The volcanic eruption that began in mid-September continues on Spain’s La Palma island. The movement has also triggered earthquakes on the island, which is part of the Canary Island archipelago west ...

The original version of this story appeared in Quanta Magazine. If you want to tile a bathroom floor, square tiles are the simplest option—they fit together without any gaps in a grid pattern that can ...

When a fake grid pattern is subjected to shear forces along a wall, both deformation and rotation result, exactly as seen in the recorded grids. Right panels show the effect on a square grid, middle ...