Why Does a Spinning Top Stop?

“I suspect a top is one of those things that wants to be invented,” Physicist Robert Greenler suggests as he spins fruits and vegetables — nuts, a strawberry with a twig stuck through it, a lemon, an apple on a stick, a coconut, an acorn squash, a pumpkin — in this engaging program. It is both an explanation of Newtonian laws of motion and a celebration of human curiosity and resourcefulness.