Rodney Brooks

Robots will invade our lives

521K views Sep 2008
13:33

Marvin Minsky

Health and the human mind

417K views Sep 2008
15:36

Louise Leakey

A dig for humanity's origins

484K views Jul 2008
16:14

Chris Abani

On humanity

702K views Jul 2008
17:40

AJ Jacobs

My year of living biblically

1.7M views Jul 2008
17:21

They Might Be Giants

Wake up!

313K views Apr 2008
19:31

Howard Rheingold

The new power of collaboration

682K views Feb 2008
17:06

Philippe Starck

Design and destiny

1.4M views Dec 2007
29:42

Stephen Petranek

10 ways the world could end

1.5M views Sep 2007
15:51

Zeresenay Alemseged

The search for humanity's roots

663K views Sep 2007
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