In a new study, researchers used more than 5 million measurements from individual trees across much of eastern North America and showed the rate at which introduced species are spreading has increased ...

A professor's casual hike in the High Sierra turned into a new elevation record for California's highest tree, the Jeffrey pine, which wasn't formerly known to grow at extreme elevations.

If you're born in the month of May, your birth flowers are lily-of-the-valley & hawthorn blossoms. Discover why they're perfect in that role.