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Cup stacking speed challenge

Watch intense cup stacking action as players race to build perfect stacks. #FunChallenge #Skills #Competition Trump plans July 4 rally as polls show event backlash President Donald Trump's 7-word take ...
WBUR

Cup stacking: How the sport took off in the U.S.

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.