Archaeologists say they have discovered the oldest known evidence for intensive ochre mining worldwide, at least 48,000 years ago, in Lion Cavern at Ngwenya...
Researchers at Stanford University have found that an aqueous solution of a common food color approved by the U.S. Food and Drug Administration, tartrazine,...
Colored dyes were a significant commodity in the Mediterranean region during the Late Bronze Age.
Berger et al. unearthed a purple-dye workshop in Area...
