A huge cloud of choking dust is passing over South Korea as the first sand storm of the year blows in from China.South Korea has ordered schools to close and drivers in south-west Japan have been warned about low visibility from the dust clouds.
Every spring brings "yellow dust" storms which blow sand from China's Gobi Desert over the Koreas and Japan.
The dust storms have become more deadly each year as they pass over China's industrial zones picking up toxins.
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