For most of human history, green eyes didn’t exist. Understanding why they do now means rethinking what we know about evolution itself.

Green eyes have fascinated humanity for thousands of years. They have inspired myths, folklore, literature, and more re ...

Blue, green, amber: Someone’s eye color immediately attracts our attention. But there’s something unusual about human eyes: We have a large visible area of white that surrounds the iris. Most other ...

Lock eyes with a chimpanzee, and you will notice something is missing. The tissue surrounding their iris, called the sclera, is a deep brown or nearly black. You cannot easily tell where they are ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Here’s what you’ll learn when you read this story: Eye color comes down to a pigment ...

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