By Miriam Raftery

Roger Coppock contributed to this story

September 8, 2019 (San Diego’s East County) -- Extreme heat is poised to rise steeply in frequency and severity over the coming decades, bringing unprecedented health risks for people and communities across the country. That’s the disturbing finding of the Union of Concerned Scientists in a just-issued report titled Killer Heat in the United States: Climate Choices and the Future of Dangerously Hot Days.