Lightly mix some sand and water. When we grasp a handful of sand, it slips through our fingers like time or thoughts on a windy day. The grains scatter, carried by breezes, destined for far-off dunes or the soles of sandy toes. But something changes when we add just a bit of water. Suddenly, the sand isn’t just slipping; it’s shaping. A castle begins to rise, spired and spirited, just waiting for a kid’s joyful squeal of pride. The Secret Science of Magic Mud It’s surface ten
