CHICAGO — One of the more recent developments in sunscreen technology is the addition of iron oxide to mineral sunscreens. Iron oxide is "an excellent pigment" that absorbs and blocks visible light, ...

Social media users have shared videos showing black material in the gel capsule for the antibiotic flucloxacillin, which appears to be attracted to magnets when dissolved in water. The capsule shell ...

Ancient copper smelters may have accidentally set the stage for the Iron Age. At a 3,000-year-old workshop in Georgia, researchers discovered that metalworkers were using iron oxide not to smelt iron ...