Dear Editor, I would be interested in reading any research on the process of grinding up old rubber tires to put on roads. This is a project becoming more and more prevalent in the Phoenix, Ariz., area. I don't know if it is just an experiment and they'll be waiting to see the longevity of the rubber, but I've got to tell you that the road noise difference is amazing! Driving on this surface is substantially quieter than on standard asphalt or concrete. I subscribe to Utne magazine through my nonprofit Bali Peace Pole Project and love reading every single page. Please add more stories of innovative practices like this [“Study: Parking Lots Pollute,” News, July 1], even if it's an experiment. And provide information (like in this article) of the environmental impact of new technologies.