The global cooling that they were ranting about 30 years ago was due to a nuclear winter, which would happen after a nuclear war. That never happened. Sorry, but the warming trend has been going on for at least 50 years.
If one theory is correct, we may be in deeper trouble than imagined. One theory states that we've actually been in an ice age since the 16th century, and we're coming out of it now. However, due to man's buring fuels, we haven't felt it. Since man is burning fossil fuels at a greater rate than ever before, we could see the polar ice caps melt faster than anticipated.
You Canadians may get to enjoy the 100+ degree F (40+degree C) summers we have here in Texas, while us Texans have to endure twice that.