Prior to Olympics, pollution a major concern in Beijing

With just 11 days to go for the biggest sporting extravaganza to unfold in Beijing, the air quality in and around the city is still a major concern.

On sunday the two main venues, the 'Bird's Nest' and the 'Water Cube were covered in smog, making them invisible from just 800 metres.

Despite drastic pollution-control measures that have been in effect for a week, Beijing's air quality doesn't seems to have improved.