Climate change driven by fossil fuel emissions has set the stage for extraordinary heat and humidity that has cast at least one World Cup game into a potential danger zone, according to the World Weather Attribution group of climate scientists. Saturday's match between Paraguay and France is scheduled to kick off at 5:00 p.m. ET in Philadelphia with temperatures exceeding FIFPRO's recommendations for safe play, as a heat dome settles over large swaths of the U.S. and parts of Canada. The U.S. National Weather Service warned that the heat dome could see heat indices reach 105 to 115 degrees Fahrenheit in parts of the Midwest and East Coast, affecting many World Cup host sites.