Question (Q): Are there any threats to the Earth in 2012? Many Internet websites say the world will end in December 2012.
Answer (A): Nothing bad will happen to the Earth in 2012. Our planet has been getting along just fine for more than 4 billion years, and credible scientists worldwide know of no threat associated with 2012.

Phew! The world isn't going anywhere on 12 21 2012, or so say NASA scientists.
The story of Doomsday has been blown to gigantic sizes and mostly on the grounds of the Mayan-Calendar-end saga. Besides this there have beens some scientific-looking ideas circulating around which substantiate the idea of Doomsday.

NASA has compiled a pretty interesting questionnaire featuring the views of its smarty pants. Its really interesting. Give it a go.