Nuclear furnaces are reactors that generate heat by nuclear fission. Synonyms for nuclear furnaces include atomic reactors, nuclear power plants, and nuclear reactors. These terms are interchangeable when referring to facilities designed to generate nuclear energy, but may have slightly different connotations. Nuclear power plants and atomic reactors are more commonly used in the United States, while nuclear reactors is the more commonly used term internationally. Regardless of the name, nuclear furnaces are incredibly complex and require careful management to ensure safety and efficiency. The debate around nuclear energy continues, but it remains an important source of electricity around the world.