FFS, Now We're Running Out of Sand - Mother Jones

We are running out of sand. No, really, and here's a chart to prove it: Now wait a second. The Sahara Desert is brimming with sand. Why can't we use that? Desert sand grains are too smooth to be useful, and most of the angular sand that is suitable for industry comes from rivers ....
https://www.motherjones.com/kevin-drum/2019/07/ffs-now-were-running-out-of-sand/