science environmentOregon Becomes 1st State To Sharply Restrict Herbicide Linked To Tree DeathsBy Emily Cureton Cook (OPB)Sisters, Ore. May 10, 2019 6 p.m.📨 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