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ST. LOUIS, MO (KTVI) - One of the most destructive tree killing insects in the U.S., the Emerald Ash Borer, was just discovered in St. Charles County on Highway N, south of I-64. This marks the first infestation in the St. Louis area of a bug that's already killed millions of Ash tree's in the Midwest and Canada.

Urban Forest consultant, Skip Kincaid tells us why we should be worried.