Hazardous Pollutants Rain Down on Houston's Devastation 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 Aug. 31, 2017: A barbed-wire fence encircles the Highlands Acid Pit that was flooded by water from the nearby San Jacinto River as a result from Harvey in Highlands, Texas. ( Jason Dearen / Associated Press ) Produced by Ethan Oberman Hosted by Todd Zwillich Produced by PRI and WNYC