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Notorious Doomsday Prophets

December 21, 2012 -- the end date in the ancient Mayan calendar. Will it bring the Apocalypse? However you choose to characterize THE END, recent tsunamis, earthquakes, and revolutions certainly make the notion of impending global calamity seem feasible. But this isn't the first time society has entertained end-times speculation.

Click ahead to see some of the most notorious prophets and doomsday groups in history.

By Jennifer Leigh Parker
Posted 5 April 2011

Photo: Alan Powdrill | Getty Images