How Colorblindness Works

Roses are red, violets are blue -- well, bluish. The sky is blue, too. Grass is green. These are things that most of us know for a fact and don't question. But what if you were colorblind? What would you see? Is life one long black-and-white movie?

In this article, we're going to learn what the world looks like for someone who's colorblind. » Full Story on HowStuffWorks