"The 2026 FIFA World Cup was the hottest World Cup since the competition began in 1930. A Guardian analysis found that close to 20 percent of matches were played under heat and humidity conditions that FIFPRO, the players' union, has flagged as dangerous enough to warrant delaying or postponing play. Some 20 games were played at wet bulb globe temperatures that hit or exceeded 28 degrees Celsius (82 Fahrenheit)." - Katharine Hayhoe's newsletter