Molten Salt Reactors (MSRs) are a type of nuclear reactor that use liquid salt as both a coolant and a fuel solvent. This design allows for higher operating temperatures and improved thermal efficiency compared to traditional reactors. The molten salt can dissolve nuclear fuel, which enhances safety and reduces the risk of meltdown. MSRs can utilize various fuels, including thorium and uranium, and they produce less long-lived radioactive waste. Their design also allows for continuous fuel recycling, making them a potentially sustainable option for future energy production. Overall, MSRs offer a promising alternative in the field of nuclear energy.