Demand for sand has surged in the last two decades, thanks to urbanisation and construction in China, India and other fast-developing countries. China already has used more cement in 10 years than was used in the United States during the entire 20th century. (3/7) https://t.co/pq1TOwiJAh
It’s hard to imagine a shortage of sand in the world. But desert sand is useless for construction. The grains are too small and smooth for binding in concrete. The sand that’s ideally sized and shaped for construction comes from shorelines and the beds of rivers and lakes. (4/7) https://t.co/AWGKTmrCY0