Revision of Earlier Global Warming Post

An internet acquaintance pointed out to me that my reference for Greenland settlements is from a site that also has "hollow earth" speculation (which, as a retired Arctic surveyor, it took him a single paragraph to demolish). Therefore, I offer these references as somewhat more firmly grounded:

The Fate of Greenland's Vikings

It's not going to be cold enough in Siberia to...
(search 'wheat')

THE GREENLAND QUESTION

Summing Up the Junk Science

Orbiting Vaporizer Joe

Greenland Green Again?
(Tongue-in-cheek, but relevant)

Climate change: The crack of doom?
(Read the discussion below the article)