å°ãåã«å°ççæ¡ä»¶ã¨çµæ¸æé·ã®é¢ä¿ã«é¢ããã¢ã»ã¢ã°ã«ï¼ããã³ã½ã³ã¨ã¸ã§ããªã¼ã»ãµãã¯ã¹ã®è«äºãç´¹ä»ãããããµãã¯ã¹å´ã«æå©ã¨ãªããããªç 究ãEurekAlertçµç±ã§Economist's Viewãç´¹ä»ãã¦ããã 以ä¸ã¯ããã§ç´¹ä»ããã¦ãã27æ¥ã«åºçãããã°ããã®PLOSã®ãªã¼ãã³ã¢ã¯ã»ã¹è«æã®èè è¦æ¨ã While most of the world is thought to be growing economically, more than one-sixth of the world is roughly as poor today as their ancestors were hundreds of years ago. The extremely poor live largely in the tropics. This latitudinal gradient in
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