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Economy

Asia's megacities are running out of water

Women wash kitchenware in a Kolkata slum. (Photo by Simon Roughneen)

Asia's cities are ballooning, and the accompanying upsurge in the consumption of water and production of waste in urban areas is placing new pressures on the environment.

Home to 53% of the world's urban population, Asia has the highest concentration of megacities, including Shanghai, Tokyo, Karachi and Beijing. Not only are Asia's cities big and numerous, they are among the most polluted. The urban explosion has made providing safe water and sanitation a massive challenge for the region.

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