A good way to start an argument among biologists is to ask them what seems a simple question: "What is a species?" To evolutionary theorists, a species is a fundamental unit, and transitions between ...

Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook In the Smoky Mountains of North Carolina, Rackham student Matthew Chatfield carefully inspects ...

Seven-year-old Allen has a problem many of us face: He would like to be half-man, half-cheetah, but he doesn't know where to begin. Does the technology exist to give him the spots, speed, adorable ...