And to your other point, it must be emphasized that oil and coal companies knew about it 40+ years ago, and chose to fund opposition research and disinformation instead.
https://en.m.wikipedia.org/wiki/ExxonMobil_climate_change_co... Exxon knew since the 1970s
http://www.climatefiles.com/coal/mining-congress-journal-aug... Choice quote from this article in a 1966 coal journal:
> If the future rate of increase continues as it is at the present, it has been predicted that, because the CO2 envelope reduces radiation, the temperature of the earth’s atmosphere will increase and that vast changes in the climates of the earth will result. Such changes in temperature will cause melting of the polar icecaps, which, in turn, would result in the inundation of many coastal cities, including New York and London.