Ancient Maya's red pigment left toxic mercury legacy, new study finds
Ancient Maya civilization used a red pigment made of mercury-rich cinnabar for decoration and rituals. This practice led to significant mercury contamination of nearby lakes and ecosystems. Research indicates that ris...
# Ancient Maya red pigment linked to lasting mercury pollution Study found mercury pollution in lakes near ancient Maya settlements in Mexico's Yucatán Peninsula. Researchers examined sediment cores from Lago Cobá and Cenote Xcach and found concentrations above modern sediment-quality thresholds during parts of the Classic Maya period, around 250 to 920 CE. The research links contamination to cinnabar, a mercury-rich red mineral used in decoration and burials. High mercury periods coincided with declines in aquatic-life indicators, including algae and small organisms. Mercury toxicity added to pressures such as drought and deforestation. The study discusses possible health risks but does not establish specific illnesses. **Source:** PNAS study; Times of India **Original report:** https://timesofindia.indiatimes.com/science/archaeology/ancient-mayas-vivid-red-pigment-a-toxic-legacy-of-mercury-contamination-revealed-in-new-study/articleshow/135640059.cms **Published:** 8 November 2026