How does 2012 relate to a zombie apocalypse? Certainly our world could be forever changed on this date by an unnoticed eschatological asteroid, disease or terrible quaking of the earth.
The walking dead? Also plausible. Current scientific research into disease, reanimation and cellular re-genesis is progressing as rapidly as other scientific disciplines.
Particularly terrifying is the reanimation of the 1918 Spanish influenza virus, responsible for a pandemic that killed an estimated 20 million people.
The viral resurrection is brought about for research and a vaccine against itself – which of course has already been eradicated – and the virus is being harvested from corpses.
Disease ridden walking corpses are one thing. Reanimating brain-dead humans has been discussed before and is a very real possibility.Restoring a human from a cryogenic stasis and reanimating their dying brain tissue yields the possibility that a human may not be the same as they were when they expired.
This leaves much speculation as to a reanimated form of a human being, but combined with the virii and diseases mentioned above – you get the idea – WE MAY BE TAKEN OVER (attempted to be?) BY ZOMBIES.