On some islands of the Galápagos archipelago, wild tomatoes are doing something peculiar. They're shedding millions of years of evolution.

Laughter seems to enhance positive emotions in bonobos and influence their decision-making to expect more positive outcomes.

How did horses become some of the greatest athletes in the animal kingdom?Researchers may have found the answer.

Scientists have long wondered whether evolution would follow the same path if it had a "do-over." New research suggests that it does.

Biologists have shown evidence of a kind of "copycat" evolution between extremely short-faced breeds of cats and dogs.

A gradual uplift of land enabled the early ancestors of animals such as giraffes, elephants, and even humans to roam between Africa and Asia.

A new study reveals a secret to crocodile ancestors' longevity, which could help better protect our planet’s most vulnerable species.

A new study of an ancient skeleton has answered many questions about an enigmatic critter called Mixodectes pungens.

A new study offers a glimpse into the evolutionary arms race between predators and prey and provides insights that may inform pain research.

Researchers have discovered strong evidence that the textbook version of how the universal genetic code evolved needs revision.