The tallest man to ever live was Robert Wadlow, who reached a staggering 2.72m. That's equal to a very large male ostrich or Shaquille O'Neal with two bowling pins balanced on his head. Subscribe to ...

On average, human males tend to be about 5 inches (13 centimeters) taller than females. But why? In short, we're not sure. Even though this sex-linked height difference exists across the world, we ...