Mercury contamination found at more ancient Maya sites

Mercury contamination has been discovered at additional ancient Maya sites, extending its reach beyond previously known locations like Tikal. Two sites in Mexico's Yucatan peninsula, Coba and Xcach, were examined, revealing mercury spikes at various times during the Classic Period. Coba experienced contamination from around 250 AD for about 150 years, while Xcach showed spikes from 125 AD to 200 AD, followed by two more spikes during the Classic Period and one at its end.

The study, published in Science Advances, highlights that mercury levels at these sites exceeded modern toxicology and pollution regulations. Researchers warn that mercury may have been consumed by the Maya people through water or fish, potentially harming their health. While the study does not directly link mercury to the fall of Maya cities, it adds another environmental stressor to the list already attributed to the end of the Classic Period.