Amid the legal theater in the U.S. over sex and gender identity—triggered by a Trump administration decree that “‘sex’ shall refer to an individual’s immutable biological classification as either male ...

This video examines three animals whose current scientific classifications are being questioned. Through genetic data, ...

One of the things that makes developing effective treatments for Parkinson's disease so challenging is its complexity. While some forms are caused by genetics, others have environmental factors, and ...

Introduction: Carving nature at its joints, or Why birds are not dinosaurs and men are not apes -- Part I. The Interrelationships of Organisms: 1. What this book is about -- 2. Classification -- Part ...