Nuclear doesn't ravage fish and watersheds either!
It's not the harmless cure-all that it's made out to be here at times.
edit: that said, CO2 levels are an immediate planetary crisis and nuclear is a tool we can and should use to mitigate it.
Waste storage can be handled quite easily by reprocessing fuel, the waste is very small in comparison to other types of energy. There's little to no relationship to arms proliferation, that's only a very specific type of reactor and fuel that's not in general use for nuclear power.
And finally there's a lot of water on the planet. Cooling isn't a difficult problem.
The bigger problem is that reactor research has essentially been stopped due to nimby problems, so we don't even know how much better we could make nuclear power.
"Hanford also hosts a commercial nuclear power plant, the Columbia Generating Station, and various centers for scientific research and development, such as the Pacific Northwest National Laboratory and the LIGO Hanford Observatory. "