The root of the problem

A worker injects chemicals into a hemlock’s trunk in this photo from the West Virginia Department of Agriculture. State officials have added Jefferson and Berkeley counties to a pilot program aimed at saving trees from the hemlock woolly adelgid. The Asian pest threatens to wipe out stands of the trees across the southern Appalachians.

A worker injects chemicals into a hemlock’s trunk in this photo from the West Virginia Department of Agriculture. State officials have added Jefferson and Berkeley counties to a pilot program aimed at saving trees from the hemlock woolly adelgid. The Asian pest threatens to wipe out stands of the trees across the southern Appalachians.

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