So should we all be preparing for imminent apocalypse? According to the scholars, no.

The ancient Maya are usually cited as the predictors of the world coming to an end this month: One of their "great cycles" supposedly ends now. But the Maya were brilliant mathematicians and fantastic record keepers. They didn't have just one calendar. They developed many different kinds, including a cyclical solar calendar and a sacred almanac. They also measured time with something known as the Long Count, which were great cycles of 5,000 years.

Somewhere along the way a rumor spread about the current great cycle, indicating it ends on December 21, 2012. This sparked the belief among some that the last of our days are upon us.

It's