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 ...

Modern humans (Homo sapiens) are the only existing members of the human family tree. However ... However, these adaptations ...

Paranthropus capensis, a “gorilla-like” human relative that lived in southern Africa some 1.4 million years ago. A new study focuses on a hominin jawbone known as SK 15 that was unearthed in 1949 at ...

though these factors are also rooted in human activity. The number of trees facing extinction (over 17,000) is double that of threatened mammals, reptiles, birds, and amphibians combined ...

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 ...