NASA disputes Mayan end of world claims

NASA keeps an information webpage dealing with December 21 predictions.  They say that all of the doomsday scenarios are not in any way even possible...no planet is on a collision course with Earth, no extreme solar flares, no reversal of the Earth's magnetic field, no falling into a black hole, and certainly no complete blackouts of the entire planet.  Their concern is the people (especially impressionable youngsters) who believe the prophecy and thus could do something to harm themselves.  A scientist at NASA says, "The greatest threat to earth in 2012, at the end of this year and in the future, is just from the human race itself."  Dec 21