A U.N. report on Tuesday called for urgent action to avert a 'sand crisis,' including a ban on beach extraction as demand surges to 50 billion tonnes a year amid population growth and urbanisation.
A worker operates a front loader in an area cleared for sand mining on a dried lake bed of Poyang Lake in Jiujiang, Jiangxi province, China December 11, 2019. REUTERS/Aly Song/File PhotoGlobal sand use hits 50 bln tonnes a yearSome rivers flow backwards, deltas sink
Sand is the most exploited natural resource in the world after water, but its use is largely ungoverned, meaning we are consuming it faster than it can be replaced by geological processes that take hundreds of thousands of years, the U.N. Environment Programme report says.
In a Sri Lankan river, sand removal had reversed the water flow, meaning that ocean water was heading inland and bringing salt-water crocodiles with it, he told journalists.
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