It may well be that our faces evolved the way they did for an unglamorous reason: to take a punch.
Trace takes a look at the science of drawing faces, and why we draw humans that look like Neanderthals.
It has been commonly accepted that humans have six basic emotional facial expressions. However, new research says that we actually only have four, and Anthony is here to talk about why this matters.
Scroll through the photos of Faces of Our Ancestors