Brazil tackles illegal miners, but finds their mercury legacy harder to erase

Mongabay
Mar 16, 2023, 3:15 pm165 pts
In 2015, researchers in Brazil started a project to address a tricky challenge: Reducing exposure to mercury contamination in the region of the Tapajós River, a major tributary of the Amazon. Artisanal miners use the heavy metal to separate gold from ore, then burn it off. The waste mercury then ends up in the…

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