Mixed-valent iron [Fe (II)-Fe (III)] minerals such as magnetite and green rust have received a
significant amount of attention over recent decades, especially in the environmental …

Iron (Fe) minerals play an important role in stabilizing soil organic carbon (SOC). Fe-
mediated SOC protection is mainly achieved through adsorption, co-precipitation, or …

Microbial activity is a fundamental component of oceanic nutrient cycles. Photosynthetic
microbes, collectively termed phytoplankton, are responsible for the vast majority of primary …

Reduction–oxidation (redox) reactions occur during burial because sediments contain
reactive mixtures of oxidised and reduced components. Diagenetic chemical reactions …

Significance: Oxidative stress is thought to account for aberrant redox homeostasis and
contribute to aging and disease. However, more often than not, administration of …

Oceanic anoxia---including euxinic settings defined by the presence of water column
hydrogen sulfide (H~ 2~ S)---is minor in the ocean today. Such conditions, however, were …

The cycling of carbon on Earth exerts a fundamental influence upon the greenhouse gas
content of the atmosphere, and hence global climate over millennia. Until recently, ice …

The chemical versatility of sulfur and its abundance in the prebiotic Earth as reduced sulfide
(H2S) implicate this molecule in the origin of life 3.8 billion years ago and also as a major …

Freshwater discharge from glaciers is increasing across the Arctic in response to
anthropogenic climate change, which raises questions about the potential downstream …

The coprecipitation of organic carbon with iron minerals is important for its preservation in
soils and sediments, but the mechanisms for carbon-iron interactions and thus the controls …