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Extreme Life and Environments
vent fluids


Hydrothermal vent fluids contain about one million times more iron than regular ocean water, but the iron pumped out has always been thought to immediately form mineralized particles when it mixes with seawater. Brandy Toner and colleagues found that some of the iron remains in a form that organisms in the ocean crave. Credit: Olivier Rouxel, Woods Hole Oceanographic Institution

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