The emerald ash borer (EAB) is a small, metallic green beetle native to Asia. It was first discovered in the United States in 2002 and has since spread to many states, causing significant damage to ash trees. The larvae of the beetle feed on the inner bark, disrupting the tree's ability to transport water and nutrients. EAB infestations can lead to the death of ash trees within a few years. Efforts to control the spread of the beetle include insecticides and biological control methods. Public awareness and monitoring are essential to protect urban forests and natural ecosystems from this invasive pest.