Hi -
This piece is indeed STRIKINGLY interesting. There is a video included with it that is Carl Sagan being interviewed. The video is about ten minutes long. In it, Sagan makes some EXCELLENT points.
http://www.collective-evolution.com/2013/12/19/carl-sagans-two-warnings-for-humanity-in-his-very-last-interview-you-might-want-to-hear-this/