It turns out the Time magazine cover “How to Survive the Coming Ice Age” is a photoshopped fake.  However, while the cover is a fake, Time was in fact printing stories about fears of global cooling in the 70’s.  See here.  And so was Newsweek. See here.  And the National Science Board.  See here.  And Science.  See here.  And several other sources summarized here.  We regret the error of putting the fake Time cover up.  However, the point we were trying to make remains valid.