"Dr. Sagan explains the theory of nuclear winter and describes the catastrophic consequences of nuclear winter for the entire earth. Discusses the insanity of American and Soviet military policies and strategies which, if carried through, would result in nuclear winter."@en
"The most important study of our time by leading scientists reveals that the use of a small fraction of the world's nuclear arsenal would have such devastating climactic consequences that civilization as we know it would be destroyed and the human species would possibly become extinct. Internationally renowned scientist, Dr. Carl Sagan discusses the results of the research into the global consequences of nuclear war, illustrating his talk with extensive visuals."@en
"Dr. Sagan's Marshall lecture of April 18, 1985, delivered in Washington, D. C. under the sponsorship of the Natural Resources Defense Council and transmitted to Globescope via video broadcast satellite."

Nuclear winter changing our way of thinking