Do all successful reactors melt down? Sorry that wasn’t fair, but I think you can agree that a melt down can hardly be considered a success just because it didn’t fail as badly as Chornobyl :D

Nuclear Power is generally safe, on this we agree, I just think you are letting your feelings about the scary soviets affect your opinions about what was a genuinely sad event which should not be made light of.

Overfishing does not sound like salmon ladders failing to me, it sounds like a very obvious failure of capitalism and the greed it inevitably engenders. Have a great night <3