Smog, originally uploaded by quadriman

Alcoa has come up with a new coating for aluminum panels that interacts with sunlight and breaks down nitrogen oxide (a smog-producing compound) and renders it completely harmless. Panels coated with EcoClean will only cost about 5% more than those that are already being used and even though it takes 10,000 square-feet of the stuff to have the air-purifying effect of 80 trees, it’s a step in the right direction.

Hat Tip: