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iron

Algae in the Great Calcite Belt may play an important role in fluctuating atmospheric carbon levels.
Posted inResearch Spotlights

Tiny Creatures Form Massive, Bright Ring Around Antarctica

Sarah Stanley, Science Writer by Sarah Stanley 26 January 201727 September 2022

Dense algae populations in the Great Calcite Belt could cause carbon dioxide release from the ocean into the atmosphere.

Posted inNews

Iron Fertilization Might Not Make Oceans Better Carbon Sinks

by S. Kelleher 5 February 20161 March 2023

New research suggests more iron during the last ice age did not mean more algae production in the equatorial Pacific, pointing to possible futility of a controversial geoengineering idea.

Posted inNews

Cave-Dwelling "Slime Curtains" Cycle Nitrogen and Iron

Cody Sullivan by C. Sullivan 4 November 201512 April 2022

In a cave accessible only by daredevil divers, extraordinary microbial colonies metabolize nitrogen and iron nutrients and possibly remove pollutants from water.

Posted inResearch Spotlights

The Enigmatic Core Properties of the Inner Earth

by S. Palus 28 October 20158 July 2024

A new study explores the possibility of cubic iron alloy structure at our planet's core.

Posted inResearch Spotlights

Microbial Communities Form Iron Shells in Abandoned Mines

by David Shultz 10 September 201510 November 2022

Fungi and bacteria deposit metal ions on steel objects left behind by miners. These metals form strange clam-like shells on the steel surfaces.

Posted inAGU News

McKnight Receives 2014 Hydrologic Sciences Award

by AGU 2 April 20155 May 2023

Diane McKnight received the 2014 Hydrologic Sciences Award at the 2014 American Geophysical Union Fall Meeting, held 15–19 December in San Francisco, Calif. The award is for outstanding contributions to the science of hydrology.

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Features from AGU Publications

Research Spotlights

What Could Happen to the Ocean’s Carbon If AMOC Collapses

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Editors' Highlights

Frictional Properties of the Nankai Accretionary Prism

11 December 20259 December 2025
Editors' Vox

Hydrothermal Circulation and Its Impact on the Earth System

3 December 20253 December 2025
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