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. 2015 Oct 9;1(9):e1500675. doi: 10.1126/sciadv.1500675

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Copyright © 2015, The Authors

This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.

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Fig. 1 — Overlay is the estimated continental emission of Hg (in tons) based on “UNEP Global Mercury Assessment 2013: Sources, Emissions, Releases and Environmental Transport” (2). Diamonds represent pelagic ocean water samples, whereas circles represent all other samples. The abundance of Hg emissions and hgcA is colored according to the accompanying legend.