Nuclear energy is a form of power generation that harnesses the energy released from nuclear fission, typically using uranium or plutonium in reactors, or from nuclear fusion in experimental systems. It is valued for its ability to produce large amounts of electricity with minimal greenhouse gas emissions, making it a significant component of many countries’ energy strategies. Nuclear power plants operate worldwide, contributing to energy security and climate change mitigation, though they also raise concerns over safety, waste disposal, and proliferation risks.