When viewed in enhanced color, the icy, outer world of Pluto looks very different from its more uniform, subdued hues. The hilly plains in Pluto's heart-shaped area are mostly uniform, as a flat ...

Composite images of Saturn’s rings, taken by NASA’s Hubble Space Telescope, have revealed mysterious color variations that hint that the rings could be made of materials from the outer solar system.

One of the curious things in the world of birds is why most species come in only one color form, while others come in many. We can start with the western tanager. Adult males all look the same. Adult ...

Spend a little time people-watching at the beach and you're bound to notice differences in the amount, thickness and color of people's body hair. Then head to the zoo and compare people to chimps, our ...

The analysis of visual color and color variation is an important exercise for numerous markets and industries. Here, we describe in detail protocols and optimal practices for dependable and sturdy ...

In a recent study, researchers took skin color measurements from local residents in India to quantify the range and extent of variation in skin pigmentation phenotype and found that one of the ...

A variety of animals have male-specific ornament traits and these ornaments are favored by female choice. Which male traits are preferred by females often varies among females. Genetic mechanisms that ...