Weird stuff happens when water hits hydrophobic substances. In this case, water and hydrophobic sand turn into a “liquid marble” in this video. It’s like watching the T-1000 get mobbed by fire ants.

Both extremes in soil have their advantages and shortcomings. These soils act the way they do mostly because of the size of the particles that make them up. Sand particles are relatively large (by ...

Part of the fun of experimenting with granular materials, says Stephen W. Morris, is the showmanship. In one stunt that he has demonstrated in settings ranging from high school classrooms to ...

Both extremes in soil have their advantages and shortcomings. These soils act the way they do mostly because of the size of the particles that make them up. Sand particles are relatively large (by ...