This review of material relevant to the Conference on Biosignature Preservation and
Detection in Mars Analog Environments summarizes the meeting materials and discussions …

Nitrogenase, which catalyzes the ATP-dependent reduction of dinitrogen (N2) to ammonia
(NH3), accounts for roughly half of the bioavailable nitrogen supporting extant life. The …

The Rehai and Ruidian geothermal fields, located in Tengchong County, Yunnan Province,
China, host a variety of geochemically distinct hot springs. In this study, we report a …

The Tibetan Plateau in Northwest China hosts a number of hot springs that represent a
biodiversity hotspot for thermophiles, yet their diversity and relationship to environmental …

Abstract Great Boiling Spring is a large, circumneutral, geothermal spring in the US Great
Basin. Twelve samples were collected from water and four different sediment sites on four …

The Yellowstone caldera contains the most numerous and diverse geothermal systems on
Earth, yielding an extensive array of unique high-temperature environments that host a …

Geologic, chemical and isotopic evidence indicate that Earth has experienced numerous
intervals of widespread glaciation throughout its history, with roughly 11% of present day …

Combining analytical data from hot spring samples with thermodynamic calculations permits
a quantitative assessment of the availability and ranking of various potential sources of …

The identification and characterization of genes involved in the microbial oxidation of
arsenite will contribute to our understanding of factors controlling As cycling in natural …

Many thermophiles catalyse free energy‐yielding redox reactions involving nitrogenous
compounds; however, little is known about these processes in natural thermal environments …