Why is sand vanishing from the world?

Sand is used to build almost everything, including our roads and buildings. Rapid development in China and India has made sand such a precious commodity that sand mafias have cropped up.

Credits

Guest:
David Owen - New Yorker magazine, Author

Host:
Madeleine Brand

Producers:
Sarah Sweeney, Michell Eloy, Amy Ta, Christian Bordal, Gina Pollack