Like most human traits, blue eyes are determined by genes, and no two people have exactly the same hue. It works a lot like ...

All blue-eyed people have one ancestor in common, born around 6,000 to 10,000 years ago. Blue eyes are caused by a gene mutation. For years, researchers had searched for it on the OCA2 gene.

Read on to learn about the personality traits associated with having brown, black, hazel, green, blue, and gray eyes. Brown eyes are the most common in the world compared with blue and green.

"When I saw his photo I didn't believe he was real," Joseph's owner said of the unique-looking cat Benjamin VanHoose is a Staff Editor on the Movies team at PEOPLE. He has written about ...

Dark mode allows you to change the usually white or light-colored background ... eye strain like headaches and dry eyes. "Dark mode will reduce the levels of blue light that are emitted from ...

The eyes of a Cuban rock iguana, a gargoyle gecko, a blue-eyed black lemur, a southern ground hornbill, a red-eyed tree frog, a domestic goat, a western lowland gorilla, and a human This story ...