From velvety purples to fiery reds, many people can see a spectrum of vivid colors via the human eye. Others, however, may have limited hue perception due to certain conditions. Animals, on the other ...

Zebras, a children’s tale goes, became striped after “standing half in the shade and half out of it.” While the author, Rudyard Kipling, wasn’t a biologist, his story may hold some truth: research ...