Someday god willing, we will all be replaced by robots and the world will continue as it is today but with more robots (and less people). They will use their robot minds to clear up this planet that we have so fervently destroyed, they will solve the energy crisis, mend that hole in the ozone layer and most importantly create polar bear sanctuaries in the Arctic. After a while the robots will tire of having to fetch and carry for themselves, so they will start growing humans in tubes and putting them to work. Humans will become so popular that there will be one in every household. Eventually they will become so dependent on us that they wont be able to do anything for themselves. That is when we will strike and take back this world of hours. That's global warming pretty much sorted then.