Many scientists, such as the late Stephen Jay Gould, to conclude that each group of living things evolves in its own idiosyncratic manner. But now biologists at Washington University in St. Louis have ...

Hulk lizards are eliminating long-standing color types within their species, disrupting an evolutionary system that lasted millions of years.

Fossils and DNA reveal how climate change is shrinking the habitat of an Australian lizard and threatening its future ...