Prehistoric miners extracted red ochre in Greece at least 28,000 years ago, according to a study published in Archaeological and Anthropological Sciences. Researchers dated underground workings on Thasos island to the Gravettian period of the Upper Paleolithic, placing activity...
Researchers have uncovered the earliest known use of blue indigo dye by humans, pushing back the timeline of plant-based dyeing practices to 34,000 years ago. Traces of the dye, chemically identified as indigotin, were found on stone tools unearthed...
