Science & EnvironmentState crews remove trees in Washington County to slow spread of emerald ash borerBy Cassandra Profita (OPB)April 26, 2024 11:53 p.m.Healthy ash trees near the infestation will be treated with insecticide injections to protect them from the invasive beetle 📨 Daily news in your inboxSign up today for OPB’s “First Look” – your daily guide to the most important news and culture stories from around the Northwest.EmailPlease leave this field blankSign up