We are so used to the oceans being blue we use it as a signifier everyone recognizes on maps. However, the color is not ...

Colors are one of the first things people learn about in school. Well, you might have to start re-learning. At least, when it comes to one color people think is on the spectrum. Popular Mechanics ...

why didn’t people just combine blue and red? Illustration by Aurélia Fronty Q: I’ve heard that purple was called the royal color because purple dye used to be scarce. Why didn’t people just ...

The human eye does not actually see purple, as purple is not a color on the visual spectrum ... When we “see” a combination of blue and red wavelengths, the brain bends the visual spectrum ...

Early blue-green algae evolved two pigments—one for white light, one for green. It gave them an edge in the evolving color of ancient seas. If we spotted a pale-green ocean from space ...