The term “global warming” appeared for the first time in 1975
The term “global warming” appeared for the first time in print on August 8, 1975, with the publication of Wallace Smith Broecker’s paper “Climatic Change: Are We on the Brink of a Pronounced Global Warming?” in the journal Science.
Broecker argued that there was an increasingly likely scenario for this to happen: the ongoing rise of atmospheric carbon dioxide content created by fossil fuel emissions would soon begin to warm the planet, in turn warming surface waters in the ocean and melting ice into fresh water. This would reduce the waters’ density, thereby preventing cold water from sinking, altering ocean currents and effectively shutting off the conveyor belt. If that were to happen, he postulated, Europe would grow cooler as it did during the Ice Age. The more disruptive effect would come from unpredictable “on-and-off flickers” in global temperature. As Broecker put it in 1998, “the climate system is an angry beast and we are poking it with sticks.”
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