A hidden summer threat could soon send twice as many Americans to the hospital

We know the planet is getting hotter, but some of the grim details about what exactly that means for humanity remain a mystery. Researchers are racing to peer into the not-too-distant future of the climate crisis to better prepare us for the worst-case scenarios to come. A new climate study published on Tuesday found that by 2040, overwhelming urban heat and spiking temperatures in the U.S. could double the number of people hospitalized with heat-related illness. Using advanced modeling, the...