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 ...

So presenting someone with a gift that is red can create a special experience. “Because it’s an unforgettable, standout color ...

Eye contact helps build trust and communication whether in business, friendships or romantic pursuits. Its importance in human socialization means that we're more likely to take note of eye color and ...

Many of the animals that eat red-eyed tree frogs are nocturnal hunters that use keen eyesight to find prey. The shocking colors of this frog may over-stimulate a predator's eyes, creating a ...