Over half the world's population lives in urban areas, and this is expected to increase to 69 percent by 2050.

世界上有超过一半的人口生活在城市地区，这部分人口预计将在2050年增加到69%。

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That increase will come partly from a growing amount of waste generated per person but mainly from a rising urban population.

垃圾增多部分来源于人均垃圾的增加，而整体的增长是源于人口的增加。

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Over the past 15 years, Manila's growing urban population has demanded a significant increase in water supply and sanitation services and facilities.

过去十五年间，马尼拉城市人口不断增长，对供水和环卫服务和设施的需求大幅增加。

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Six more years of Chavez could potentially push production even lower, which, in the context of a growing global, and specifically urban, population, means demand for oil should increase as supply is sliding.

FORBES: What Chavez's Reelection In Venezuela Means For Global Oil Markets

Universal service funds (USF) are set up by levies on telecoms in individual countries, which are then used to increase consumer access based on criteria such as income distribution, rural and urban population ratios, literacy and geography.

BBC: Rural and poor mobile access funds 'not being spent'