re: #474 Unakite

I would add that the damn Vikings were in Greenland over a millennium ago becausethe climate was a lot warmer and THERE WERE NO pig farms in Texas or cattle ranches in South America or factories or traffic jams (and the world population was significantly smaller than it is now). Not being there at the time, I assume that glaciers were smaller then, too, and they survived. Guess what. They did not leave Greenland because of global warming and rising sea levels. They left because of Global cooling!

Respectfully, how does it follow from that that the things I mentioned have no effect?