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

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

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