The "Wisconsin Winter Stack Up" hosted some of the country's fastest cup stackers. Sport stacking is a competition in which competitors stack specially designed cups up and down in set patterns. Speed ...

TOKYO (Reuters) - More than 100 people gathered to vie for the title of Japan's fastest hands, competing to stack a set of plastic cups into a pyramid in the shortest time possible. The 2012 Sport ...

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.