Informational website part two of two explaining the Emerald Ashe Borer by The Conservation Foundation: Many of you have probably heard about the decline of the ash tree throughout North America, but what exactly is causing this massacre? The answer is the invasive Emerald Ash Borer, or EAB. Descendants of Asia, these metallic green half-inch beetles lay their eggs on the ash trees and the larvae feed under the bark, causing the tree to slowly die off. First discovered in Michigan in 2002, the EAB has rapidly made its way throughout much of the Northeastern United States. By educating the public about this invader, there are hopes it will help slow down the spread of EABs.