Pinyon-juniper woodlands are a common sight in much of Utah. But pinyon trees are declining, while junipers are expanding.

Old-growth juniper trees are a symbol of the American West. Their ancient and gnarled trunks and branches twist into haunting shapes immortalized in photos by Ansel Adams. East of Bend, in the Oregon ...

Varlin Higbee walks through a dense pinyon-juniper woodland in Lincoln County, Nev. The county commissioner would like to see the trees harvested and used for the production of biofuel. (Louis Sahagun ...

Bend homebuilders are urging the city to remove juniper trees from its list of protected species under the city’s tree code, reasoning that keeping junipers will increase the cost of new homes while ...

Across Southwest Colorado, juniper trees may look like they're dying, but local foresters say the situation is a lot more complicated - and puzzling - than meets the eye. "It's very strange," said ...

The reason why so many tree species can coexist in species-rich forests has long been a subject of debate in ecology. This question is key to understanding the mechanisms governing the dynamics and ...