Exploring Carl Sagan Speaking About Greenhouse Warming In 1990
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- Carl Sagan
- Support Climate Denial Crock of the Week http://climatecrocks.com/ A lot of people still believe global
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- Carl Sagan
- The famous 1985 congressional testimony by astronomer and science communicator
In-Depth Information on Carl Sagan Speaking About Greenhouse Warming In 1990
Original video with other speakers: https://www.c-span.org/video/?12333-1/caring-creation Copy of the same on YouTube: ... Original source: https://www.c-span.org/video/?125856-1/ Carl Sagan Dr.
An important part of a longer keynote
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