I just watched a documentary on the history channel about life in yhe world of 2100. It extrapolated trends that are in the works now and made some rather scary conclusions. Of course, I will be long gone but the world my great nieces will inherit will be a much poorer place. We can turn some things around but it would take some sacrifices which I don't think people are willing to do. No one wants to give up their cars, single family homes, food out of season, air conditioning, cheap gas, utility vehicles etc. I don't know what it would take for people to adopt a more green lifestyle. Probably some ecological disaster.
They envisioned ecological refugees as the climate changes, sea level rises, and drought spreads. It was a Mad Max type of world which would be survival of the fittest . I know that I would not last in such a world. The U.S fragments in such a world into feudal enclaves with the lucky ones inside and the others at the mercy of the elements and roving bands. Our present life would be seen as a forgotten utopia.