Displaying 1 - 20 of 1631 speakers
Eric-simons

Eric Simons

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Sir Chris Bonington

Burtrutan

Burt Rutan

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Richard Leakey

Maryland, USA
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Robert Ballard

Robert Ballard: What Hidden Underwater Worlds Are Left To ...

Connecticut, USA
Neil_hollander

Neil Hollander

Neil Hollander video

Brooklyn, NY, USA
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Dr. Alison Thompson

Miami, FL 33133, USA
Sir-richard-branson-9224520-1-402

Sir Richard Branson

Richard Branson: Giving Back To The World Is Good For Business

Necker Island, British Virgin Islands
Adami_chris

Dr. Christoph Adami

Michigan, USA
Marc-cornelissen

Marc Cornelissen

Duncanpro12

Pearl Duncan

New York, NY, USA
Josh-bernstein

Josh Bernstein

New York, NY, USA
Richard_wiese_2011-02-07_17-08-34

Richard Wiese

New York, NY, USA
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Matt Guthmiller

Cambridge, MA, USA
Anoushehansari

Anousheh Ansari

Plano, TX, USA
Expert-header

Louise Leakey

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Buzz Aldrin

Legendary astronaut Buzz Aldrin lays out his hopes for colonizing Mars

California, USA
Steven_20callahan-1528542

Steven Callahan

Washington, DC, USA
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Sebastian Copeland

Face120

Bryan Crump

California, USA
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