Human pollution found in oceans’ deepest trench

Researchers from the University of Aberdeen, Australia, conducted deep-sea pollution research in 2014 in the Mariana Trench – down to 10,000m below surface levels.

http://www.abc.net.au/news/2017-02-14/earths-deep-ocean-mariana-and-kermadec-trenches-highly-polluted/8260168

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