Turtle shells evolved over the course of 300 million years, but self-defense wasn't the initial driver, researchers think.

Tom has a Master's degree in Journalism. His editorial work covers anything from archaeology and the environment to technology and culture. Tom has a Master's degree in Journalism. His editorial work ...

Dominic has a degree from the University of Winchester in film production and is currently studying for his second degree in biology at the Open University. Dominic has a degree from the University of ...