How does it make you feel when you put forth just as much effort as the next guy, but he receives twice the reward? Unfair! But how did people acquire the sensibilities involved when assessing fairness? Certain animals recognize unequal rewards too, prompting researchers to try and unravel the origins of fairness.

What makes sleep so mentally refreshing? University of Rochester neuroscientist Jeff Iliff addressed the crowd gathered at a September 2014 TEDMED event and explained his amazing new discoveries.¹ The words he used perfectly match what one would expect while describing the works of an ingenious designer.²