A 13,000‑year‑old tool from a cave in central Germany has turned out to be far more than a simple piece of Paleolithic gear. Under a microscope, its surface revealed a vivid blue that should not have ...

Lightning first struck Mas Subramanian over 15 years ago. When he and his graduate student Andrew Smith put a mixture of rather mundane powders into the lab oven at Oregon State University, the pair ...

Scientists have discovered a rainforest fruit that exhibits an intense, metallic blue color without any pigment. This phenomenon is achieved through microscopic cellulose layers that precisely reflect ...