Trees have long been appreciated for adding beauty, shade and a sense of refuge to our cities. Urban street trees offer a host of ecological benefits, too: combating the heat island effect and ...

Add Yahoo as a preferred source to see more of our stories on Google. John Poltrack / Getty Images There’s a lot to love about mountain ash, a delightful native tree that fits easily into urban and ...

Botanists in the UK have teamed up with game development company Team Cooper to design a social media game that uses real genetic data from the common ash tree, Fraxinus excelsior, and from the ...

Without question or doubt, ashes rank as the most common and most abundant trees growing along our neighborhood streets and in our yards and parks. Elms rank much lower in abundance as street trees.

The emerald ash borer, a small green beetle native to Asia, has been damaging ash trees in the Kansas City area for over a decade. Dr. James E. Zablotny, USDA U.S. Department of Agriculture A tiny ...

Samples for the study were collected by researchers from Penn State, the Forest Service and other partners around the Oregon ash range, extending from California, Oregon and Washington into British ...

The invasive emerald ash borer, according to the U.S. Department of Agriculture, was first found in the United States in southeast Michigan in 2002. In the decades since, the wood-boring beetle has ...