As you may know, the Sun is a star and stars expand when they die. If Earth doesn't burn up first then the Sun will burn Earth up. A big, fiery, deadly wave will wash over Earth and thing will be constantly catching fire....including living things. Of course life on Earth (or at least people) will most likely be gone by then. The only thing that could possibly survive the death of the Sun is a Tardigrade or the "water bear" who can survive pure ice, lava, and even bare space!