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 ...

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 ...

There’s a lot of debate about weight machines in the fitness world. Some people gravitate towards them because they seem a heck of a lot easier than cranking out some reps with a pair of dumbbells or ...