Redox-sensitive trace metals have been used extensively as geochemical proxies to infer
the redox-status of marine sediments at the time of their deposition, and by extension, the …

Superoxide, O2•−, is formed in all living organisms that come in contact with air, and,
depending upon its biological context, it may act as a signaling agent, a toxic species, or a …

The rise of atmospheric oxygen fundamentally changed the chemistry of surficial
environments and the nature of Earth's habitability. Early atmospheric oxygenation occurred …

Nitrogen is an essential nutrient for all life on Earth and it acts as a major control on
biological productivity in the modern ocean. Accurate reconstructions of the evolution of life …

We describe how environmental context can help determine whether oxygen (O2) detected
in extrasolar planetary observations is more likely to have a biological source. Here we …

The Siberian Traps large igneous province (STLIP) is commonly invoked as the primary
driver of global environmental changes that triggered the end-Permian mass extinction …

Iron formations (IF) represent an iron-rich rock type that typifies many Archaean and
Proterozoic supracrustal successions and are chemical archives of Precambrian seawater …

The ocean‐atmosphere system is typically envisioned to have gone through a unidirectional
oxygenation with significant oxygen increases in the earliest (ca. 635 Ma), middle (ca. 580 …

The redox-sensitive transition element molybdenum is present in the Earth's crust at trace
concentrations but is abundant in seawater, marine sediments, and ancient sedimentary …

The reconstruction of oceanic paleoredox conditions on Earth is essential for investigating
links between biospheric oxygenation and major periods of biological innovation and …