Wherever you go in the world, roadsides are rarely pristine. Various detritus including bits of cardboard, dust, glass, grit, metal, paper, plastic, leaves, wood and other organics often accumulate on highways. For this reason, street sweeping machines are commonplace on Australian streets, but what happens to the material they collect? Normally it is just seen as an irritation with landfill as the most suitable destination. In the past, there’s been little reason to view it any other way. Sorting through the volume and variety of material just hasn’t been worth the time, effort or cost. Read more
