|From you know who.|
But with the government and the green movement increasing their efforts to slime and smear those who point to the actual science, like this, as akin to the Luddites motivated by fear and anger, it is important for people to step back and consider just how incomplete our understanding of how the climate works is, and just how great the uncertainties are.
This ultimately relates to the now infamous Hockey Stick, which purported to show a thousand years of relatively constant climate before the middle of the 19th Century.
So you can see why they fiddled with the graph to remove the "inconvenient" data.
The still best explanation of the scientific fraud lying behind the Hockey Stick and how it was, against the will and active interference of much of the climate science establishment, exposed is this.