For anyone hoping to reboot the nuclear power sector as a source of zero-carbon energy in the age of climate change, the news has not been good. On Feb. 28, the staff of the U.S. Nuclear Regulatory Commission (NRC) forwarded a proposed licensing framework for next-generation reactors to the agency’s five politically appointed commissioners. That proposal came little more than a year after the NRC summarily rejected Oklo Power’s license application for its Aurora reactor. The application was the first attempt to obtain a license to operate an advanced nuclear reactor in the United States.