The Dust Bowl of the 1930s was one of the worst man-made disasters in our history. Due to poor farming practices and many years of drought, topsoil in the southern plains turned to dust and blew away.
ROME, Dec 5 (Thomson Reuters Foundation) - Generating three centimeters of top soil takes 1,000 years, and if current rates of degradation continue all of the world's top soil could be gone within 60 ...
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