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 ...

Ezekiel McDowell has been obsessed with speed for as long as he can remember. His favorite superhero growing up was The Flash and he says he can solve a Rubik’s Cube in under 30 seconds. But for the ...

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.