Only God knows when the World will end - but with all thats happened in the last week...it makes you wonder.
I believe that God is warning us - and what happens on 12/21/12 will depend on how we react to his warnings - this being my thoughts only.
One part of the world will experience Dec 21 2012 before the rest of the earth... I guess we'll have to wait and see what happens.
I try to do what is best and help where I can, and never leave any pain in my path.