Way Dynamic

Researchers with the American Physical Society report generating water waves that arrange themselves into quasicrystalline patterns — ordered structures that never repeat, previously seen mainly in certain alloys and crystals. The work extends quasicrystal physics to fluid dynamics, offering a new way to study these unusual symmetries in a tabletop experiment. Physicists are highlighting it as a striking demonstration of exotic order in an everyday medium.

Saudi Arabia still has no diplomatic relations with Israel, but its airspace rules have changed. Until 2022, Israeli airlines and Israel-bound flights were barred from entering Saudi airspace, and the kingdom's leading aviation operator, Cluster2, said coordination was under way to handle flights. The opening is being discussed as a sign of shifting dynamics in the region.