Human evolution is often told as a tidy story of adaptation, yet some of our most familiar body parts still defy straightforward explanation. From the jut of the human chin to the curve of the outer ...

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 ...

Scientists think they may have finally discovered the reason why human body temperature has been decreasing over the past few centuries—gut microbes. A paper published in the American Journal of ...

The human body is a truly incredible machine. It is made up of many different parts that work together every single day. Our skeleton is one of the most important parts. As an adult, you have 206 ...