Most solid materials we rely on, from steel, to plastics and ceramics, are designed to have specific properties. Whether a material is soft and flexible, or stiff and tough depends on how molecules ...

The Sun's internal structure shows subtle changes even during the calmer phases.

Human-made metamaterials with messy internal designs may be more resistant to damage than those with neatly patterned structures. Metamaterial lattices, usually composed of struts that form identical, ...