Humanity needs to stop wasting public money on nuclear investment, and invest it in renewables. Especially decarbonizing proven renewable tech. Figuring out how to build and maintain renewable generation without energy and byproducts (plastics, etc) from fossil fuels is an important area of experimentation in itself.
Don't believe the hype. Thorium MSRs (Molten Salt Reactors) are less dangerous than standard uranium reactors, because they can't melt down, and they can't produce weapons grade nuclear materials. But still dangerous, producing radioactive wastes with half-lives in the hundreds of thousands of years;
https://www.theguardian.com/environment/2011/jun/23/thorium-nuclear-uranium
We can scale up proven renewable tech, and probably develop new ones, far faster for the same investment, without the waste issues.