Get Reader’s Digest’s Read Up newsletter for more fascinating facts, humor, cleaning, travel and tech all week long. The color of your eye is determined largely by the interaction of several ...

Crocodile's eyes are an engineering marvel ... Revealing the Stunning 2.33-Carat Winston Red Diamond 8 Mind-Boggling Facts About the Octopus What Is an Aurora? National Treasure: The Fearsome ...

Crocodile's eyes are an engineering marvel: They can see all around, can track different targets, are retractable in battle, and can even see at night. 8 Mind-Boggling Facts About the Octopus ...