Abstract The Proterozoic Eon spans Earth's middle age during which many important
transitions occurred. These transitions include the oxygenation of the atmosphere …

Abstract “Plastisphere”, microbial communities colonizing plastic debris, has sparked global
concern for marine ecosystems. Microbiome inhabiting this novel human-made niche has …

Anoxic and iron-rich (ferruginous) conditions prevailed in the ocean under the low-oxygen
atmosphere that occurred through most of the Archean Eon. While euxinic conditions (ie …

The isotopic composition of nitrous oxide (N2O) provides useful information for evaluating
N2O sources and budgets. Due to the co‐occurrence of multiple N2O transformation …

Abstract Nitrous oxide (N 2 O)—a product of microbial nitrogen metabolism—is a compelling
exoplanet biosignature gas with distinctive spectral features in the near-and mid-infrared …

A key challenge in origins‐of‐life studies is estimating the abundances of species relevant to
the chemical pathways proposed to have contributed to the emergence of life on early Earth …

The production and consumption of the potent greenhouse gases, nitrous oxide and
methane, are largely controlled by microorganisms that have long been assigned to defined …

Microbial denitrification converts fixed nitrogen species into gases in extant oceans.
However, it is unclear how such transformations occurred within the early nitrogen cycle of …

In the last three decades, knowledge of planetary systems other than our own has increased
rapidly with the discovery of over 5,000 exoplanets (Christiansen 2022). These worlds vary …

Nitrogen is an essential element to life and exerts a strong control on global biological
productivity. The rise and spread of nitrogen‐utilizing microbial metabolisms profoundly …