>> perfectly fits the historical under 25-year-old arch. every night it pops up and transforms the station into rainbow station. >> wow. all of these are the brain children of don ruskart. artist, innovator, and willie wonka of home improvement. some of his invexes are whimsy. others are to save us from ourselves. >> this is a smoke free tower. it sucks up air and purifies it. playgrounds that are 75 more clean than the rest of the city. and this is the stuff we are sucking up from the sky. >> no kidding. >> it's disgusting. we looked at this bag an stuff and realized that 42% of this is made out of carbon, and carbon