Tourists visit the Tiananmen Square where smog persists on July 28, 2008 in Beijing, China. Pollution levels remained high just 11 days before the Olympics. The Chinese capital considered banning 90 percent of private cars from its roads and closing more factories in a last-ditch bid to clear smoggy skies for the Olympics, according to state media reports.
Smog persists in Beijing's Tiananmen Square 11 days before the Games.
Photo by Andrew Wong / Getty Images
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