G ETTING rid of old tyres has long been a problem. Every year more than a billion reach the end of the road. Until recently, most were thrown into landfills or piled up in storage yards, which occasionally caught fire. Tougher environmental laws mean many countries now insist tyres are recycled. And they are, sort of. Some of the methods might be better than dumping them, but they are not especially green.
长期以来，摆脱旧轮胎一直是一个问题。每年都超过10亿，到达了这条路的尽头。直到最近，大多数人都被扔进垃圾填埋场或堆积在储物码中，偶尔着火了。艰难的环境法意味着许多国家现在坚持轮胎被回收。他们是。其中一些方法可能比倾倒它们更好，但它们不是特别绿色。
