Isaac Asimov talks about superstition, religion and why he teaches rationality
13:06
Isaac Asimov's Vision Of The Future | Letterman
16:54
Carl Sagan testifying before Congress in 1985 on climate change
15:33
Best of Isaac Asimov Amazing Arguments And Clever Comebacks Part 1
30:57
A Conversation with Bertrand Russell (1952)
20:28
Carl Sagan's last interview with Charlie Rose (Full Interview)
36:42
Richard Feynman - The World from another point of view
14:37
The Problem with Religion | Neil deGrasse Tyson
20:40