Fix farms in a few countries and feed 3 billion people

New Scientist: Give us the right levers and we shall feed the world. The lion's share of the world's food production problems stem from just a handful of countries. If we could concentrate on these problem areas, we could potentially feed 3 billion more people and massively reduce the environmental damage from farming. "The way we're growing agriculture right now is totally not sustainable," says Paul West of the University of Minnesota in St Paul. West and his colleagues looked for "leverage points": areas......

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