KULR: Millions of trees are dying in the forests surrounding Yellowstone and Grand Teton National Parks. An epidemic of pine, spruce, and Douglas Fir beetles are killing the trees. They’re also threatening a system that supports grizzly bears and other wildlife. Pine Beetles are attacking here in the Union Pass area of the Wind River mountains. Where a lush green forest once stood, an aerial view shows huge patches of red mark dying pines. Most are lodge pole pines. But, the high mountain …