Discoveries in the past two decades have added new branches to the human family tree, including species such as the hobbit-like Homo floresiensis and the powerfully built Homo naledi. A pinkie ...

Although possessing a “moderate” sized brain, these features are generally associated with older, long-extinct members of the ...

Compare this to the natural background rate of one extinction per million species per year, and you can see why scientists refer to it as a crisis unparalleled in human history. The current mass ...

(CNN) — The story of how humans evolved is a long and winding one — and it grows more complicated with each passing year. Discoveries in the past two decades have added new branches to the ...