The invasive insect emerald ash borer is killing ash trees at an unprecedented rate in the United States, and now five North American species of ash are considered critically endangered, according to the U.S. Forest Service.
But a small percentage are surviving, and research by Forest Service scientists suggests that those trees may hold the key for saving the species.
This content is restricted to subscribers of OutdoorNews.com. If you are already an OutdoorNews.com subscriber, you can log in here. If you are not and would like to read this and all the other great content OutdoorNews.com has to offer, click here.


