On Rossel Island, Kraus found Dendrelaphis melanarkys, or the black net tree snake. This 4-foot, 11-inch reptile is easier to ...

The intriguing new species, spanning around four feet and one inch in length, was found to have a "matte black" coloring.

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 ...

Tamara Ávila Atagua of The Sloth Conservation Foundation builds rope bridges between trees to help Costa Rican sloths remain ...