What will happen on December 21, 2012?

i have heard a lot regarding "December 21, 2012" ..What will happen on that day.
some where (in a reputed website) i read that ......According to scientists and technologists something strange is happening behind the scene. The terrestrial and solar polar reversal peaks are coming within three weeks of that day, December 21, 2012. Innumerable UFOs are scouting our skies regularly and increasing as we approach that day. The tectonic plate shifts, underwater volcanoes, earthquakes, landslides and Tsunamis are increasing at rates never seen before. The solar flares are increasing. The earth’s magnetosphere and ionosphere are experiencing strange disturbances. The numbers of typhoons and cyclones have increased many folds. The number of floods and droughts has increased beyond imaginations in the last ten years.
The biggest clue to what will happen comes from astrophysicists. There is a big possibility that the simultaneous polar reversal in earth and sun will throw the solar system out of whack. That will cause massive upheaval in the earth. At that point of time, the extraterrestrials will officially show up and put “cosmic seat belts” around us as they apply the superpower of the Hyperspace to bring the solar system back to what it is today.
but that is all about rubbish because no one can claim thai it will @ 21st of Dec 2012, why not one day ahead and before. i believe on Allah in this way i can say it is all about mis conception, it is not going to realize. but one thing i want tell you all we have to think about our earth, why we destroy its nature & cycle.
forward all information regarding 2012 @
asifboy@gmail.com