What wiped out the Vikings on Greenland was that they tried to maintain their traditional crops from back home in a new environment and over the long haul, it wasn't working very well. They failed to adapt. They made the mistake of regarding the indigenous people (Inuit) with comtempt (not an unknown phenomenon) rather than taking note of how they managed (quite well, thank you) to survive and emulating them.

What straw man argument? Rarelamb was attempting to ascribe climate change on earth to sunspot activity. I was merely informing him of the actual facts about sunspot activity. The eleven year sunspot cycle has long since been established as having no effect on the earth's weather. That's rarelamb's red herring, not my straw man.

Don Firth