if we don't stop polluting the planet and turning it into a toxic toliet bowl. Someone invent the Warp-Drive so we can get out of here and colonize another planet.
Gee, in 500 million years, when the sun gets hotter, do you think we can move to Mars or one of Jupiter's moons because it will be hotter there as well? Just create greenhouse bubble domes to live in, and Terraform the land on the bottom of them to grow trees, food, and other stuff.