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Barley sprayed with pesticide Christopher Pillitz/Getty Images

如何养活世界

布拉格—从远古时代开始,饥饿一直困扰着人类。几乎所有主要社会都受到饥荒影响;有人估算,从公元前108年到公园1911年间,每一年中国都至少有一个省出现旱灾或洪灾导致饥荒的情况。但与饥饿的斗争是一场人类最终能够取得胜利的斗争。

二十世纪最后四分之一的谷物年产量要比此前任何一个时期都要高,而今年的谷物产量更是要高于历史上任何一年。自1992年以来,全球饥民数量减少了两亿多,尽管人口数量增加了近二十亿

但仍有诸多挑战。平价营养食物是所有人类最要紧的事,而有九分之一的人类仍然无法获得足够的食物保持健康。今天的73亿人口预计到2030年将变为85亿,到2050年将变为97亿,食物需求也将相应增长。随着有更多的肚子需要填饱,食物供给的压力将来自冲突、经济动荡、极端天气事件、气候变化等。

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