Northern China smog closes schools and airport in Harbin

Smog has choked China's northern city of Harbin, Heilongjiang province, forcing schools and highways to shut and disrupting flights on Monday. The density of airborne particles was several times above World Health Organisation recommended limits. via Pocket http://www.bbc.co.uk/news/world-asia-china-24579101#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa