What sharks, honeybees and humans have in common

A mathematical pattern of movement called a Lévy walk describes the foraging behavior of animals from sharks to honey bees, and now for the first time has been shown to describe human hunter-gatherer movement as well. The study, led by University of Arizona anthropologist David Raichlen, was recently published in the Proceedings of the National Academy of Sciences.

Humans evolved from ancient sharks

Human beings - along with all jawed vertebrates on Earth - are descended from a fossil fish that looks a lot like today's sharks.