Not a big enough fan of toxic waste to get behind Nuclear Power. Especially when hearing about how the waste water is going to be handled at Fukushima, the biggest reactor disaster since Chernobyl.
Not sure the criteria for best, but apparently a, “a controlled environmental release is said to be the best way to treat low-tritium-concentration water.”
The strategy of using “controlled environmental releases” worked great for plastics in the ocean.
Diesel trucks are also pretty good at “controlled environmental release”