One thought that comes to my mind is Bucky's idea of covering entire cities with mega Geodesic domes. We can use these Geodesic domes to control the temperature of the city. Keep it cool at a good temperature through out the year without using a lot of energy.
http://buckminster.info/Ideas/08-Ico...ntownCover.htm
Another thought that comes to mind is the technology created that makes it rain anywhere anytime by sprinkling a powder in the air.
Using load balancing techniques have been very effective for sky scrapers in earth quake zone areas.
How to prevent against hurricanes and tsunamis?