Mr. Wizard, who ignited countless kids' interest in science, died today. May he have a happy, rewarding afterlife fraught with love and new, exciting experiments. As a tribute, my boyfriend and I are going to do his experiment where you slice a banana using only a needle and thread. Do you remember that episode where the kid put that powder on his hand, reached into the fish tank, and then pulled out his hand, which was NOT WET? I was so enthralled by this magic substance, which I learned today is lycopodium powder. Thanks, Mr. Wizard.