When it comes to spectacular displays of color, birds are obvious standouts in the natural world. Many brightly colored birds get their pigments from the foods that they eat, but that's not true of ...

Learn more about what a star’s color means and while you’ll rarely see a twinkling green star in the night sky. When looking up on a cloudless night, do you notice that stars can sometimes show as ...

Try to imagine reddish green — not the dull brown you get when you mix the two pigments together, but rather a color that is somewhat like red and somewhat like green. Or, instead, try to picture ...