Saliva is a bodily fluid most of us take for granted despite the significant roles it plays: aiding in digestion, maintaining ...

The human body is a machine whose many parts – from the microscopic details of our cells to our limbs, eyes, liver and brain – have been assembled in fits and starts over the four billion years of our ...

A reconstruction of the crushed skull labelled Yunxian 2, which has features that are closer to species thought to have existed later in human evolution - BBC A digital reconstruction of a ...

That’s the compelling argument made by Caleb Scharf—author and senior scientist for astrobiology at NASA Ames Research in Moffett Field, Calif.—in his new book The Giant Leap: Why Space Is the Next ...

A badly crushed cranium unearthed decades ago from a riverbank in central China that once defied classification is now shaking up the human family tree, according to a new analysis.Related video above ...