A new study theorizes that evolution ticks at different speeds, especially when a big group of organisms first appears.

WASHINGTON (Reuters) - Since first appearing during the age of dinosaurs, snakes have authored an evolutionary success story - slithering into almost every habitat on Earth, from oceans to tree tops.

A reduced genome in an island species raises evolutionary questions.

Biologists are closing in on a puzzle that seems to turn classic evolutionary logic inside out, yet may be so common that it ...

An evolutionary biologist reports evidence of repeatable evolution in populations of stick insects. A long-standing debate among evolutionary scientists goes something like this: Does evolution happen ...

Unrelated lineages of electric fish all use the same small set of genes to create their voltage, a genetic search shows. Maybe the same genes... A Shocking Fish Tale Surprises Evolutionary Biologists ...

BOSTON (AP) -- Stephen Jay Gould, a famed evolutionary biologist and prolific author who influenced his field for decades, died Monday. He was 60. Gould died of cancer at his home in New York City, ...

At 84, Ernst Mayr is as active, intellectually engaged, and committed to the vitality of evolutionary biology as he was in 1942, when he helped launch modern evolutionary theory with the publication ...