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A man and dog sit on a pier before the Han river in Seoul on March 25, 2018. South Korea is bracing for days of poor air quality as rising seasonal temperatures and an unfavourable wind direction threatens to compound local pollution, resulting in government issued “fine dust” warnings with air quality monitoring websites reporting PM 2.5 levels of over 200, or “unhealthy” – eight times higher than the guideline limit for 24- hour exposure advised by the World Health Organisation (WHO). (Photo by Ed Jones/AFP Photo)
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