blue eyes, n.Trivia

All blue-eyed people can be traced back to a single common ancestor who lived near the Black Sea between 6,000 and 10,000 years ago.

Blue-eyed people have higher alcohol tolerance.

Blue eyes are blue for the same reason that water and the sky are blue: they aren't blue in and of themselves, but rather, they scatter light so that only blue light reflects out.

Having both red hair and blue eyes is the rarest combination in humans.

Reindeer eyes turn blue in the winter.

People with dark eyes are apparently more agreeable, while people with blue eyes tend to be more competitive.