Watch Keynote: Carl Sagan's 90th Birthday | eCornell Be Informed. Be Inspired. Experience the Best of Cornell, Live and On Demand.

#COMOS turns 45 on Sept 28.

Last Nov. we celebrated Carl #Sagan 's 90th birthday. That's twice 45, and so that's my excuse for running this video with #CarlSagan 's wife, #AnnDruyan.
ecornell.cornell.edu/keynotes/vie... #Druyan