The color has an unshakable hold on musicians, artists and writers. The background color is inspired by International Klein Blue, a hue that the artist Yves Klein first mixed in the 1950s, using it to ...

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 ...

Lingering question: Do variations in scent correspond to variations in color? Spring weather in Boulder is difficult to predict because it seems that it is not a time of gradual warming but rather ...