One of the possible 2012 doomsday scenarios is the collision of a large meteor with Earth that could cause a mass extinction, and bring about the end of human civilization. 

Presented here are some essential points regarding the 2012 Doomsday Phenomenon. Within these main points are links to sources of evidence for a particular topic. 

One of the most important accomplishments and contributions of our Maya ancestors—for all humanity past and present—are their calendars.