A stubborn baby hippo at a Kansas wildlife park met his match when his mother delivered a look every parent knows.

By Stephen Beech Man's ancestors transported stones over long distances to craft tools 2.6 million years ago - 600,000 years ...

An Oldowan flake that was found alongside a hippopotamus shoulder bone at a hippo butchery site excavated in Nyayanga. Durable and versatile tools like this one were crafted from special stone ...

Archaeologists previously discovered similar rocks that hominins transported to a separate, 2-million-year-old site on the ...