Study: Weather, not pollution controls, had bigger role in cleaning Beijing air for Olympics

BEIJING — Beijing’s notoriously dirty air was cleaner during last summer’s Olympic games, but pollution levels were still much worse than at recent Olympics, despite a massive Chinese cleanup campaign, a new report said.

Study: Weather played larger role in cleaning air for Beijing Olympics than pollution measures

BEIJING — Beijing’s notoriously dirty air got cleaner during last summer’s Olympic Games, but the weather played a larger role than the government’s massive pollution control measures, a new report says.