From The Guardian on Earth Day:
Seventy-five years ago this month an amateur weather-watcher from West Sussex published a landmark paper in the Quarterly Journal of the Royal Meteorological Society directly linking the burning of fossil fuels to the warming of the Earth’s atmosphere.
Guy Callendar was a successful steam engineer by trade, but in his spare time he was a keen meteorologist. In April 1938, his paper, “The artificial production of carbon dioxide and its influence on temperature” (pdf), which built on the earlier work of John Tyndall and Svante Arrhenius, was published with little fanfare or impact. It was only in the proceeding decades that the true significance of his conclusions would be heralded.
But Callendar concluded:
In conclusion it may be said that the combustion of fossil fuel, whether it be peat from the surface or oil from 10,000 feet below, is likely to prove beneficial to mankind in several ways, besides the provision of heat and power. For instance the above mentioned small increases of mean temperature would be important at the northern margin of cultivation, and the growth of favourably situated plants is directly proportional to the carbon dioxide pressure (Brown and Escombe, 1905): In any case the return of the deadly glaciers should be delayed indefinitely.
As regards the reserves of fuel these would be sufficient to give at least ten times as much carbon dioxide as there is in the air at present.