Certainly the world will end when the sun expands to a red giant star, engulfing the planet, about 5 billion years or so from now. Give or take a few million years. If by chance, as the sun will have lost a good portion of its mass, the Earth's orbit is pushed out, it is likely have its oceans and most of the atmosphere boiled off. The world will still be there then, but will be quite different.
A lot of things will happen between now and then, including perhaps the extinction of
Homo sapiens sapiens.
Edited by Insanity, 01 January 2013 - 03:30 PM.
We see things only as we are constructed to see them, and can gain no idea of their absolute nature.
With five feeble senses we pretend to comprehend the boundlessly complex cosmos. - H.P. Lovecraft, "From Beyond" Published 1934