Although we always seem to hear about black cats the most, grey is a very common cat coat color. Grey is often called blue in ...

Birds-of-paradise are even colorful in the dark, with feathers and body parts that glow a brilliant yellow-green under ...

Wolverine is the best there is at what he does. Now, usually, that means slicing up bad guys, being a gruff loner with a ...

Cleaner, more pure water backscatters light in the blue range, which makes it look blue. One famous example is Crater Lake in ...

Any animal’s eye color is determined by its levels of two melanin pigments: eumelanin, which makes brown-black, and ...

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

A 2023 study found that Ötzi, the famous ancient glacier mummy who lived 5,300 years ago before succumbing to a violent death ...