Nov. 21, 2019, 4:35 a.m.(UTC)
Presented by Walter Kronkite, this classic overly skeptical but still important to research one-hour documentary includes an interview with a 32-year old gum-chewing Carl Sagan. Although his presentation skills aren't quite refined at this point (spit out the gum, Carl!), the early seeds of his scientific skepticism are quite evident!

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