You must not have heard that the Vikings grew grain and grapes on "Greenland" during the 11th century. Only 1000 years ago the area's climate was much milder.
As the region thaws archaeologists will be able to learn more about their settlements. For now many areas are buried under ice and snow.
Climate change happens. We do not cause it nor can we prevent it. But if it's easier to believe the GW hype don't let facts get in the way of your blind faith.
The point you make is actually what I said earlier - Climate Changes happen as evident by Greenland. However, most here don’t even bother to acknowledge that.