In a first-of-its-kind discovery, archaeologists in China have unearthed the 2,200-year-old burial of a woman whose teeth had been painted with cinnabar, a toxic red substance. Cinnabar is a ...

Artificially prepared cinnabar is much preferred to the native; as a pigment, because of its freedom from earthy impurities, and it has long been an object of chemical manufacture, and is ...