Concrete, asphalt and other building materials – treated with PURETi and exposed to light - actively and continuously reduce the indirect greenhouse gases (NOx and SOx) and particulates (PM 2.5 and PM 10) that cause smog. The impact is powerful. One lane mile (or 6000m2) will remove one ton of NOx per year – year after year. This is the equivalent of planting x number of trees.