jymbee
Well-known member
The most-extracted solid material in the world, and second-most used global resource behind water, sand is an unregulated material used extensively in nearly every construction project on Earth. And with 50 billion metric tons consumed annually—enough to build an 88-foot-tall, 88-foot-wide wall around the world—our sand depletion is on the rise, and a completely unregulated rise at that.
https://www.popularmechanics.com/science/environment/a39880899/earth-is-running-out-of-sand/
https://www.popularmechanics.com/science/environment/a39880899/earth-is-running-out-of-sand/