Wildfires can burn and spread differently depending on what vegetation they burn. The two fires in northern Arizona have ...

In the eyes of the BLM, pinyon pine and juniper trees are weedy species that invade sagebrush rangelands and increase the risk of wildfire.

Interestingly, there are 11 species of pinyon pines; two in the U.S. and nine only found in Mexico. In addition, there are three species of junipers found throughout the pinyon woodlands.

The pinyon jay is a keystone species of these arid forests of diverse piñon pines and junipers, extending over 150,000 square miles across 13 Western states.

The West's ancient and resilient bristlecone pines have appeared immune to bark beetle infestations devastating conifer forests. That changed when bristlecones began dying in Utah's Wah Wah Mountains.

About 37 pines naturally grow wild in North America, but only six of those species grow wild in Colorado: bristlecone pine, limber pine, lodgepole pine, pinyon pine, ponderosa pine and ...

Renewable energy production is a really awful excuse for cutting down pinyon pines and junipers, trees that ranchers in the West have never liked.

One of the most attractive California native evergreen trees is singleleaf pinyon pine.

For pinyon pines, soil fungi can expand this tree’s niche into drier environments. But by farming the specific fungi they need, the trees in a way construct their own niche.

Drive through some of the piñon stands in northern Arizona and you'll probably find people out gathering the cherished nuts.

U.S. wildlife managers will be taking a closer look at a bird that is inextricably linked to the piñon and juniper forests that span the Western United States.