In this episode we interview US Forest Service entomologist Patrick Engelken. Patrick studies the effects of emerald ash borer on riparian forests. Emerald ash borer was first discovered in Michigan, where Patrick did his graduate work, in 2002; it was discovered in Vermont in 2018. We discuss how emerald ash borer feeds on ash trees, the impact it has on forest composition and structure, and what restoration practitioners and others can do to help fight the spread of this invasive insect.