Category Archives: Soil

Montgomery in “Dirt: the erosion of civilizations” estimates topsoil depletion is usually one of the main causes of collapse. In the past this took on average 1500 years, but industrial farming is depleting soil in centuries: Iowa topsoil has gone down by half in just 100 years.

Inside North Korea’s environmental collapse

The reddish hue of exposed soil in North Korea indicates a lack of organic matter, which is vital for farming. [ Related posts: Book review of “In order to live: A North Korean girl’s journey to freedom” by Yeonmi Park … Continue reading

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Rapid Population Growth in California: A Threat to Land and Food Production

David & Marcia Pimentel. June 2, 2008. Rapid Population Growth in California: A Threat to Land and Food Production. Cornell University, College of Agriculture and Life Sciences Are Californians —who are now coping with overcrowded cities, jammed highways, and a … Continue reading

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