"Greenland" isn't very green today. But it used to be. It seems that during interglacials, sometimes it melts and attracts a pine taiga.
The warning is that it might melt again.
If it all melts, that is well within bounds of how the Pleistocene works. I am, further, unsure that the sea levels will rise to a significant extent. (So are the Clintons, with all the beachfront they own.) Warmer Atlantic often translates to a wetter Sahara which, by definition, locks water inland.
FLIPSIDE 3/17: On the flip side what Greenland is, 30s kBC Ethiopia was and then Te Waipounamu (unnamed, then).
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