The terrestrial subsurface hosts microbial communities that, collectively, are predicted to
comprise as many microbial cells as global surface soils. Although initially thought to be …

Microbes thrive in diverse porous environments—from soil and riverbeds to human lungs
and cancer tissues—spanning multiple scales and conditions. Short-to long-term …

Microbial activity is a major contributor to the biogeochemical cycles that make up the life
support system of planet Earth. A 613 m deep geomicrobiological perforation and a …

The deep bedrock surroundings are an analog for extraterrestrial habitats for life. In this
study, we investigated microbial life within anoxic ultradeep boreholes in Precambrian …

Rising atmospheric carbon concentrations affect global health, the economy, and overall
quality of life. We are fast approaching climate tipping points that must be addressed, not …

Deep aquifers (up to 2km deep) contain massive volumes of water harboring large and
diverse microbial communities at high pressure. Aquifers are home to microbial ecosystems …

Phosphorus plays a crucial role in controlling biological productivity, but geological
estimates of phosphate concentrations in the Precambrian ocean, during life's origin and …

To be effective, microbiological studies of deep aquifers must be free from surface microbial
contaminants and from infrastructures allowing access to formation water (wellheads, well …

The discovery that most of the prokaryotic diversity and biomass on Earth resides in the
deep subsurface, calls for an improved definition of habitability, which should consider the …

Microorganisms that can withstand high pressure within an environment are termed
piezophiles. These organisms are considered extremophiles and inhabit the deep marine or …