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The bug that ate Christmas


December 19, 2013 3:03 PM EST Balsam and Hemlock Woolly Adelgid are killing wild Christmas trees in the Great Smoky Mountains National Park and the Appalachian Mountains. Lush evergreens morph into frail, barren trees as the invasive insects from Asia asexually reproduce along the needles and suck the fir dry. Park rangers are releasing biological controls in the form of predator beetles who eat the eggs of the tiny pests. (Courtesy of the National Park Service)

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