The UK government has released regulatory consultation proposals for the regulation of future nuclear fusion technology and power plant design, development, construction and operation. These were contained in a document called the Fusion Green Paper, which was published on Friday. The public and industry have until December 24 this year to submit their comments, suggestions, concerns and other responses to the proposals. Whereas nuclear fission (used in all existing nuclear power plants) releases energy by splitting atoms, nuclear fusion releases energy by smashing together atoms (specifically, hydrogen atoms). Fusion is the process that fuels the Sun and all other stars. Fusion would not have issues fission has, such as having to store and reprocess spent fuel, or having to deal, after decommissioning, with large and highly radioactive components. The main waste product from fusion would be (non-radioactive) water.