Nearly 40 percent of schools in the United States were built before the 1970s, when temperatures were cooler and fewer buildings needed air conditioning.
As climate change raises school temperatures, some are too hot for learning washingtonpost.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from washingtonpost.com Daily Mail and Mail on Sunday newspapers.
Schools that never needed AC are now overheating Fixes will cost billions yahoo.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from yahoo.com Daily Mail and Mail on Sunday newspapers.
As heat waves are lasting longer and reaching higher peaks as average temperatures rise, government experts are grappling whether to encourage students to stay at home or come to hot classrooms.