The Washington Post reports: "Lawyer Wu Congsi has asthma and keeps air purifiers whirring away in his office, home and car to counter Beijing's hazardous smog. He prefers to stay inside unless the sky is blue. But this year, he's been able to regularly walk the 15 minutes or so to work. That's because of some good news that so far has gone little noticed outside of China: The air in Beijing — and across the rest of the country — has improved so far this year. 'I just feel generally better in terms of the air quality,' said Wu, 26. 'At least so far, this summer and this fall, it's actually better than last year — just more clear days than previously. I might go out hiking or maybe just stroll around the parks.'"