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 ...

Skin color patterns in animals arise from microscopic interactions among colored cells that obey equations, say investigators. Researchers report that a lizard acquires its adult skin color by ...

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

Scientists are in a race against time to document and safeguard the diversity of lizards that live on the island and its ...