Add Yahoo as a preferred source to see more of our stories on Google. Alysson Muotri, Ph.D. Lead exposure shaped human evolution, influencing brain development and the rise of language. (CREDIT: Kyle ...

UC San Diego researchers have found high levels of lead in the teeth of both Neanderthals (left) and modern humans (right). However, a gene mutation may have protected modern human brains, allowing ...

Long before factories, mines, and cars filled the air with pollution, our distant ancestors were already living with a silent toxin: lead. A groundbreaking study reveals that hominids — from early ...