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

The exact cause remains to be determined, but scientists do know that eye color began to change long before recorded history began. The following is a transcript of the video. All blue-eyed people ...

With independently rotating eyes that can see in different directions, chameleons have some of the most fascinating and expressive eyes in the animal kingdom. Their large, round eyes glow with ...