why don't we have a pole of super conducting material connecting a large body of water to space - thus creating free super cold water which can be used by power plants? apart from the logistics of getting a long enough pole and getting it to stand up, of course. theoretically, would it work? this theoretical pole could connect the ocean to space as well, thus reducing the temperature of the ocean - although you'd have to have the ability to disconnect it at will, or the whole ocean would freeze over!
