The US government assures citizens that the world is not going to end this December (as far as they know).

A blog on US.gov addresses our concern about the world ending on December 21. Not going to happen, they say... 

No need to freak out -- according to the article, "The world will not end on December 21, 2012, or any day in 2012." 

While this is reassuring, the part about "any day in 2012" makes me concerned for next year. Better be prepared then!