Despite decades of pollution controls put in place to reduce mercury in the atmosphere, researchers have learned that tuna contains the same high levels of the toxic substance that it did 50 years ago. This likely comes from old accumulations of mercury, which is being stirred up to the shallower areas where the fish eat, per a new study published in Environmental Science & Technology Letters.
March 5, 2024
Mercury levels in tuna unchanged over decades, study finds
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