11/15/2014 09:42 am ET Updated Nov 15, 2014

How Animals Hacked The Rainbow And Got Stumped On Blue

Westend61 via Getty Images

Until about 600 million years ago, seeing colors didn't matter so much to Earth's inhabitants — nobody had eyes.

"Before the eye evolved, you just wouldn't have seen what was there," says Andrew Parker, a biologist at London's Natural History Museum who studies the evolution of color.

Read more on NPR