Is the world gonna end, 2012?

It might. Most of the population might be wiped out, but the world will go on. What will happen is the poles will shift. The continents will move and oceans will shift. This will cause massive earthquakes and tidal waves. However, this is pure speculation. It probably won't end. Even if it will, you should spend your time living our life out to the fullest instead of worrying about the what-ifs.