American Coverup of Catyclysims

Young Carl Sagan vs Immanuel Velikovsky

How the US Scientific community came to coverup cycliclac catyclysims much like they did UFOs

00:00 Carl Sagan early life and debunking UFOs
03:34 Sagan and the American scientific community abandoning UFOs
04:49 Immanuel Velikovsky
10:05 Velikovsky's theories spread
16:54 Sagan and the American scientific community abondaning Velikovsky's theories
19:15 Sagan the debunker of UFOs and Velikovsky's theories

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