Over at WorldChanging, Mara Hvistendahl asks: “As an amateur runner in Shanghai’s half-marathon on Sunday, I wasn’t overly concerned with my time. But what was I doing to my lungs?” Her answer is an interesting essay that touches on Beijing’s efforts to improve its air quality in advance of the Olympics, what it feels like to run a quarter mile behind a diesel-spewing bus, and Shanghai’s dubious marathon route. Recommended.
