Greenland

The report that an ice core into the ground under the ice in Greenland turned up bits of plants seemed very odd. After all, most of Greenland's actual land is below sea level. If all its ice melted, Greenland would look like a lagoon--and it would take a long time for the land to rebound. That works both ways, of course--it takes time to subside. So when would there have been time to grow tundra?

The place the cores were drilled is part of the area that wouldn't be underwater, so I think it makes sense--probably the glaciers filled the lower areas and pushed outward, or just accumulated (almost a mile of ice on top of 400,000 to 1,000,000 year old landscape). Because this is fairly high up, it says something about the overall ice sheet but not everything.

BTW, scientists have been looking at this for a while: this is from 2014.