Scientists Free Audio & Video

For more than 30 years, Richard P. Feynman's three-volume Lectures on Physics has been known worldwide as the classic resource for students and professionals alike....

Carl Sagan, one of the pre-eminent astronomers of our time, talks about his book "The Demon Haunted World: Science as a Candle in the Dark", which explores the country's growing fascination with pseudo-sciences.

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.

In this lecture professor Chandak Sengoopta discusses the life of Charles Darwin covering the major events in Darwin's life including his voyage on the HMS Beagle and his eventual publication of On the Origin of Species in 1859.

Jane Goodall hasn't found the missing link, but she's come closer than nearly anyone else. The primatologist says the only real difference between humans and chimps is our sophisticated language. She urges us to start using it to change the world.

What's it like to be pals with a genius? Onstage at TEDxCaltech, physicist Leonard Susskind spins a few stories about his friendship with the legendary Richard Feynman, discussing his unconventional approach to problems both serious and ... less so.

Nobel laureate James Watson opens TED2005 with the frank and funny story of how he and his research partner, Francis Crick, discovered the structure of DNA.

The Genius of Charles Darwin is a three-part television documentary, written and presented by evolutionary biologist Richard Dawkins.

Between February and October 1919, Nikola Tesla submitted many articles to the magazine Electrical Experimenter.

The great 20th century physicist and teacher Richard P. Feynman now has a free physics lecture series online courtesy of California Institute of Technology.