Fighting for Free Speech, Learning to Trust in Flint, The Global AC Boom Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email Fighting for The First Amendment in the Digital Age Flint Residents: New City-Approved Water Burns Our Skin, Causes Headaches U.N. Accused of Cover Up as Cholera Ravages Haiti Zika Threat: Scientists, Doctors Call For Olympics to Be Postponed or Moved How Air Conditioning is Destroying the Planet Prince's Death Adds to Opioid Epidemic's Grim Toll Changing Landscape Raises Concerns in American West An estimated 700 million air conditioners will be installed worldwide by 2030. ( Olga Kashubin / Shutterstock ) Produced by PRI and WNYC