Karmienie ocieplający się i rosnący świat

The world's food system is dangerously out of balance, according to a prominent group of agriculture researchers.

And they say food security problems will only grow as the population increases and the climate changes.

In a new report ahead of this summer's Rio +20 U.N. Sustainable Development Conference, the experts deliver a roadmap for feeding the world on a warming planet.

The new report, by a commission of experts from 13 countries, highlights the tangle of contradictions in today's global food situation.

1 billion hungry, 1 billion overfed

"We have a billion people on the planet who are food insecure and a billion who are suffering from over-nutrition. We have possibly as many as a couple of billion more who are malnourished," says Molly Jahn, a member of the Commission on Sustainable Agriculture and Climate Change and an agronomist at the University of Wisconsin at Madison.

At the same time, she says, a third of the food produced for human consumption is wasted.

Meanwhile, agricultural production is a major contributor to climate change, which produces more frequent crop-destroying weather extremes.

With another 2 billion mouths to feed by 2050, and an increasingly wealthy world eating higher on the food chain, the commission says pressure on the food system threatens to push past what the planet can sustain. (...)

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