Emerald ash borer (EAB) is a beetle native to Asia that was introduced to Detroit, MI in 2002. It has destroyed tens of millions of true ash species in over 25 states, including Nebraska. Forests, windbreaks, and urban trees—some 44 million Nebraska ash trees—will be lost in the coming years. Many leading EAB researchers speculate that it has the potential to "functionally" wipe out the ash species with devastating economic and ecological impacts.
Nebraska Forest Service provides the EAB Resource Center. See link below.