Add Yahoo as a preferred source to see more of our stories on Google. Does the human body contain any truly useless parts? Arguably, yes — but they might not be the ones you assume. Some body parts, ...

Are humans natural born runners? Here’s why evolutionary and anatomical evidence suggests running was more central to our ...

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 ...