A liquid fluoride thorium reactor (LFTR) is a type of nuclear reactor that uses a special liquid called thorium fluoride to fuel the reactor. This liquid is made up of the element thorium and fluoride salts. The thorium reacts with the neutrons in the reactor, which releases energy as heat. The heat is used to create steam, which is used to turn turbines in order to generate electricity. LFTRs are safer than other nuclear reactor designs because the liquid can't overheat, and it can be easily cooled if something goes wrong. They also produce very little nuclear waste compared to other reactors, which could make them a better choice for producing clean energy.