For most visitors, Omaha Beach appears much as any broad stretch of northern European coastline might. The tide advances and retreats, families wander across the sand, and the horizon seems distant ...

Designer Marcelo Coelho and artist Vik Muniz have teamed up to etch microscopic castles onto single grains of sand in a painstaking art project -- more than four years in the making -- called ...

Scanning electron microscopy reveals the shape and texture of a quartz sand grain from the Mississippi River. The pictured sand grain is about 200 micrometers in length. (Image credit: Michael Hasson) ...