Ancient DNA technology has revolutionized the way we study human history and has quickly taken off, with a constant stream of studies exploring the genes of long-ago people.

Humans have been getting ink for at least 5,200 years. Here are some of the most intriguing ancient tattoos, from cultic symbols to complex horse motifs.

Ancient DNA technology has revolutionized the way we study human history and has quickly taken off, with a constant stream of studies exploring the genes of long-ago people.

What does it mean to be human? For a long time, the answer seemed clear. Our species, Homo sapiens — with our complex thoughts and deep emotions — were the only true humans to ever walk the Earth.

What does it mean to be human? For a long time, the answer seemed clear. Our species, Homo sapiens — with our complex thoughts and deep emotions — were the only true humans to ever walk the Earth.

Our species, Homo sapiens — with our complex thoughts and deep emotions — were the only true humans to ever walk the Earth. Earlier forms, like the Neanderthals, were thought to be just steps ...