Just to add more data pointsto the discussion, here is a discussion surrounding concrete consumption due to roads. http://reason.org/news/show/what-the-us-can-

Just to add more data pointsto the discussion, here is a discussion surrounding concrete consumption due to roads. http://reason.org/news/show/what-the-us-can-learn-from-chinas-h http://reason.org/news/show/what-the-us-can-learn-from-china...