From ac’s link:
“An ice core drilled from the island’s massive icecap between 1992 and 1993 shows a decided cooling off in the Western Settlement during the mid-fourteenth century.”
Greenland had warmer times recently, without AGW.
Of course, though, that doesn’t negate AGW theory.
I wasn’t trying to deny that Greenland cooled off after being a bit warmer and more hospitable; that was the Medieval Warm Period, after all. My comment was just about the indications that it was never THAT warm or THAT hospitable; calling it “Greenland” may have been one of history’s greatest bait-and-switch sell-jobs, particularly for the Vikings that followed Erik the Red there and survived what it threw at them.