A Dialogue: A Conversation with Carl Sagan and Ted Turner

A Dialogue: A Conversation with Carl Sagan and Ted Turner

 

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0h 44m 1989 HD

Updates a number of themes from the Cosmos television series. Turner and Sagan discuss issues that are vital to our survival: pollution, the greenhouse effect, and nuclear weapons. Dr. Sagan explains the benefits of our space program and the possibility of time travel.


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