I read an interesting article a while back on making reactors safe using helium gas: https://www.cfact.org/2011/03/17/nuclear-safety-reactors-that-cant-meltdow

I read an interesting article a while back on making reactors safe using helium gas: https://www.cfact.org/2011/03/17/nuclear-safety-reactors-that-cant-meltdown/ https://www.cfact.org/2011/03/17/nuclear-safety-reactors-tha... Personally I'm not terribly worried about meltdowns but rather terrorist getting hold of the waste and making dirty bombs but even that seems fairly unlikely (that is the pros outweigh the cons given todays technology).