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1 " By 1900, European scientists recognized that unless a way was found to augment this naturally occurring nitrogen, the growth of the human population would soon grind to a very painful halt... After Nixon's 1972 trip the first major order the Chinese government placed was for thirteen massive fertilizer factories. Without them, China would have probably starved. "
― Michael Pollan , The Omnivore's Dilemma: A Natural History of Four Meals
