Here's a link for you....

If you can, open up this pdf file. It's an article from Newsweek Magazine on Earth Day 30 years ago, warning about global cooling.

There are ominous signs that the Earth's weather patterns have begun to change dramatically and that these changes may portend a drastic decline in food production - with serious political implications for just about every nation on earth. The drop in food output could begin quite soon, perhaps only ten years from now. The regions destined to feel its impact are the great wheat-producing lands of Canada and the USSR in the north....

Isn't it amazing how people still believe environmental scare-mongering?