While researching the 2012 end-date of the Maya Calendar, John Major Jenkins decoded the Maya's galactic cosmology. The Maya discovered that the periodic alignment of the Sun with the center of the Milky Way galaxy is the formative influence on human evolution. These alignments also define a series of World Ages. The fourth age ends on December 21, 2012, when an epoch chapter in human history will come to an end. <em>Maya Cosmogenisis 2012 </em>reveals the Maya's insight into the cyclic nature of time, and prepares us for our own cosmogenesis--the birth of a new world.