The majority of life on Earth—notably, microbial life—occurs in places that do not receive
sunlight, with the habitats of the oceans being the largest of these reservoirs. Sunlight …

Soil is composed of a mosaic of different rocks and minerals, usually considered as an inert
substrata for microbial colonization. However, recent findings suggest that minerals, in soils …

Our understanding of Earth's rock-hosted subsurface biosphere has advanced over the past
two decades through the collection and analysis of fluids and rocks from aquifers within the …

The rock-hosted subseafloor crustal aquifer harbors a reservoir of microbial life that may
influence global marine biogeochemical cycles. Here we utilized metagenomic libraries of …

Volcanic eruptions generate initially sterile materials where biological processes are absent,
allowing for the fresh colonization by new organisms. This review summarizes the …

Since biofilms are an important issue in the fields of medicine and health, several recent
microbiological studies have focused on their formation and their contribution to toxic …

The gabbroic layer comprises the majority of ocean crust. Opportunities to sample this
expansive crustal environment are rare because of the technological demands of deep …

The lithified lower oceanic crust is one of Earth's last biological frontiers as it is difficult to
access. It is challenging for microbiota that live in marine subsurface sediments or igneous …

Soil and climatic conditions as well as land cover and land management have been shown
to strongly impact the structure and diversity of the soil bacterial communities. Here, we …

Oceanic crust comprises the largest hydrogeologic reservoir on Earth, containing fluids in
thermodynamic disequilibrium with the basaltic crust. Little is known about microbial …