Photo Details

Photo detail

August 24, 2013

Cut poplar trees are stacked at the Metropolitan Wastewater Management Commission's Biocycle Farm north of Eugene, Ore. on Wednesday, Aug. 21, 2013. Fifty-two acres of trees are being harvested from what is believed to be the nation's largest tree farm fed with treated sewage sludge - known in industry parlance as biosolids. (AP Photo/The Register-Guard, Brian Davies)