Toxins in ocean fish drop dramatically in last 40 years

The level of mercury has dropped 50 percent in ocean fish and the level of polychlorinated biphenyls (PCBs) has fallen more than 90 percent in the last 40 years, according to a new review by researchers at the Scripps Institution of Oceanography in La Jolla, California. Other toxins, including DDT, also are showing up far less in… » Read More

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