That's at least how long C02 emmissions have been recognised as a pressing problem and how long those making Texas Oil baron profits (globally, not just in Texas) have been delibrately confusing the issue to avoid doing anything to slow emmissions.

The first sound thoughts on the matter were over a century past, rightly speculating on the consequences of putting more blankets on the bed (ie: more insulating gases in the atmosphere), and the first solid atmospheric geophysics paper on C02 and warming dates back to 1967.

The "aww, but an ice age" stuff is just a distraction for the kiddies.

If anything, that stuff really highlights the issue as assuming "all things being the same" the planet probably should be headed back into more glaciation (we're already in an "ice age" - the poles have ice; we're in an age of cyclic glaciation) .. except it isn't.

Humans have not only stopped the expected advance of glaciers, we've added enough insulation to reverse them and start to heat up our "sweet spot" of the ages in which human civilisation developed.

"Beginning 195,000 years ago, the global climate entered a period of cold and dry conditions that lasted for 70,000 years, a phase called Marine Isotope Stage 6. In interior Africa, this shift triggered drought conditions so severe that much of the continent would have become uninhabitable. Genetic studies of modern human DNA tell us that at some point during this period, human populations plummeted from more than 10,000 breeding individuals to as few as 600. Homo sapiens became a highly endangered species; we almost went extinct. This “population bottleneck” means that all humans alive today are descended from this tiny group of survivors. The result: our species has less genetic diversity than a single troupe of West Africa chimpanzees." (https://www.cbc.ca/greathumanodyssey/content/iceage/135k/ind...)