13 California teenagers collect 22,000 discarded tennis and pickleballs in just 24 hours to set a Guinness World Record;

Another Bounce: How a student project to collect discarded tennis and pickleballs became a world record

Why discarded tennis balls and pickleballs are an environmental concern

How the collected sports balls will be recycled

Teenagers push local authorities to address sports waste

Habits of Waste and its wider environmental campaigns

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