i dont think the world is about to completely end anytime soon. Whatever may happen i believe we will be able to adapt to it. no matter how bad we fuck up the world will be here until the sun burns up. What will happen soon is some sort of regression. Throughout history society takes huge advances, and then falls back some. Something like global warming, bird flu, or a nuclear war, i think, will not completely wipe out the entire world, but will definitlely set us back a hundred or so years, if not more.