A disease called ash dieback is killing Europe’s ash trees. And now they face another new threat: Emerald ash borer, an Asian native that has wiped out millions of ashes in the U.S. and Canada, including Ohio. BBC Radio 4 recently talked with CFAES’s Enrico Bonello about the insect’s devastating impact (link to audio; his interview starts at around 19:11 but the whole story’s worth a listen). (Photo: David Cappaert, Michigan State University, Bugwood.org.)