Editor’s note: This segment was rebroadcast on Sept. 30, 2025. Click here for that audio. In the early 2000s, thousands of U.S. schools had their students race the clock to stack cups in gym class.

SUTHERLAND - Cup Stax, Cup Stacking, Speed Stacks, Sports Stacking - all are names for a relatively new sport. None of the names really describe this physical and mental activity that amazes viewers ...

It was “stack up” day at McDonald Elementary School on Thursday. The 166 McDonald students joined youngsters from around the country and the world for Guinness World Record Day, hoping for a record ...

MOLINE -- There was no speed limit at the cup-stacking competition Tuesday afternoon at Wharton Field House. The fastest kids turned the brightly colored cups into blurs as they stacked them into ...