The other, for me, is that the very same people screaming about global warming are the very same people, who in the 70's, screamed about the coming ice age. I believe it was even a cover piece on Newsweak.
Was an imminent Ice Age predicted in the '70's? No
The text of the Newsweek article you mention can be found on this site. I don't think it was on the cover.
I had three books written during that time about the coming ice age. They all had a lot of scientific facts and charts and graph. Very impressive and evidently very wrong.