The rarest hair and eye color combination What is the rarest hair color and eye color combination? That’d be red hair with blue eyes. There’s a little genetic tweak that makes the combination ...

What does a flower look like to a hummingbird? New research says it’s probably nothing like what humans perceive because ...

Humans rely on sight, which is primarily mediated by three color-sensing cone types, to perceive the world in a kaleidoscope of hues. Blue cones develop earliest, followed by the morphologically ...