A panel of scientists convened by the United Nations has published a report on the impacts that climate change has had, is having and will have on the planet, including on the natural world and human civilization. The report by the Intergovernmental Panel on Climate Change concludes that nearly half the world's population already faces significant risk from global warming.
Its findings have prompted strong reaction from officials, scientists and climate activists, and calls for governments to step up ahead of this year's U.N. climate conference, known as COP27.
