Currently from now until year 2100, overall safety-wise, thorium nuclear is very promising. It does not operate under the higher pressures of uranium, shutdowns are far more agreeable. Economics at scale, cost, years to profit, have stagnated its progress.

https://www.world-nuclear-news.org/Articles/Indian-test-reactor-reaches-operation-landmark

https://whatisnuclear.com/thorium.html

Year 2100+, we should be extracting uranium from ocean waters as it's more economic at scale, more bountiful than trying to dig it from the earth's crust. Technologies from extraction methods should be more readily accessible then.

https://spectrum.ieee.org/uranium-from-seawater

Reading through this thread makes me sad, that people still fear the backlash from the downfalls of nuclear. Yes, it's worries are understandable. But people gotta start realizing sooner or later, Tesla's free energy isn't walking through the door. Solar, wind, coal, isn't cutting it in terms of efficiency, cost, or in coal's case, appeasing to the silly whimsicals of lefties. Nuclear is the definitively, the only studied option for the foreseeable future of mankind.

If people are worried about terrorist threats to offshore nuke plants, a single destroyer is more than enough to patrol its safety.