Patterns carved in an arm bone could mean the gruesome practice held some ceremonial value for Paleolithic people -- Read more on ScientificAmerican.com
Western fence lizards are more spooked by red and gray shirts than they are by blue ones—perhaps because the males have blue bellies themselves. Christopher Intagliata reports. -- Read more on ScientificAmerican.com
An epic bout of cold weather quickly altered a population of lizards—an example of natural selection in action. Christopher Intagliata reports. -- Read more on ScientificAmerican.com