It seems the question is not whether the polar caps are melting and whether sea levels will be rising but what the size of the effect will be. The current edition of Science Magazine features some alarming stories about this. The map above shows what’s left of Florida when the sea level rises by 6 meters (or 18 feet for people who still don’t get proper units). The red bits are under water. Similar maps show equally desastrous effects for cities like New York or London. For the tech savy, there’s a podcast.
Needless to say, none of this is going to have any effects on the fools that comprise large parts of the Republican Party. And why would it? Given they gave a damn when New Orleans got flooded why would they care about Florida or New York City?