Mammals keep evolving into anteaters, eating only ants and termites, at least 12 times since the age the dinosaurs.

Properly deciphering the branching pathways of evolution could unlock the history of every component of natural biology.

Check the complete syllabus and exam pattern. Get subject-wise topics, PET details, and the selection process for Level-1 ...

Steve Nix is a member of the Society of American Foresters and a former forest resources analyst for the state of Alabama. According to National Wildlife Federation, there are two varieties of Douglas ...