How close are we to the edge?

Living on Earth: GELLERMAN: A recent World Bank study notes that food prices have soared nearly 30 percent just in the past year. Meanwhile, many autocratic regimes in the Middle East that have ruled for decades have suddenly become unstable - as citizens take to the streets, demanding change. This is not a coincidence says Lester Brown, president of the Earth Policy Institute. He writes that rich nations are adding to the social instability when they buy up land in poor nations to guarantee their own food supply.......

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