Here are five different tales of the end of the world. Some methods are long, drawn-out affairs, others threaten us in the blink of an eye. Even if our take on Mayan calendars was all misinterpretation, there are plenty of other terrors that we could fall prey to. Self-launched bombs, asteroid from space, rain of fire, alien invasion, or virus and pandemic? Maybe it's none of those. Maybe it's giant lobsters. Or zombies. Some of these stories are...