...Which ended about 10,000 years ago? I hope not, because that would be really dumb.
And who cares about whether Vikings were able to grow (or import?) corn in Greenland during the Medieval Warm Period? The whole point of Baron’s post was to deny the need for any concern - at all - that we might be setting ourselves up for difficult problems in the future. Go right ahead and console yourself with the belief that there is some sort of magical and undiscovered natural CO2 sink that will solve all our problems. It’s a free country, and this issue certainly demonstrates the lengths to which people are willing to go, on both sides, to justify their beliefs.