Mercury
QuicksilverHg
Heavy Metal / Environmental Contaminant
Mercury is a shiny, silvery liquid metal found naturally in the environment, but it can also be released by human activities. It can be very harmful to people and animals, especially if too much gets into our bodies.
High Concern
Source: World Health Organization (WHO), U.S. Environmental Protection Agency (EPA)
Mercury is a potent neurotoxin that can cause severe damage to the brain, kidneys, and developing fetus, even at low exposure levels.

What is Mercury Poisoning? | National Geographic
National Geographic
r/Yellowjackets
2911
A theory I haven't seen yet - mining and mercury poisoning
Last updated: May 16, 2026