We are running out of sand to make cement and concrete [1]. 1: https://www.newscientist.com/article/2313170-we-are-running-out-of-sand-and-global-demand-could-

We are running out of sand to make cement and concrete [1]. 1: https://www.newscientist.com/article/2313170-we-are-running-out-of-sand-and-global-demand-could-soar-45-by-2060/ https://www.newscientist.com/article/2313170-we-are-running-...