what global warming...the planet is cooling, page-56

http://en.wikipedia.org/wiki/Greenland
The name Greenland comes from Scandinavian settlers. In the Icelandic sagas, it is said that Norwegian-born Erik the Red was exiled from Iceland for murder. He, along with his extended family and thralls, set out in ships to find the land that was rumoured to be to the northwest. After settling there, he named the land Grænland ("Greenland").[7] Greenland was also called Gruntland ("Ground-land") and Engronelant (or Engroneland) on early maps. Whether green is an erroneous transcription of grunt ("ground"), which refers to shallow bays, or vice versa, is not known. It should also be noted, however, that the southern portion of Greenland (not covered by glacier) is indeed very green in the summer and was likely to have been even greener in Erik's time because of the Medieval Warm Period.