This is what it's like to breathe in polluted cities
Pollution in England, Brazil, China and India can now be experienced by visitors attending climate talks in Madrid, in an effort to raise awareness against the negative health effects of smog.

Foreign tourists wearing face masks against air pollution visit the promenade on the Bund in heavy smog in Shanghai, China, 3 January 2016. Source: AAP Image/Zhong Yang/AP
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Source: SBS News