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China Blocks Smog Data After Failing to Clean Skies Before APEC

After failing to rid Beijing’s skies of pollution before a gathering of world leaders this week, Chinese officials took a different approach to smog control -- limit the data.

Phone and Internet apps that display readings of air pollution started excluding a U.S. Embassy feed yesterday. Wang Jun, co-founder of the Air Quality Index app for Apple Inc.’s iOS, said authorities told him to stick to the city’s data. “We had no choice,” he said by phone.