It's The End Of TheWorld (or maybe not).

I have had no less than a dozen people tell me the poles would shift, or the world would end in 2012. I do intend to one day write an entry on it, but until that time, let's see what our friends at NASA think.
http://astrobiology.nasa.gov/ask-an-astrobiologist/intro/nibiru-and-doomsday-2012-questions-and-answers
Check it out.