Sometimes, Jon Richard says, he’ll be up in the canopy of a large Missouri tree, doing work of some kind, and will stop for a moment to sit still on a perch.

Senior Democrat says Pentagon didn’t present conclusive evidence alleged drug smugglers killed in strike were gang members ...

Australia has approved a world-first vaccine to protect koalas from chlamydia. This disease causes infertility and death in the endangered species. Developed by the University of the Sunshine ...

Researchers from the University of Tsukuba and Hokkaido University investigated the behaviour of a species of tree-climbing ...