Unclear on the concept: Michigan state climatologist Jeff Andresen tries to sell global warming fear by telling us that the Vikings settled Greenland when it was warm, then they "perished" when it cooled

Climate Change Report: As Michigan warms, cotton instead of cherry and grape crops? Bass instead of trout? Big rains and less snow? | Bridge Michigan

Climatologist Andresen offered a sobering lesson from the past.
About a thousand years ago, Vikings settled in Greenland at a time when the climate was favorable to agriculture. But with dramatic cooling that accompanied a climate shift known as the Little Ice Age, the Vikings failed to adapt.
“They perished,” Andresen said.