Climate...

 

The history of the scientific discovery of climate change began in the early 19th century when ice ages and other natural changes in paleoclimate were first suspected and the natural greenhouse effect was first identified.

the increase in atmospheric carbon between the onset of warming and the end of the 1800s was “small”, around 15 parts per million. But even this raised the temperature by a few tenths of a degree. The increase since 1900 has been more than 100 parts per million.

Paleoclimate temperature records were most famously analysed in the 1990s by US scientist Michael Mann to produce the “hockey stick” graph, which shocked the world with its dramatic depiction of the rapid recent rise in temperature after a millennia of relative stability

In a paleoclimatological first, the study incorporated not only land based sources like tree rings, but measured marine temperatures as well. The scientists found the land of the northern hemisphere and seas of the tropics began warming at roughly the same speed around 1830.

But the politicians mentioned it as if they are the one who discovered it last week. Just a thought.