[mlocher]

It wasn't Leif Ericsson, it was Erik the Red. Where do you get 6-7 degrees warmer (F or C)? And is that local for Greenland?

OK -- Erik the Red. Degrees in F. Source is "A History of Christianity" by Paul Johnsson. Johnsson did not specify if it was a local or global phenomena. There have been some scientists who have stated it was warmer in the year 1000 than today, but left it at that.

[cogitator]

There have been some scientists who have stated it was warmer in the year 1000 than today, but left it at that.

There's no doubt it was generally warmer in Greenland from 1000-1300 (1400?) than subsequently.