The record of Earth’s sulfur cycle preserved in sedimentary rocks is commonly used to track the evolution of microbial sulfur metabolisms and levels of atmospheric oxygen throughout geologic history. Sulfur […]
Biogeochemical Cycles & Geobiology
Posted inAstrobiology (general), Biogeochemical Cycles & Geobiology, Conferences and Meetings
Paleobiology During the Genomics Era – An Astrobiology All-access Event
May 12-13, 2011 A two-day workshop using NAI remote communications tools will be held on May 12th and 13th, 2011. Real-time participation requires only an internet connection and is available […]
Posted inAstrobiology (general), Biogeochemical Cycles & Geobiology, Mars, Missions & Hardware
Call for Symposium papers: Chemistry as a Tool for Space Exploration and Discovery at Mars
August 28-September 1, 2011 Denver, ColoradoAt the Fall 2011 American Chemical Society National Meeting Mars is the most accessible location outside of the Earth to investigate for evidence of past […]
Posted inAstrobiology (general), Biogeochemical Cycles & Geobiology, Extremeophiles and Extreme Environments
New Online Guidebook: Secrets of the Springs: Astrobiology in Yellowstone National Park
A new online guidebook helps people understand how astrobiology research ties to Yellowstone National Park. The guidebook, entitled “Secrets of the Springs: Astrobiology in Yellowstone National Park,” features an outline […]
Posted inBiogeochemical Cycles & Geobiology, Conferences and Meetings
Geobiology in Space Exploration Workshop – Second Announcement
Universite Cadi Ayyad, Ibn Battuta Centre, Marrakech, Morocco Joint ESA/NASA Workshop and Field TripFebruary 7-9, 2011 ABSTRACT DEADLINE JANUARY 7th Conveners: Charles Cockell (Open University, UK), Oliver Angerer (ESA), Mary […]
Posted inAstrobiology (general), Biogeochemical Cycles & Geobiology, Extremeophiles and Extreme Environments
Weird Arsenic-Eating Microbes Discovered? Yes. Finding E.T.? No.
NASA-Funded Astrobiology Research Discovers Earth Life Built With Arsenic, NASA “NASA-funded astrobiology research has changed the fundamental knowledge about what comprises all known life on Earth. Researchers conducting tests in […]
Posted inAstrobiology (general), Biogeochemical Cycles & Geobiology, Extremeophiles and Extreme Environments
Arsenic-Based Life Found on Earth
Astrobiologists: Deadly arsenic breathes life into organisms, Arizona State University “Evidence that the toxic element arsenic can replace the essential nutrient phosphorus in biomolecules of a naturally occurring bacterium expands […]
Posted inAstrobiology (general), Biogeochemical Cycles & Geobiology, Origin & Evolution of Life
"Life As We Know It", Redefined
Keith’s note: Multiple, reliable sources within the Astrobiology community tell me that NASA’s Astrobiology announcement tomorrow concerns Arsenic-based biochemistry and the implications for the origin of life on Earth, how […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Habitable Zones, Press Release, Water/Hycean Worlds & Oceanography
Plants Kick-start Evolutionary Drama Of Earth’s Oxygenation
An international team of scientists, exploiting pioneering techniques at Arizona State University, has taken a significant step toward unlocking the secrets of oxygenation of the Earth’s oceans and atmosphere.
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Press Release
Did Phosphorous Trigger Blue Skies?
The evolution of complex life forms may have gotten a jump start billions of years ago, when geologic events operating over millions of years caused large quantities of phosphorus to […]