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News Release 13-078
'Dark Oxidants' Form Away from Sunlight in Lake and Ocean Depths, Underground Soils
New findings overturn understanding of light-dependent environmental oxidants
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![lake with vegetation and a bridge Elkhorn Slough, Calif.](/news/mmg/media/images/dark_oxidants1_f.jpg)
Superoxide-producing bacteria live in dark places like the depths of Elkhorn Slough, Calif.
Credit: Scott Wankel, WHOI
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![colonies of superoxide-producing bacteria growing on laboratory plates with dye](/news/mmg/media/images/dark_oxidants2_f.jpg)
Dyes are added to colonies of superoxide-producing bacteria growing on laboratory plates.
Credit: Tong Zhang, WHOI
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![Bacteria that make superoxide are grown in flasks filled with seawater](/news/mmg/media/images/dark_oxidants3_f.jpg)
Bacteria that make superoxide are grown in flasks filled with seawater from ocean depths.
Credit: Julia Diaz, WHOI
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![Laboratory instruments measuring bacteria-produced superoxidants](/news/mmg/media/images/dark_oxidants4_f.jpg)
Superoxide produced by millions of bacteria is measured by laboratory instruments.
Credit: Julia Diaz, WHOI
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![Close-up image of a colony of bacteria shows a dye that that binds only to oxidants.](/news/mmg/media/images/dark_oxidants5_f.jpg)
Close-up image of a colony of bacteria shows a dye that that binds only to oxidants.
Credit: Tong Zhang, WHOI
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![cover of Science magazine](/news/mmg/media/images/science_cover_130503_f.jpg)
The researchers' results are described in the May 3rd issue of the journal Science.
Credit: Copyright AAAS 2013
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