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MASSIVE QUAKE ROCKS MEXICO: 7.2 Magnitude Hits Near Acapulco

Ventilation

Bay Area Research Finds Lack Of Fresh Air Makes Workers Sick

It’s a stunning statistic: Americans spend 70 to 90 percent of their life indoors. For millions of workers, most of that time is spent at the office. So what does that mean for your health?

KPIX 5–07/18/2011