Ok, so I honestly don't believe anything is going to happen on December 21st, but maybe something will, and in that case I would like to be fullly prepared sooo, how do you think the world's gonna end, and what steps can we take to survive it? I personally think that the worst that could happen is a meteor strike, and we can survive that by living underground.
Nothing will happen. And here is why. When the Mayans were making their caculations/predictions, they didn't have leap year to take into account. The day that they thought would be 12-21-12 has actually already passed!
Nothing will happen the 21st. There's already a whole bunch of scientific proof that the world won't end at all. I just see it as a beginning of a new era. Just think of it as us having milleniums? ^^