In Mark Steyn's delusional view, Europe's regional "medieval warm period " was hot enough for Vikings to make to make wine in Greenland.
He has dismissed global warming as a hoax on the grounds that vines no longer grew as far north as the Medieval vineyards of England's Eli cathedral.
Except that they do. Steyn's reflexive denial of the consequences of the Industrial Revolution has made him the laughing stock of British winemakers.
Thanks to the amplification of global warming by long summer days at high latitudes, wine making has in recent decades marched north clear through Northumbria and Scotland to the Outer Hebrides!
Not to be outdone, the Viking's descendants are now making wine in Telemark, a Norwegian region better known for inventing skis than growing fruit
Here's a tasting of recent vintages from the Danish border to the edge of the Arctic Circle:
