Why was a sustainable playground built on a Chinese mountain out of old bicycle tyres?

  • American materials science firm Dow, Chinese e-commerce platform Meituan and charity Yao Foundation team up to create more than 10 sports areas in rural communities
  • Cradle-to-Cradle initiative produces elastic, water-resistant material by upcycling unwanted polyurethane tyres as innovators also develop air-free foam alternative