On: Is the world really running out of sand?

[snypher]

What about eg air, wood? Used by mass or volume or?

[smt88 → snypher]

It seems likely to me that both concrete and plastic are used in greater mass and greater volume than wood.

[alex-moon → smt88]

Yes sorry I didn't cite my source - it is per weight: https://www.sciencedirect.com/science/article/abs/pii/S13506...

Per tonne, twice as much concrete is used per year than all other building materials (including wood, plastic, metal) combined.

[jballanc → smt88]

And concrete dates back to (at least) Roman times

[orthoxerox → jballanc]

Roman concrete was a drop in the water compared to the modern era concrete.