A goat released by Richard Gibbs quickly moves deep into the Williams Creek Urban Forest to chow down on invasive weeds and grasses in Knoxville, Tenn., Thursday, July 10, 2014. The goats were leased from Whistlepig Farms in Thornhill by the Tennessee Clean Water Network to clear the underbrush. (Photo by Michael Patrick/AP Photo/Knoxville News Sentinel)
|