Image: FILE PHOTO: A family cools off in the water during a heatwave at Santa Fe Dam Recreation Area in Irwindale, California, U.S., August 31, 2017. REUTERS/Mario Anzuoni – File Photo By Environment Correspondent Alister Doyle OSLO (Reuters) – Climate change has caused severe harm to human health since the year … Continue reading Climate change harms health worldwide as millions swelter: study