Summary

I thought a lot about different answers to this question, some more realistic than others. I thought about exploiting other planets, use their recourses when our on have come to an end. I thought about using the power in the beams of the sun in a more efficient way, since that is a source of energy that probably not will end during the human era. I thought about gen modify animals and plants, make them more sustainable to the changes of the climate. Enable them to live and grow in the hot desert and at the cold mountains.