A rather interesting and unusual review article. It describes how superconductivity and superconductors can actually help in improving our environment. As stated in this PhysicsWorld blog, it is an unusual assertion because "... superconductors only work at very low temperatures and lots of energy is needed to cool them.. "
Still, you might want to check out the list of things that have been argued that superconductors can do to help with the environment. The review paper is available for free.