An international study changes the view that exposure to the toxic metal lead is largely a post-industrial phenomenon. The research reveals that our human ancestors were periodically exposed to lead ...

Our ancestors' teeth tell an astonishing story of survival and adaptation. A recent study reveals how their diet influenced the evolution of their dentition. Around 3.8 million years ago, hominids ...

In life, the creature probably resembled a chimpanzee more than anything else. It moved through a lakeside landscape of grasslands and forest searching for food, accompanied by small bands of its ...