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100 Best TED Talks
Motivational Speeches

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1.
by James Kaler
Available on:
Audio Download

In this lecture Professor James Kaler puts Earth in perspective within the solar system, the galaxy, and the whole universe.

2.
by Neil deGrasse Tyson
Available on:
Online Video

Ever wonder about the our vast, mysterious universe - but don’t have time to earn that PhD? Superstar scientist Neil deGrasse Tyson has come to the rescue with Astrophysics for People in a Hurry, the brilliantly witty guide you’ve been waiting for.

3.
by Stephen Hawking
Available on:
Online Video

Stephen Hawking, Arthur C. Clarke and Carl Sagan (via satellite) discuss the Big Bang theory, God, our existence as well as the possibility of extraterrestrial life.

4.
by Michio Kaku
Available on:
Online Video

What if we could find one single equation that explains every force in the universe?

5.
by Bradley Schaefer
Available on:
Online Video

Why were the motions of the Sun, Moon, and stars so important to ancient people? Investigate key astronomical directions noticed by all cultures.

6.
by David Christian
Available on:
Audio Download | Online Video

Backed by stunning illustrations, David Christian narrates a complete history of the universe, from the Big Bang to the Internet, in a riveting 18 minutes.

7.
Available on:
Online Audio

Features highlights of the actual voices and sounds of the Apollo 13 mission during the most critical times of their near disaster in outer space.

8.
by Don Lincoln
Available on:
Online Video

Embark with Dr. Lincoln on a search for a theory of everything—a simple and comprehensive explanation for all physical phenomena in the universe.

9.
by Neil deGrasse Tyson
Available on:
Online Video

Scientists have made astounding progress in their grasp of the universe. But what remains to be understood?

10.
by Stephen Hawking
Available on:
Video Download | Online Video

In keeping with the theme of TED2008, professor Stephen Hawking asks some Big Questions about our universe -- How did the universe begin? How did life begin? Are we alone? -- and discusses how we might go about answering them.

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