The Chinese capital was shrouded in a thick, gray haze of pollution Sunday, just 12 days before the opening ceremony of the Beijing Olympic Games, AP reported. The pollution was among the worst seen in Beijing in the past month, despite traffic restrictions enacted a week ago that removed half of the city's vehicles from roadways. Visibility was a half mile (less than 1 kilometer) in some places. During the opening ceremony of the Athletes' Village on Sunday, the housing complex was invisible from the nearby main Olympic Green.