In case you somehow missed the news, the world is supposed to end in December 2012, at least according to an ancient prediction by the Mayans. In the meantime, as you’re stockpiling food, water, weapons and other supplies, it might help to check out a few of these classic end-of-the-world books just so you’ll know what to expect when the end draws near. Seriously, doomsday literature is as old as the written word, but became more topical in the United States as the threat of a nuclear holocaust arose in the 1950s. Since then, many authors have found a way to end the world through nuclear war, disease, floods, meteor impacts, alien invasions and, yes, zombies. Here are 10 great doomsday books, covering a variety of scary scenarios.