New research shows that the earliest sponges were soft bodied and lacked skeletons, explaining why their oldest fossils are ...

A University of Montpellier study published on September 1st in the Proceedings of the National Academy of Sciences reported that human intervention over the last millennium drove a sharp divergence ...

One of the biggest quests in biology is understanding how every cell in an animal's body carries an identical genome yet still gives rise to a kaleidoscope of different cell types and tissues. A ...

The evolutionary origin of sperm can be traced back to a single-celled ancestor of all living animals. Almost all animals reproduce by having a single-celled stage of their life cycle, involving two ...