In fact, it's happened so often that there's a scientific term for it: carcinization. If you close your eyes and think of a crab, you might picture a round, flat body. Big front claws and multiple ...

Abrupt shifts in the evolution of animals -- short periods of time when an organism rapidly changes size or form -- have long been a challenge for theorists including Darwin. Now a newly published ...

A groundbreaking study has found that evolution is not as unpredictable as previously thought, which could allow scientists to explore which genes could be useful to tackle real-world issues such as ...

The ideas of Charles Darwin and the concept of evolution by natural selection continue to have a profound influence on modern biology – they permeate almost every area of scientific exploration. The ...

A light-colored deer mouse (Peromyscus maniculatus) on dark soil in the Sand Hills of Nebraska. This poorly camouflaged rodent might not survive much longer, as it's easily spotted by hungry owls ...