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http://www.vox.com/the-big-idea/2016/...l-conditions-charts-life-span-poverty
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http://modernfarmer.com/2017/02/reall...ouble-food-production-feed-world-2050
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https://reporterre.net/L-humanite-pese-trente-mille-milliards-de-tonnes
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https://www.lesechos.fr/monde/enjeux-...-de-personnes-2096592.php#xtor=CS1-25
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