The World Is Built on Sand… and We’re Running Out
91606 The World Is Built on Sand... and We're Running Out

The World Is Built on Sand… and We’re Running Out

Some might call sand coarse, rough and irritating, but there’s no denying that it’s used everywhere: from glass to asphalt, sand is a key ingredient for all sorts of materials in construction and technology. But this heavy reliance on sand means that we’re also reaching a limit on this seemingly infinite resource. Hosted by: Hank Green SciShow has a spinoff podcast! It's called SciShow Tangents. Check it out at
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