Laborers have suffered in extreme temperatures triggered by climate change. Deaths aren’t inevitable, researchers say: Employers can save lives by providing ample water and breaks.

Climate change is increasing the frequency and intensity of extreme heat, which is already the No. 1 weather-related killer in the U.S.

New York City summers are only getting hotter. Doctors, scientists, city planners and community advocates are looking to longer-lasting solutions to bring down the temperature and fight the public health threat of extreme heat.