Harmful heat doesn’t always come in waves

In recent weeks, extreme heat waves have broiled the United States, China and Europe. But scientists are warning of another hazardous form of heat: chronic heat. In places like Miami and Phoenix, temperatures can soar for months at a time without reaching heat wave levels, potentially contributing to health issues such as kidney disfunction, sleep apnea and depression. But too little research has focused on how these impacts may compound over months of exposure, University of Miami…