Red is the rarest hair color, but to understand why that’s the case, you need a basic grasp of the science. There’s a lot ...

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

Have you ever wondered if people with blue eyes are related? Here’s the answer. What is the rarest hair color and eye color combination? That’d be red hair with blue eyes. There’s a little ...