Bellingham, Wash., is paving its streets with new road material that’s partially made up of ground-up porcelain toilets diverted from the landfill. For this innovation, the city received the first-ever “Greenroads” certification by the Greenroads Foundation, based on LEED-like standards designed for roadways.

Besides “poticrete,” which is what Bellingham calls its toilet-derived pavement, the city used recycled asphalt to make a porous pavement that “naturally treats runoff and provides effective stormwater management,” according to Grist. The streetlamps use low-energy LED bulbs.