I didn't make it past the first paragraph. When he started talking about how the change in temperature of a few tenths of a degree over time is perceived by climate science to be a disaster when daily temperature swings of tens of degrees are routine, I knew he was a quack.

A better analogy would be if the temperature of a human being went up four degrees and stayed there, the person would die. A few degrees is all it takes.

Let me tell you a story. Climate scientists are horrified that the permafrost in the upper latitudes is melting permiting methane to escape into the atmosphere which further warms the upper latitudes allowing even more methane to leak. (Depending on what article you read, methane is 20 to 25 times more efficient at trapping heat than CO2).

Once we get on the other side of that threshold, and we don't know where that threshold is, there's no turning this around. It's what they call a positive feedback loop - a self sustaining engine. And that's just one tipping point of dozens.

Arctic permafrost leaking methane at record levels, figures show | Environment | guardian.co.uk