That's an extremely uncharitable and snarky answer given the open-ended nature of my question.
Thorium reactors don't use either and a fusion reactor wouldn't involve any isotope of uranium. Others may disagree, but I don't think it's a forgone conclusion that all R&D in nuclear energy grinds to a halt.
I disagree with the GP's claim that poverty is "the only way to reduce greenhouse gas emissions by 55%."
