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Tim Radford – Africa’s dust is a priceless export

Scientists show how different the world would be without a sprinkling of the wind-borne African dust that fertilises oceans and forests. LONDON, 3 December, 2016 − Climate scientists have identified Africa’s single biggest export – the wind-borne dust that fertilises the Amazon forests, nourishes life in the Atlantic ocean and softens the noonday blaze of the sun. And they have …