16:54climate changeTalk
Carl Sagan testifying before Congress in 1985 on climate change
carlsagandotcom
4 HN recommenders
16:54climate changeTalk
carlsagandotcom
4 HN recommenders
Energy and environmental questions involve engineering, natural systems and long time scales. These videos cover climate, geology, ecology and the ways energy is produced and used. Explore a topic to understand a physical process or compare approaches to a practical environmental problem.
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