Fact: Five thousand years ago, the Mayans carved thirteen crystal skulls. Fact: To protect humankind, they sent them to the four corners of the globe. Fact: They gave a precise date for when they thought the world would end: 21 December 2012. Fact: They said that this time the destruction will be of man's making. Fact: Only when all thirteen skulls are reunited can the world be saved from its fate. For the last 500…