It seems every year the world is facing an apocalypse, the end of the world. So far so good: we’re still here. In 1910, when Haley’s Comet was coming, scientists thought it would be the end. In 1997, Heaven’s Gate thought an alien ship was following a comet. One of the biggest recently was Y2k: that was supposed to happened on January 1, 2000. Most recently, two years ago, the end of the Mayan calendar was supposed to be the end the world.