>>>> It was a thing in modern science since the 1940s. The reason it took so long was that scientists couldn't agree whether the Earth was cooling or warming.

>>>> It was a thing in modern science since the 1940s. The reason it took so long was that scientists couldn't agree whether the Earth was cooling or warming. In the 1960's and 70's they were sure it was cooling. http://web.archive.org/web/20060812025725/http://time-proxy.yaga.com/time/archive/printout/0,23657,944914,00.html http://web.archive.org/web/20060812025725/http://time-proxy.... "when meteorologists take an average of temperatures around the globe they find that the atmosphere has been growing gradually cooler for the past three decades. The trend shows no indication of reversing. Climatological Cassandras are becoming increasingly apprehensive, for the weather aberrations they are studying may be the harbinger of another ice age." Another interesting video from the Leonard Nimoy series "In Search Of" about the coming Ice Age: https://www.youtube.com/watch?v=KK0RswGQZRw https://www.youtube.com/watch?v=KK0RswGQZRw By the 1990's apparently all the evidence suddenly shifted and then it was then shown the Earth was warming. It would seem the scientific community can't seem to get one consensus as to whether it is cooling or warming.