death of earth?

i believe that all things eventually come to an end and some evolve, as for earth yea i do belive one day it wont be here anymore the earth is forever evolving, from the continents slowly drifting apart more and more to the ozone layer and i remember a few years ago i can't remember if it was the discovery channel or what but they had predicted within the next 15-20 million years the sun will get so close to the earth that life here would be impossible