Science fiction teems with harrowing dystopic visions of a tomorrow far worse than today for any number of reasons: viral outbreak, world war, alien invasion, zombies. And in honor of Green Week, here are some of the most inhospitable, which remind us of the necessity of being green ... and knowing how to field-strip a Colt. 45.
Of course, there can be the occasional upside: You'll have a little breathing room in I Am Legend's abandoned Manhattan, and I hear they throw a rockin' rave in Doomsday's virus-happy Scotland. But, by and large, this is a catalog of realities you'd be better off avoiding.