My comment is about the cover art… that’s not what NYC would look like after 50 feet of sea rise… I believe it would more realistically look exactly the same as it does now. I predict that tall buildings will simply move their entrances up 5 stories, and smaller buildings will be jacked up, and everything will be filled in to match the existing outlines of things. Fill is cheap, and it’s been done before, in Galveston Texas, for example. Even Chicago sits on about 11 feet of fill, just to make it less swampy.