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 ...

Researchers at Columbia Engineering have built a cancer therapy that makes bacteria and viruses work as a team. In a study ...

A cow, left, and two water buffalo linger in the shade at an agricultural property in Bharatpur Municipality, Chitwan District, in Nepal. A recent study led by Nicolas Choquette-Levy, an assistant ...