PhysicsSteel foil coated with nanowires does backflips out of water Extremely thin and water-repellent steel wafers not only float when submerged, they harvest power from surface tension and leap out of water News
TechnologyShould you worry about glass bridges after one shattered in China? High winds are reported to have broken a glass-bottomed bridge in China, leaving a man clinging to a handrail above a 91-metre drop – but just how safe is glass as a bridge-building material? Analysis