Nature, Published online: 14 October 2026; doi:10.1038/s41586-026-11065-7

The mechanical properties of medium-entropy alloys at 20 K show a plateau in tensile yield strength and fracture toughness as a function of temperature, with no apparent ductile-to-brittle transition.

Nature, Published online: 14 October 2026; doi:10.1038/s41586-026-11174-3

Optogenetic stimulation of motor-cortex neuron ensembles shows that precisely timed activity in the primary motor cortex can generate learned neural patterns and movements, demonstrating an active role in skilled motor control.