How the scramble for sand is destroying the Mekong
Image copyright Jim Best (University of Illinois) Image caption Desert sand is too smooth to bind to make concrete, so sand is taken from river beds such as the Mekong
A crisis is engulfing the Mekong River, its banks are collapsing and half a million people are at risk of losing their homes.
The entire ecosystem of this South East Asian river is under threat, all because of the world’s…
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