Between about A.D. 800 to 1200 there was a period that is commonly called the Medieval Warm Period that was characterized by milder, warmer temperatures in Europe. The warming allowed for increased exploration...
the great warming

The Great Warming: A Green Book Review
(via ecolibris.blogspot.com)
Submitted by eyloni on Mon, 2008-05-12 23:20. | Tags: science | brian fagan | climate change | eco-libris | global warming | green books | history | the great warming