Well, we've all heard many ways of the world ending but, no one knows it'll be true or not. But there are limitless ways the earth could end, even right now as you're reading this. So I'd like to see what's going on according to you guys, personally I think the world will end over the sun's red giant phase. As it grows and grows and grows, it'll be impossible to bear the heat of the sun so close to the earth, eventually burning it up. If not, the supernova will absolutely wipe it from existence.

Rules.
Don't flame others' posts. They do not have a wrong answer, nor have a right one, the world can even end with aliens for Christ's sake.