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Earth Policy Institute: Podcast

Jul 12, 2011

After the earth was created, soil formed slowly over geological time from the weathering of rocks. It began to support early plant life, which protected and enriched it until it became the topsoil that sustains the diversity of plants and animals we know today. Now the world’s ever-growing herds of cattle, sheep, and goats are converting vast stretches of grassland to desert. For full report, visit the EPI website.