Fish physiologist Lucy Harding, and colleagues, have solved the mystery of why some fish are warm-blooded.
Scientists have painstakingly recreated the faces of two of our earliest ancestors dating back millions of years.
Known as Lucy and Psyche, the new spacecraft will be studying two relics of the early solar system.
Scientists believe that an early human ancestor discovered 40 years ago died after falling out of a tree.
Scientists have found evidence that stone tools were used to cut meat almost 1 million years earlier than thought.