One recent morning, trying to find the source of a warbler trill high in a white pine tree, I was rewarded with a brilliant ...

Sean O'Brien, from the UNH Cooperative Extension, takes a look at how beech leaf disease spreads and the signs to help you ...

A mountain pine beetle outbreak is on the rise in Black Forest and across the state. The Colorado State Forest Service is ...

Lake Arrowhead exists as California’s worst-kept secret—a mountain paradise that somehow remains blissfully uncrowded despite ...

Influencers are shepherding their flock to construct trash mountains overlaying real mountains.

One recent morning, trying to find the source of a warbler trill high in a white pine tree, I was rewarded with a brilliant flash of orange. It was my ...

Visit this area of the White Mountains in California's Sierra Nevada region, where you can hike and see trees that predate ...

Jake “The Tree Geek” McWhorter is back in the studio to give us another lesson on the trees we want to plan in our yards and ...

Pine trees are one of the most common coniferous species in North America. Learn how to identify the types found in the United States and Canada.

One such pest, the southern pine beetle, is of concern for southeastern states, particularly the Upstate area of South ...

All tree leaves have an outer layer called the epidermis, which can also be used in the identification process. This leaf "skin" always has a waxy cover called the cuticle and varies in thickness ...