A simple take on global warming

[confused2]

The distance from the North Pole to the equator (overland) is about 8,000 miles. The difference in temperature between the North Pole and the equator is about 80C which (conveniently) gives a temperature change of roughly 1C for every hundred miles north or south. So a 2C temperature rise (all else staying the same) would shift the US corn belt about 200 miles north.

Googling "Has the US corn belt moved?" gives a rather unreliable AI answer..

Yes, the US Corn Belt has shifted northwest since the 1950s, with its geographic mean moving over 200 km (120 miles).

So for a 2C rise in the northern hemisphere things that can't tolerate heat will have to move about 200 miles north and things that can't tolerate cold will be able to move 200 miles north. Locally seen as extinctions (panic!) and invasions (dreadful) but overall little effect on a country the size of America. For small islands without much 'north' the extinctions may be complete and the invasions undesirable.

Until relatively recently humans (eg  Europeans) have been able to migrate so earlier (human) responses to climate change may not work so well in the current situation. What does emerge is that for North Americans the appropriate response is  "I'm all right Jack".