tennis ball: Tennis balls may take 400 years to decompose; Environmentalists, game's governing body clueless - The Economic Times

Tennis Ball Recycling Stanford All About No Waste Network

Ecological impact of tennis balls is out of bounds, environmentalists say - CBS News

Tennis ball wasteland? Game grapples with a fuzzy yellow recycling problem

TENNIS BALL AFTERLIFE – Defender

aonschwartz, Author at Mangoprism

TENNIS BALL AFTERLIFE – Defender

US Open tennis balls serving up controversy, and players injuries

Ecological impact of tennis balls is out of bounds, environmentalists say - CBS News

The ephemeral tennis ball: Addressing sustainability in sports