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.

SAN ANTONIO — Sport stacking has been around since the 1980’s. The goal is to stack plastic cups into a formation as fast as you can. Some fans play at home for fun. Others race the clock at sport ...

Christina Shi doesn't run short on talents. Ace student. Gifted musician. And, oh yes, the West Lafayette Junior High seventh-grader already is famous — for her cup-stacking skills. In 1.7 seconds, ...