More than 1,000 scientists, academics, environmental managers and policymakers are at the conference, which ends Friday. The conference is focusing on several aspects of the toxic metal, including sessions on exposure through seafood.

The nonprofit CCF contracted with an independent laboratory to test 142 samples of canned tuna, fresh fish, sushi, and restaurant fish from 38 different Madison locations. Using published mercury standards from the Food and Drug Administration (FDA) as a guide, CCR reports that every sampled fish was declared safe to eat.

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