The Economist Video - Why is sand in short supply?

Industrial sand and gravel are the world’s most extracted materials. They are essential for the production of cement, concrete and asphalt. This video provides a background on the use of sand and gravel, and discusses why the demand for sand and gravel is rising. It also provides an overview of the issues with sand supply, and highlights that reserves are being depleted quicker than they can be replenished. It indicates that as sand availability decreases, extracting it will be more difficult, more expensive, and more damaging to the environment. It finishes by indicating that we may have to reduce our reliance on sand in the future.