The document summarizes predictions from various sources that the world will end on December 21, 2012. It cites predictions from the Mayan calendar, Aztec calendar, prophecies of Nostradamus, the Bible, and indigenous peoples like the Hopi that all point to cataclysmic events occurring on this date, including catastrophic flooding, polar shifts, droughts, and alignment of the sun with the black hole at the center of the Milky Way galaxy. The document argues that scientists now agree these predictions could cause effects on Earth and that skeptics should not ignore warnings from ancient cultures that demonstrated advanced knowledge of astronomy and mathematics.