In article ,
Nick G writes:
[quoting Gavin Staples]
2C warmer than it is now. Unfortuntaley there is no way of finding out.

Are you sure? 2C warmer; globally?, where is your evidence?

I don't know about 2C, and globally would be an exaggeration. But it was
certainly warmer in the Middle Ages than it is now in Europe, the North
Atlantic, much of the Arctic and North America. The Pacific Ocean and
its border regions seem to have missed out on this warm period. I say
"now", but the degree of warming over the last couple of decades must be
getting us very closer to that level of medieval warmth.

There's plenty of evidence, not least that the Vikings were able to
successfully establish permanent settlements in the southern coastal
areas of Greenland, which failed some centuries later when the climate
turned colder. If you are interested, I can recommend HH Lamb's
"Climate, History and the Modern World", published by Methuen in 1982. I
dare say that a second-hand copy might be obtainable through
amazon.co.uk
--
John Hall
"Sir, I have found you an argument;
but I am not obliged to find you an understanding."
Dr Samuel Johnson (1709-1784)