Confused about native, non-native, introduced, and invasive species? This guide breaks down the definitions, explains how scientists classify them, and explores real-world examples like zebra mussels ...

Dave Miller: This is Think Out Loud on OPB. I’m Dave Miller. The Trump administration is proposing to change the definition of “harm” under the regulation of the Endangered Species Act. For decades ...

Thank you for publishing Malcolm G. Scully’s “Are You a Lumper or a Splitter?” (August 16, The Review). The issues are by no means limited to birds. ... A great many of my colleagues around the very ...

On March 6, the U.S. Fish and Wildlife Service (FWS) released a proposed rule that would amend its regulatory definition of shellfish by removing the phrase “having a shell” and expanding the ...

Lauren Kinsman-Costello defines what it means when a species is non-native or invasive. Lauren Kinsman-Costello, Associate Professor of Biological Sciences at Kent State University, defines what it ...