Humankind's tangled shrub of ancestry now has a new branch: Researchers in the Philippines announced today that they have discovered a species of ancient human previously unknown to science ...

Steve Nix is a member of the Society of American Foresters and a former forest resources analyst for the state of Alabama. Leaf shapes play an important role in tree identification, providing key ...

News Published: 28 June 1888 Personal Identification and Descriptions 1 Nature 38, 201–202 (1888) Cite this article ...

Invasive species are non-native species that have been introduced to an ecosystem and have established there causing ecological damage. The study of invasive species involves questions about the ...