What is the most common eye color? When it comes to the most common eye color around the world, brown eyes take the cake. The AAO reports that as many as 79% of people worldwide have some ...

Blue eyes are the next most popular eye color, but they are a more recent evolutionary occurrence, says Dr. Patel. About 27% of Americans have blue eyes, the AAO reports, ...

A baby born with blue eyes can have brown eyes by their 1st birthday. Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent every weekday. Search for: ...