A study from researchers at the National Center for Atmospheric Research (NCAR) and the City University of New York (CUNY) shows that U.S. residents' exposure to extreme heat could increase four- to six-fold by mid-century, due to a warming climate and a population that's growing fast in the hott... Show moreA study from researchers at the National Center for Atmospheric Research (NCAR) and the City University of New York (CUNY) shows that U.S. residents' exposure to extreme heat could increase four- to six-fold by mid-century, due to a warming climate and a population that's growing fast in the hottest regions of the country. NCAR scientists Brian O'Neill and Linda Mearns are two of the study's co-authors. Show less