2012

There are several different reasons people believe the world is going to end in the year 2012.
One theory includes sunspots. It is predicted there will be a large number of sunspots (the sun burps) in 2012, which will send solar particles at the earth. If a large amount of sunspots occur simultaneously, the amount of solar particles traveling towards earth will be too much for Earth's atmosphere to handle, which would result in the end of the world.
Another belief is the Earth's magnetic poles will switch. If the north pole and south pole switch, this will cause everything to be pulled together. Although this happens rarely, there is evidence it has happened throughout the Earth's history.
Comets is another explanation of why people believe the earth could end in 2012.
A large comet could hit earth causing mass destruction around the surface of the world including flooding, burning, or massive shaking. This would obviously create a problem for humans, and could wipe out all life, although the likelihood of this happening is very low.
The final theory is possibly the most common one which people believe in. The Mayan calander is set to end on December 21, 2012. The Mayans were known for being advanced for their time, and have found other things in the world to be true. People are very intrigued by this, and the Mayan culture and civilization has been throughy studied.
Without a doubt, the world will eventually come to an end. Many people believed it would be at the turn of the new millennium in 2000, but of course this did not happen. There is little humans can do to stop the end of the world, so enjoy life as it comes.