Now China builds world's biggest 'air purifier'
January 16, 2018  16:56
'An experimental tower over 100 metres (328 feet) high in northern China -- dubbed the world's biggest air purifier by its operators -- has brought a noticeable improvement in air quality, according to the scientist leading the project, as authorities seek ways to tackle the nation's chronic smog problem,' reports Stephen Chen in South China Morning Post.   

'The seven-metre (23-feet) tall tower produced about eight cubic metres (282.5 cubic feet) of clean air per second. It was entirely powered by electricity, most of which is generated by coal-fired power plants in China,' he adds, here.
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