Bob Huhn is so helpful it's almost shocking, especially once a reporter becomes conditioned by futile efforts to get answers from state agencies, certain people at the city of Phoenix, and Governor Doug Ducey's office. Call Huhn, and he picks up the phone and is eager to answer questions. Email him, and he'll call you directly. Huhn can get a few air-quality experts on the line with you in the next couple of hours to answer any and all of your detailed questions about air pollution, like what ozone, PM2.5, and PM10 really are. He is sincere and eager but not simpering, and he's been known, on occasion, to take the liberty of filing public records requests on behalf of reporters. We wish every public information officer would be as responsive and dedicated as Huhn.