By chemistry and alchemy. Chemistry: also known as reprocessing [1]. A lot of the nuclear waste is uranium and plutonium, that can be separated and made into n

By chemistry and alchemy. Chemistry: also known as reprocessing [1]. A lot of the nuclear waste is uranium and plutonium, that can be separated and made into nuclear fuel, and put back to work. The side-effect is that the amount of waste is reduced. In principle, chemical separation can be further used to separate the more dangerous isotopes (the ones with half-lives of more than 5 years) from the short-lived isotopes, which will decay naturally in a reasonable amount of time (<100 years). Alchemy: nuclear transmutation. This can be achieved via bombardment with neutrons. The most efficient way to do that is with a breeder-reactor [2]. [1] https://en.wikipedia.org/wiki/Nuclear_reprocessing https://en.wikipedia.org/wiki/Nuclear_reprocessing [2]https://en.wikipedia.org/wiki/Breeder_reactor#Waste_reduction https://en.wikipedia.org/wiki/Breeder_reactor#Waste_reductio...