It's this. If we got one of the molten salt reactor ideas functional it would be a total game changer for the economics of electrictity and the environment bec

It's this. If we got one of the molten salt reactor ideas functional it would be a total game changer for the economics of electrictity and the environment because they are not giant pipe bombs waiting to explode and their safety systems are extremely simple while being difficult to screw up (most spec a fan powered by the reactor blowing on a tube causing a solid plug. Reactor goes into failure mode and fan turns off, plug melts and everything flow into a second chamber designed to absorb all the neutrons and shut the reaction down. You end up with a mildly radioactive slab of rock that you can recycle in another running reactor. Also, since everything is liquid it makes continuous cycling and cleaning reaction products out much easier.