If you believe the Mayan's "prophecy" of the world ending, or Planet X/Nibiru coming to smash into us, or a Solar Flare melting us, read these articles.

Here's a nice little quote to think about before you read.

"…when a calendar comes to the end of a cycle, it just rolls over into the next cycle. In our Western society, every year 31 December is followed, not by the End of the World, but by 1 January. So 13.0.0.0.0 in the Mayan calendar will be followed by 0.0.0.0.1 - or good-ol' 22 December 2012, with only a few shopping days left to Christmas." - Excerpt from Dr Karl's "Great Moments in Science".
No Doomsday In 2012
No Planet X
Planet X Is Not Nibiru
No Killer Solar Flare