The world is running out of sand, and you need to care
You're probably thinking the same thing I was when I first heard of a global sand shortage: "I've seen massive deserts. How are we possibly running out of sand?" It's not a stretch to say that sand is the foundation of our cities. It's a key ingredient in the concrete we use to construct highways and buildings. We use it to make glass. It's even in the chips that power our phones and computers. We use 50 billion tons of sand every year. And it turns out that not all sand is created equal.
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