At high production speeds, the labels went on wrinkled and crooked ... room for illustrations and instructions. But a single stack of 12 cups didn’t. “That was part of the learning process ...

Here’s a glimpse into the world of competitive cup stacking. It’s not an Olympic sport. At least not yet. Imagine this sound -- clop, clop, clop-- multiplied by 300. That’s what Major Cheney ...

Yung-Deng Lin can stack a group of cups in about 1.6 seconds, an impressive time for a 7-year-old. To give an idea of how fast the child can stack cups, the World Sport Stacking Association ...