"Certain parts of Earth’s oceans are so oxygen depleted that they can hardly sustain life. Climate models predict that these “dead zones” will expand as global warming progresses, affecting ecosystems, fisheries, and the climate itself. Now Lengger et al. provide new evidence that such predictions do not adequately account for the activity of anaerobic microbes that consume inorganic carbon within dead zones."

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Lannoy, Charles-Francois de; Eisaman, Matthew D.; Jose, Arun; Karnitz, Stephen D.; DeVaul, Richard W.; Hannun, Kathy; Rivest, Jessy L.B. (2017): Indirect ocean capture of atmospheric CO 2. Part I. Prototype of a negative emissions technology. In International Journal of Greenhouse Gas Control. DOI: 10.1016/j.ijggc.2017.10.007.

"We present the design, construction, characterization, and analysis of a prototype process for a novel electrochemical platform of candidate negative emissions technologies (NETs), termed indirect ocean capture. The IOC technologies remove carbon dioxide gas from the atmosphere by leveraging both air-ocean gas exchange and the pH sensitivity of the ocean’s carbonate buffer system. The system characterized in this paper enables two configurations that capture CO₂ either as a pure gas or as a solid mineral."

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"Talk of dumping iron into the ocean off Chile to boost plankton is a return of a controversial idea that warrants questions, says Olive Heffernan"

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"To geochemist Greg Rau, the future looks like a seaside power plant. More specifically, it looks like a biomass combustion plant that’s actually carbon-negative because the CO2 emissions are dissolved and captured in a mix of seawater and alkaline minerals through a process called chemical weathering. Why does Rau want to see that plant erected, perhaps along the coast near UC Santa Cruz, where he works? Because he believes that energy generation can solve the problems created by energy generation. He believes that this is how you begin to turn back 150 years of carbon dioxide emissions before sea level rise engulfs the landscape and would-be power plant operators have to look for new real estate."

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