ENERGY: China brings world’s first Generation IV nuclear reactor online. “Generation IV reactors are the latest, long-anticipated nuclear power plants that promise to be cheaper, safer, and more efficient than the current reactors. They’re called Generation IV because Generation I were the first experimental reactors, Generation II were the first commercial reactors, Generation III were improved versions of Gen II, and Generation IV are the future reactors that incorporate new technologies, fuels, and basic designs.”