Sand – Planet Snapshots

Where the Danube Meets the Black Sea (courtesy NASA Goddard Space Flight Center CC BY 2.0 via Flickr).

Sand. It’s coarse, rough, irritating, and it gets everywhere — perhaps more than you think. Sand is the second most used natural resource after water and the most extracted solid material, accounting for 85% of global mineral extraction. Like a messy trip to the beach, it has infiltrated our pockets and all our surroundings. It’s the key ingredient in cement, asphalt, glass, and silicon chips. Our cities are glorified sand castles, and our most advanced tech is built from this unimposing substance…