Microorganisms living in anoxic marine sediments consume more than 80% of the methane
produced in the world's oceans. In addition to single-species aggregates, consortia of …

Anaerobic methanotrophs help regulate Earth’s climate and may have been an important
part of the microbial ecosystem on the early Earth. The anaerobic oxidation of methane (AOM) …

Diverse microbial communities and numerous energy-yielding activities occur in deeply buried
sediments of the eastern Pacific Ocean. Distributions of metabolic activities often deviate …

Studies of deeply buried, sedimentary microbial communities and associated biogeochemical
processes during Ocean Drilling Program Leg 201 showed elevated prokaryotic cell …

No microorganism capable of anaerobic growth on methane as the sole carbon source has
yet been cultivated. Consequently, information about these microbes has been inferred from …

All terrestrial organisms depend on nucleic acids (RNA and DNA), which use pyrimidine and
purine nucleobases to encode genetic information. Carbon-rich meteorites may have been …

The subseafloor marine biosphere may be one of the largest reservoirs of microbial biomass
on Earth and has recently been the subject of debate in terms of the composition of its …

Variable levels of methane in the martian atmosphere have eluded explanation partly because
the measurements are not repeatable in time or location. We report in situ measurements …

A phylogenetic ‘tree of life’ has been constructed based on the observed presence and
absence of families of protein-encoding genes observed in 11 complete genomes of free-living …

The sample analysis at Mars instrument evolved gas analyzer (SAM‐EGA) has detected
evolved water, H 2 , SO 2 , H 2 S, NO, CO 2 , CO, O 2 , and HCl from two eolian sediments and …