origin an devolution of life
Posted inBiochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Extremeophiles and Extreme Environments, Habitable Zones, Mars, Microbiology & Virology, Origin & Evolution of Life, Status Report

Siderite and Vivianite as Energy Sources for the Extreme Acidophilic Bacterium Acidithiobacillus Ferrooxidans in the Context of Mars Habitability

by Keith Cowing

Past and present habitability of Mars have been intensely studied in the context of the search for signals of life. Despite the harsh conditions observed today on the planet, some […]

Posted inAtmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biophysics, Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Origin & Evolution of Life, Status Report

Early-branching Cyanobacteria Up-regulate Superoxide Dismutase Activity Under A Simulated Early Earth Anoxic Atmosphere

by Keith Cowing

The evolution of oxygenic photosynthesis during the Archean (4-2.5 Ga), required the presence of complementary reducing pathways to maintain the cellular redox balance.

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