Well on 12-21-12, the mayan calendar ends, thus people think the world is gonna end, but I read that all the ending of the calendar really means is something big is gonna happen, most of anything els is just speculation. What does that mean though? it could maybe, instead of the world ending, mean that maybe it signifies a time of great change amongst the people of the earth, be it a "thinning" of the population through disease or what not. or maybe it means the time when we finally decided to start taking care of the earth, and eachother, and in thousands of years when we colonize new planets people would look back, and say that was the year, or the time, or the day, when our ancestors made the change that saved civilization.
just food for thought. i personally dont think anything is going to happen.