Speaking of the horrific consequences of nuclear weapons testing in the Pacific, a big one that's still with us today is the knee-jerk phobia of nuclear power, often by people who can't distinguish between the two.
Along with wind and solar, nuclear power is one of our chief tools to mitigate global warming, which will in the long term prove to be far worse than weapons testing.
It sure doesn't help that the US government lied through its teeth about atmospheric testing. I've been trying to find a copy of Joseph Rotblat's paper deducing that most of the yield of the Ivy Mike and Castle Bravo tests came from the fast fission of the U-238 tamper, revealing as a lie the government's claim that fusion bombs were inherently clean. Anybody know where I can find a copy?