The U.S. and 21 other countries want to triple the global generation capacity of nuclear power by mid-century. The pledge, announced at the United Nations’ COP28 climate summit in Dubai in the United Arab Emirates, comes as more of the world’s governments say increased use of nuclear power is critical to reduce emissions of carbon and combat climate change. Countries involved are the U.S., Canada, the UK, France, South Korea, and the UAE. Officials have said increasing nuclear power in Europe would help European nations reduce dependence on oil and gas from Russia, while conceding it will require major investment....