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The World Needs Topsoil to Grow 95% of Its Food -- but It's Rapidly Disappearing | The Guardian

2019-05-30 00:00:00

Thanks to conventional farming practices, nearly half of the most productive soil has disappeared in the world in the last 150 years, threatening crop yields and contributing to nutrient pollution, dead zones and erosion. David Montgomery, professor of Earth and space sciences at the UW, is quoted.

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