Thorium is much cheeper then uranium and much safer but small movement to this side
https://www.nbcnews.com/mach/science/have-physicists-found-key-safer-nuclear-power-ncna796616
Thorium-salt reactors could make nuclear power even more effective — and the benefits of being potentially meltdown-free and difficult weaponize are added safety perks that we’d all love to have.