UC Santa Barbara researchers now know why a pool of red dye somehow “knew” how to solve a maze filled with milk.

Researchers discovered that ink in a soap-and-milk experiment follows the path of least resistance due to surface tension ...

An "intelligent" liquid that has baffled scientists due to its ability to "choose" its own path to solve a maze has finally ...

Prior research has shown that droplets with a surface tension lower than the surface tension of surrounding fluid will spread rather than mixing, a phenomenon known as the Marangoni effect.

Surface tension -- the cohesion that causes molecules on the surface of a fluid to pull together and act like a membrane, resisting exterior forces -- plays a large role in this ink-on-milk ...