A general view of the CCTV towers, headquarters of China Central Television, in Beijing 24 hours later, on January 13, 2013. Over the weekend, the air quality index registered as high as 755 in Beijing. New York City, by comparison, registered a level of 45 on Monday. - 

Air pollution in Beijing was so bad over the weekend that the city ordered all government vehicles off the road and some state owned enterprises were shut down to try and prevent the situation from getting worse. The pollution was around 40 times worse than limits set by the World Health Organization. Rob Schmitz talks with host Jeremy Hobson about the economic impact of China's bad air.

Follow Rob Schmitz at @rob_schmitz