Category Archives: Peak Topsoil

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: Midwestern topsoil has gone down by half in just 100 years, the best soil in the world.

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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