The deep subsurface is an enormous repository of microbial life. However, the metabolic
capabilities of these microorganisms and the degree to which they are dependent on surface …

Continental subsurface environments can present significant energetic challenges to the
resident microorganisms. While these environments are geologically diverse, potentially …

Deep subsurface biofilms are estimated to host the majority of prokaryotic life on Earth, yet
fundamental aspects of their ecology remain unknown. An inherent difficulty in studying …

The cyanobacterial genus Trichodesmium is biogeochemically significant because of its dual
role in nitrogen and carbon fixation in the oligotrophic ocean. Trichodesmium species form …

A facultatively anaerobic bacterium, designated strain 1MBB1 T , was isolated from basaltic
breccia collected from 341 m below the seafloor by seafloor drilling of Rigil Guyot during …

Iron-bearing minerals are key components of the Earth’s crust and potentially critical energy
sources for subsurface microbial life. The Deep Mine Microbial Observatory (DeMMO) is …

Microbes can be found in abundance many kilometers underground. While microbial
metabolic capabilities have been examined across different geochemical settings, it remains …

We have developed a method for better estimating dates of important evolutionary events
like the origin of oxygen producing bacteria, commonly known as Cyanobacteria or blue-green …

The Late Heavy Bombardment (LHB) and other impact scenarios are often invoked as
habitability constraints on the Early Earth. These hypotheses either describe an" impact frustration…

The extent of oxygenated environments on the early Earth was much lower than today, and
cyanobacteria were critical players in Earth's shift from widespread anoxia to oxygenated …