Ten finalists have been announced for the US$20 million (€16.8 million) NRG COSIA Carbon XPRIZE, which awards efficient capture and use of carbon dioxide. They include projects to artificially photosynthesize CO₂ into methanol, a ‘machine’ to dissolve CO₂ into water and react it with brines to produce carbon carbonate and magnesium carbonate, the CarbonCure concrete system which has been covered in the Combustion Industry News before, two other concrete alternative materials, two nanomaterials, a fuel, and a bioplastic material called AirCarbon. Each of the finalists have been awarded US$500,000, with the remaining US$15 million to be split between the winners of the two tracks of the prize – implementation at a coal-fired power plant, and implementation at a gas-fired plant. It is well worth reading The Chemical Engineer’s short description of each project.