“When they learn a new trick, you can just ... “The yo-yo is a cool thing!” Based on the laughter and joy in the room, it’s easy to see the kids love the club, and they love their teacher.

A new Yo-Yo World Champion has been crowned in Prague, and this year's winner was a 17-year-old from Chico, Calif. (first spotted on Gizmodo). As you can see from Stein's winning freestyle (video ...