The Emerald Ash Borer (EAB) has killed millions of ash trees since its discovery in southeastern Michigan in 2002. Native to Asia, this insect was probably introduced to the United States in wood packing material carried in on cargo ships or airplanes. Through a combination of natural spread and human activity it is now found in the northern portion of the Midwest and east coast. Minnesota to Maine to Georgia. Colorado and Kansas also contain EAB. All of these locations place millions of additional ash trees at risk. It will continue to spread.