Table of Contents
Microorganisms, Volume 6, Issue 2 (June 2018)
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Cover Story (view full-size image) Mars is currently considered relatively inhospitable due to its freezing temperatures, among other [...] Read more. Mars is currently considered relatively inhospitable due to its freezing temperatures, among other factors. Should life currently exist on the planet, it would likely consist of subsurface microorganisms capable of surviving and/or metabolizing at cold temperatures. Methanogens are found in a wide variety of environments on Earth, ranging from seafloor hydrothermal vents to arctic permafrost. Two non-psychrophilic species of methanogens, Methanobacterium formicicum and Methanothermobacter wolfeii, have been shown capable of active growth following long-term exposure (~4 years) to freezing temperatures. View the paper here.