Dragonfly Larvae Expose Widespread Mercury Contamination in Wildlife Refuges
JWM: Dragonflies make good mercury thermometers – Image for illustrative purposes only (Image credits: Unsplash) Mercury pollution reaches even the most protected corners of the United States, where it can harm fish, birds, and the people who rely on those ecosystems. A new study that sampled dragonfly larvae across 30 national wildlife refuges found that ...











