No two people in the world have the same color eyes. Experts weigh in on the genetics that cause the rarest eye color in the world...plus, what can cause our eye color to change.

Gray and green eye colors are the rarest in the U.S., although extremely rare red color can occur with albinism. Eye color is determined by the amount of melanin in the iris, with more melanin making ...

There's something about the eyes that makes us lean in. Perhaps it's the rarity of the color, a title worn by those with green eyes who make up only 2% of the global population, according to the ...

Cat-like eyes show up in searches everywhere. If the internet is this obsessed with eye color, how rare are green eyes in humans? They're uncommon enough that seeing them still feels like spotting a ...