According to the U.S. Forest Service, one researcher studying the Stanislaus National Forest in Northern California found records from 1911 showing just 19 trees per acre in one section of the forest. More than a century later, his team counted 260 trees per acre. (6/7)
A judge cited Dr. Seuss' The Lorax in his decision to throw out a permit for a gas pipeline on the Appalachian Trail and two national forests. "We trust the United States Forest Service to 'speak for the trees, for the trees have no tongues.'"