Dr. Neil DeGrasse Tyson, a disturbing thought

This video is about 20 minute of thought provoking learning with Dr. Tyson.  If you listen to the end, the final thought is amazingly thoughtful, it gets you thinking.  Dr. Neil DeGrasse Tyson is truly a man of science who has much to teach those of us willing to learn.

A Disturbing Thought!! by Dr. Neil DeGrasse Tyson, very thought provoking.