The Loehle graph at your link is very interesting. It clearly shows the drop in temperature at the Maunder Minimum and the other low sun spot activity periods. I presume we don’t have any really good data on sun spots during the Medieval Warm Period. If the west Antarctic ice cover is again going to melt to the degree it did during the MWP, how much sea level rise can we expect from that? While we may not be facing total disaster, some cities such as New Orleans, and countries like Bangldesh are in big trouble with only a few feet rise in sea.
On a separate note, I read that during the MWP the scattered lords would have a circular tower Donjohn(sp) in which everyone slept with a fire in the center and a few curtains for privacy. With the coming of colder weather, the lords began to build private heatable rooms. This caused a change in political dynamics. The lords were no longer so close to the people, did not undertand their problems as well, and became more “lordly” with attendant political problems. So we need to make our politicians sleep with their constituents!! ;-)