Do yo think the world would end on God's account?

Never really did believe the whole 'the world is ending in twenty-twelve' soon-to-be-fiasco . . . but does anyone think Earth has an expiration date? Perhaps one day the Earth would end due to the human activities that trigger Global Warming and the ozone laying is getting smaller . . . what do you think? Would it happen because of God's will? Do you believe in the existence of God and the miraculous events that occured in the past that was the proof of that?