Trees 'boost African crop yields and food security' - BBC News - discu.eu

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Nitrogen Fixing trees boost crop yields in Africa http://www.bbc.co.uk/news/science-environment-15305271 32 comments 16/10/2011 science

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Forests the size of France regrown since 2000, study suggests - BBC News https://www.bbc.co.uk/news/science-environment-57065612 30 comments

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