From recycling electronics to shredding sensitive documents, now recycling old tires can become easily maintained sidewalks. Sixty-five cities are reducing the number of old tires dumped in landfills. Companies shred them, bake the fine particles and the use the material for sidewalks. These interlocking panels have cracks between them to allow water and air to reach tree roots, which delays the upward thrust of the roots. When the roots do rise, the panels will not break, making repair easier. The cost of the rubber sidewalks is three times more than concrete, but in the long run it is less expensive...
