This story appears in the June 2015 issue of National Geographic magazine. The eye is an organ of extreme perfection. I have a strong interest in evolution, and eyes have developed stunning ...

and a human This story appears in the February 2016 issue of National Geographic magazine. “If you ask people what animal eyes are used for, they’ll say: same thing as human eyes. But that’s ...

Human eyes can’t decipher individual pixels from far away—this video shows why. A version of this story appears in the October 2018 issue of National Geographic magazine. Short for “picture ...