The first sentence in this paper by Svante Arrhenius from *1896*

“A GREAT deal has been written on the influence of the absorption of the atmosphere upon the #climate”.

This paper was the first to quantify the contribution of CO2 to the greenhouse effect - over 126 years ago!

@Sheril It’s amazing how long we’ve been warned about the risk of climate change. In 1799 Alexander von Humboldt visited some agricultural fields that had once been forested area. He noted that the once huge lake had been diminished and the land surrounding it was much less healthy than the forested area. He warned that aggressive agricultural practices at large scale risked changing the climate to a dangerous degree.