Telegraph: Huge dust clouds swirling across the Atlantic from northern Africa to South America are pictured in stunning new images released by the US space agency Nasa that illustrate how Earths largest tropical rainforest relies on its biggest, hottest desert to flourish.
Scientists have now for the first time calculated how much dust makes this transatlantic journey from the Sahara to the Amazon basin where it fertilises depleted soils with life-sustaining nutrients.
Some 27.7 million tons of Saharan...