Add Yahoo as a preferred source to see more of our stories on Google. What color is a tree, or the sky, or a sunset? At first glance, the answers seem obvious. But it turns out there is plenty of ...

Forbes contributors publish independent expert analyses and insights. GrrlScientist writes about evolution, ecology, behavior and health. When you look at a rainbow, do you see bands of specific ...

CAMDEN, N.J. -- How do we remember colors? What makes green... green? As Sarah Allred explains, while color perception universally involves the practice of categorizing colors according to basic ...