Some people hunt animals and others hunt for trees. In this National Public Radio story, one in a special series called Big Trees and the Lives They've Changed, Ketzel Levine accompanies the foremost big tree hunter into the forests of the northwest. While they do find some big trees, it's what they don't find -- the absence of big trees -- that's most illuminating. By big, we're talking trees that are in excess of forty feet in circumference and as tall as a football field is long; they are huge harbingers of life and whole ecosystems. The story is perfect for a lay audience, but would also be a great addition to any class studying related topics.