Length 1:00:31 2021 Purdue Presidential Lecture Series – Steven E. Koonin Steven Koonin Purdue University Science Oct 20, 2021
Length 1:02:17 Discovery Park Distinguished Lecture Series Steve Koonin Steven Koonin Purdue University Climate Science Apr 16, 2019
Length 1:00:31 
Length 1:02:17
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