The question of what defines a species has vexed scientists across the ages, particularly in conservation, where decisions require a firm understanding of biodiversity. When you purchase through links ...

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 ...

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 ...

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 ...