Drones monitor spread of Emerald Ash Borer
Emerald Ash Borers may be small insects, but they can do big damage to trees. They're highly destructive -- and if they infect an ash tree, the tree will die unless it's chemically treated. Some researchers in Colorado -- are using drones, to try to track
- Dec 11, 2017, 11:04 a.m.
- Dec 11, 2017, 9:49 p.m.
- Dec 11, 2017, 7:40 p.m.