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“Before artificial nitrogen fertilizer became widely available, the world's population was around 2 billion. When we no longer have it - or if we ever decide to stop using it - that may be the number to which our own naturally gravitates.” — Alan Weisman
Before artificial nitrogen fertilizer became widely available, the world's population was around 2 billion. When we no longer have it - or if we ever decide to stop using it - that may be the number to which our own naturally gravitates.