Set the hair dryer on the cool and high setting. Turn it on and point it upward. Carefully put the ping-pong ball in the stream of air. That step may take a little practice, but don't give up! Hold ...

GRAND RAPIDS — A floating ping-pong ball… How can we make a little ball float without even touching it? This month's experiment will teach us about some of the forces acting against it. Let’s get ...