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.
Seven hundred athletes converged in Denver for the 2009 World Sports Stacking Championship. It looks simple but the sports demands agility, focus and hand-eye coordination. Stephanie Simon reports ...
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