Tiny spikes of copper, inspired by cactus thorns, have the ability to remove micro-droplets of oil in water, according to Chinese researchers, and could lead to more effective cleanups of oil spills. The researchers, who noted that the cone-shaped spines of cactus can harvest water from the air and move it to their base due to surface tension and the shape of the spines, emulated that natural design function in a new development using artificial … [Read more...]