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.

Balancing raw eggs might sound like a party trick, but for Mohammed Muqbel of Yemen, it's a record-breaking art form. The Guinness World Record for stacking eggs challenges competitors to balance one ...