Physics Acoustics

Rust usually takes months or years to form naturally, but researchers at Tohoku University found a way to speed it up dramatically. By blasting iron powder in water with ultrasound, they triggered the formation of spinel-type iron oxide nanoparticles in as little as 24 hours, no chemicals required. The technique could offer a greener route to materials used in magnets, catalysts, and biomedical applications.

New study explains why too much ultrasound slows chemical reactions

Seaweed helps brain health, Whales in long-distance relationships, Jumpstarting male fertility, Demystifying black hole turbulence, Shrimp to steel & Mpox Resources. Read all in the latest Editor's Choice.

Applying chaos theory to the movement of iconic arctic whales uncovered a 24-hour diving cycle and a long-range (~100 km) synchronization.

Researchers from The University of Tokyo Institute of Industrial Science find that drones may be the next generation of communication bases to monitor the ocean and seafloor because of their high-speed positioning, stability, and efficiency.