I have an idea. We could build nuclear power plants on the coasts of our cooler regions (e.g. Alaska, Iceland, etc.) to ensure that the chances of overheating/natural disasters are significantly reduced. If we ran cooling coils through the ocean coasts in those regions, we would have not only a natural coolant, but also a way to quickly evaporate the water. Not only would there be zero pollutants (in this process, specifically), but it would kill two birds with one stone. If the heat from the coils "steamed" the water into large containers, we would have a method of cleanly converting salt water to fresh water. We would also have a relatively clean form of energy (i.e. nuclear). If we could recycle the nuclear waste, we would have a pretty solid system going.