We might not realize it but sand is in just about everything! And, it's becoming scarcer. Where is all the sand going? What could we replace it with? And, how do the sands by the beach and the sands in the desert differ?

Mike digs for answers with Vince Beiser, independent journalist and author of "The World in a Grain: The Story of Sand and How It Transformed Civilization."

Got questions? Email Mike at [email protected]