Thereare dozens of theories about how this might happen. Some claim that2012 is when the Earth will experience a polar shift.Others say that after 2012, the Earth will experience a period ofterrible destruction followed by a new age of peace and enlightenment.A few claim that in 2012, a secret government will accomplish its goalof total world domination. What will actually happen? Check back withus (HowStuffWorks) on Jan. 1, 2013.
Stephen Sweet/Dreamstime
A traditional Mayan calendar
