Wyoming's Environmental Gag Order 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 A coal fired power plant June 26, 2007 in Laramie, Wyoming. While Wyoming is the least populous of any state in America, it is also a significant polluter. ( Spencer Platt / Getty ) Produced by Kyle McAuley Produced by PRI and WNYC