The next in our series, learn about what specifications narrowed the selection of the U.S. Capitol Christmas Tree and how ...

Matt Harris, a forest fire researcher at Western and lead-author of the study, says that two decades of data on fires across four states paints a clear picture that aspen trees have a natural ...

The sky islands of southern Arizona, New Mexico, west Texas and northern Mexico are unique ecosystems that really have no ...

Spruce up your yard! With cold-weather hardiness, evergreen beauty and a range of sizes and shapes, the many types of spruce trees offer something for every landscape. Spruces are tall ...

A new tarantula species has been found in southeastern Arizona by two researchers who have identified more of the giant spiders than just about anyone on Earth.

Teak is a valuable tree species known for its use in furniture and other applications. It is naturally distributed from India to Indochina and is cultivated in approximately 65 countries worldwide.

And you might have it. The city is looking for a spruce tree that is more than 30 feet tall to serve as its community tree on Continental Square this holiday season, according to a news release.

First discovered in 1991, Litoria stellarum is a rare new tree frog species found near a waterfall in Papua New Guinea’s Dokfuma Meadow in the Star Mountains.

Some effects of Arizona's Dragon Bravo Fire are clear, but what's happened to wildlife may not be known until the flames die down.

Owls make their homes in many national parks around the country, though they can be tricky to spot. Here are a few profiles ...