| http://www.w3.org/ns/prov#value | - It involved 170 researchers who produced 35 peer-reviewed papers after taking more than 300,000 measurements, including samples from birds, fish and sediment.The overall decline in mercury contamination is ???very welcome news,??? said study co-author James Wiener of the University of Wisconsin at La Crosse.But reasons for concern remain, he said.
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