A nitrite-oxidizing enzyme may work in reverse for some microbes in the Antarctic autumn.
Global Biogeochemical Cycles
Posted inResearch Spotlights
Can Mangroves Buffer Ocean Acidification?
New research evaluates the ability of coastal foliage to influence the ocean's pH.
Posted inResearch Spotlights
Moored Ocean Buoy Tracks Marine Carbon Cycle Variations
Years of data from a North Pacific ocean station show that the ocean's ability to pull carbon out of the atmosphere is controlled by biological and physical processes that change between seasons.
Posted inResearch Spotlights
Soil Loses Pyrogenic Carbon by an Unexpected Pathway
Fresh insight into pyrogenic carbon disappearance suggests that erosion is not responsible.
Posted inResearch Spotlights
Tracking Carbon in the Alaskan Arctic
Researchers trace carbon through Arctic soils and find an unlikely source of methane and surprisingly low methane oxidation in watersheds throughout northern Alaska.
Posted inResearch Spotlights
Past Phosphorus Runoff Causes Present Oxygen Depletion in Lakes
Sediment cores show how phosphorus pollution in the 1950s led to current, inherited hypoxia in lakes in the Alps.
Posted inResearch Spotlights
Humans Greatly Increase Mercury Levels in the Ocean
A study of the natural cycle of mercury reveals that humans are to blame for a five- to sixfold increase in the oceanic concentrations of the potentially toxic element.
Posted inResearch Spotlights
How Much Carbon Dioxide Does Sunlight Release from Lakes?
A study of more than 1000 lakes in Sweden helps model sunlight's ability to drive greenhouse gas emissions.
Posted inResearch Spotlights
Ocean Carbon Uptake More Variable Than Previously Thought
Researchers create a global model of carbon dioxide absorbed by the ocean to get a better idea of how the greenhouse gas influences climate.
Posted inAGU News
New Editors for AGU Journals
AGU announces new editors for several of its journals.