In the summer of 2002, scientists detected a new exotic insect in six southeast Michigan counties -- Livingston, Macomb, Monroe, Oakland, Washtenaw and Wayne.  This pest, known as the Emerald Ash Borer (EAB for short), is an invasive species originally from Asia and previously unknown in North America that attacks ash trees. To date, it has killed or damaged millions of ash trees in Michigan.  It has been detected in Ohio, Indiana, and Windsor, Ontario, Canada. 

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