A study has found that the reason why the evolution of the first animals to appear on Earth was delayed for over 10 million years was due to their reproductive methods. Early animals reproduced by ...

Evolution, a new five-part series tells the extraordinary story of how life on Earth has changed over more than four billion ...

Animals from completely different branches of the tree of life, such as insects, worms and vertebrates, independently evolved similar genetic solutions to survive on land, according to a new study ...

A 1976 experiment with Trinidadian guppies revealed evolution's rapid pace. When moved from predator-rich streams to calmer ...

From butterflies to blue whales, corals and worms, Earth is home to an incredible diversity of animals. How all of these animals evolved from earlier, simpler ancestors is one of the most exciting ...