In this episode of Wow, I Never Knew That, it's cheesy and delicious and eaten all over the world. You'll learn how DOMINICK'S PIZZA became DOMINOS PIZZA plus many other made to order, mouth-watering tidbits. And we all know how going to a circus wouldn't be complete without fluffy sweet COTTON CANDY. We'll explain how this feathery goodness SPUN to life. And all the spy action heroes use them, but where did the term GADGET really come from? And what is the difference between GSM and CDMA? We've got your number with the answers.