(These animals glow for science.) Tubercles, or small, rounded, bony projections, dot the faces of chameleons. The lizards also have four layers of thin skin, which have different pigments to help ...

They don’t have bedroom black ... dark dots. But when the researchers spotlighted the frogs with an ultraviolet flashlight, the animals glowed blue-green. The intensity of the glow was ...

So white spots on a black background look bigger than same-sized black spots on white background, and Galileo's glowing stellar objects are not really as big as they might appear to the unaided eye.