if the whole world ran on nuclear power, how long until we run out of the fuel needed for fission?

Question

Also I read somewhere that the waste products can now be re used, is that true?

In: Planetary Science

Answer 1

its hard to say and there are conflicting estimates, but if you just used uranium once, about 90-200 years with the current designes, but these designes also produce other fuels you can use in other reactor designs for about 1000-20000 years depending on what is actually possible and what is only theory.

if you use thorium reactors instead, you can pull 100000 years or so