Diet likely changed game for some hominids 3.5 million years ago

A new look at the diets of ancient African hominids shows a "game changer" occurred about 3.5 million years ago when some members added grasses or sedges to their menus, according to a new study led by the University of Colorado ...

Talk it over: Language, uniquely, makes us human

We humans tend to consider ourselves apart from other species. But we're not really so different. So what makes us unique? I'd say it's language, though not everyone would agree.

Sifting through S. Africa's archaeological riches

When Morris Sutton picks a chipped, ordinary-looking rock from the soil, he's the first to touch the stone tool since an ancestor of man used it nearly 2 million years ago.