Thick smog shrouds cities in China

Video. Thick smog shrouds cities in China

Beijing and other cities across northern and central China were shrouded in thick smog Monday and Tuesday prompting authorities to delay dozens of flights and close highways.

Beijing and other cities across northern and central China were shrouded in thick smog Monday and Tuesday prompting authorities to delay dozens of flights and close highways.

A 12-second time-lapse footage shows the moment when the smog engulfs the city of Beijing in the latest bout of air pollution.