I've advocated that the only viable solution to Climate Change is free-markets and private property. Fundamentally there is an issue of pollution that is related to carbon emissions. If you want to reduce pollution, you have to make it such that people will respond to pollution rather than it being someone else's problem.

Do you want garbage in your water? No, go after the person up-stream. Sue him if need be. If you can't push past him, start cleaning the water yourself (there are many methods). Frankly, same goes with air pollution.

The Tragedy of the Commons guarantees pollution, so privatize the problem.