After realizing that the temperature was permanently going up, Chicago got a brilliant idea... put up infrastructures on skyscrapers. These won't be enough to stop it altogether, but it will help. If more cities could put more money int putting these kinds of things up, then the atmosphere would just be a wee bit cleaner. We could even make these on houses, apartments, and even service buildings. If we have them on apartments, it would make a great place for people to hang and encourage them to not be using the computer or whatever else they're doing.
More at http://www.popsci.com/environment/article/2011-05/preparing-climate-change-chicago-adapting-itself-warmer-weather