Ash Borer Infestation

Emerald Ash Borer
Thomas Simonetti

Stumps of Ash Trees
A type of voracious beetle known as the emerald ash borer has killed some 60 million ash trees in fifteen states across the U.S. Towns like Midland, Mich., above, have been forced to cut down hundreds of sick or dead trees because of the infestation. This photo was taken in May 2011.

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