Read up on that because what SUPPOSE to happen is that all the planets are going to align in a straight line which will change the rotation of the earth. We are spinning on a horizontal axis and it might change due to the alignment of all the planets. The Mayans have predicted many big incidents in the past, some are correct and some aren't. But I don't believe it will be the end of the world. I can see that happening because of our O-zone layer deteriorating. Other than that, I don't see anything to be afraid of. Even if I'm wrong, don't let 2012 scare you. Just live your life like normal, it isn't worth living the rest of your life worrying about the end of the world.