From Amazon to Google, tech giants at the forefront of the AI boom are investing in companies building nuclear reactors and forming partnerships with energy providers to power their data centers. Many of these companies are generating energy through nuclear fission, which involves splitting atoms from elements like uranium and plutonium to release energy. It's cleaner than fossil fuels and more reliable than solar. But fission can release harmful radioactive waste that needs to be disposed of safely and mining uranium can have deleterious effects on the environment.