Cape Town faces the unenviable situation of being the first major city in the modern era to run out of drinking water.
However, the plight of the drought-hit South African city is just one extreme example of a problem that experts have long been warning about – water scarcity.
Despite covering about 70% of the Earth’s surface, water, especially drinking water, is not as plentiful as one might think. Only 3% of it is fresh.
Over one billion people lack access to water and another 2.7 billion find it scarce for at least one month of the year. A 2014 survey of the world’s 500 largest cities estimates that one in four are in a situation of “water stress”
According to UN-endorsed projections, global demand for fresh water will exceed supply by 40% in 2030, thanks to a combination of climate change, human action and population growth.
It shouldn’t be a surprise, …
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