Recent & Upcoming Talks

Mineral-hosted biofilm communities in a deep subsurface Mars-analog system: The Deep Mine Microbial Observatory, SD, USA

**Introduction:** The potential for liquid water in the subsurface of Mars supports the possibility of an active deep subsurface biosphere. Given that the majority of prokaryotic life on Earth may exist in deep subsurface biofilms (Flemming and …

Combining Geochemistry and Microbial Ecology to Understand Habitability and Processes in the Subsurface Terrestrial Biosphere

**Introduction:** If there is or ever was life on an extraterrestrial planetary body, evidence of that life would likely be found below the surface, protected from harsh exposed conditions. The deep terrestrial subsurface is a key analog for …

Life in Land: The Deep Continental Biosphere and Its Implications for Planetary Habitability

The rocks beneath our feet are home to an astonishing array of microbial life. Extending from shallow aquifers to kilometers into the crust, the deep subsurface biosphere (DSB) contains as much organic carbon in biomass as the ocean, rivers, and …

Cultivating the Deep Subsurface Microbiome

**Introduction:** Understanding the diverse physiology, ecology, and metabolic characteristics of microbial life in terrestrial subsurface environments is a critical step in the search for extraterrestrial examples. The subsurface offers protection …

Establishment of the Deep Mine Microbial Observatory (DeMMO).

**Motivation:** Earth’s deep subsurface hosts a diverse microbiome rich in potential for the study of conditions analogous to exoplanetary interiors and corresponding microbial intraterrestrials. Access to the subsurface is often transient, however, …