Global cooling was the big scare when I was in school. Yet, just a couple years ago the AGW alarmists were all scrambling to prove that it had never been the general trend: http://ossfoundation.us/projects/environment/global-warming/myths/global-cooling
(Connoley’s study on this used to be called ‘the definitive’ study proving that it was a myth that scientists were warning about global cooling in the 70s, but in lots of places on the internet, his work has now been memory holed).
Unfortunately for that claim, the evidence was still around: http://stevengoddard.wordpress.com/2013/05/21/the-1970s-ice-age-scare/
Unfortunately for us, we may be moving into a natural little ice age cycle.
You know that ice-bound expedition that had to be rescued from the iceblock they were trapped in? They were researching global warming- a fact that 98% of the news media failed to mention. Failing to mention it is bad enough, but some of them went so far as to lie to their readers, claiming they were ‘tourists.’