Special Session “Microbially mediated processes governing the redox cycling of metals” at the 2007 Goldschmidt Conference, Cologne (Germany) Session Organizers: Colleen Hansel, School of Engineering and Applied Sciences, Harvard University […]
Biosignatures & Paleobiology
Posted inAstrogeology, Biosignatures & Paleobiology, Icy Worlds
NAI Director's Seminar "New and Emerging Perspectives on Late Precambrian 'Snowball Earth' Glaciation"
Speaker: Tim Raub (Yale University), Date/Time: Monday, February 26, 2007 11AM PST Background: Using atmospheric chemical models of a Snowball Earth, scientists from NAI’s Alumni Virtual Planetary Laboratory Team showed […]
Posted inAstrobiology (general), Biosignatures & Paleobiology
Snowball Earth and the Origin of Photosynthesis
Using atmospheric chemical models of a Snowball Earth, scientists from NAI’s Alumni Virtual Planetary Laboratory Team show that, during long and severe glacial intervals, a weak hydrological cycle coupled with […]
Posted inBiosignatures & Paleobiology, Origin & Evolution of Life
Mineral Surfaces and Life
Robert Hazen, from NAI’s Carnegie Institution of Washington Team, published his 2005 Presidential Address to the Mineralogical Society of America in this month’s American Mineralogist. The address reviews the role […]
Posted inBiosignatures & Paleobiology, Origin & Evolution of Life
Oxygen and Life in the Precambrian
The December 2006 issue of Geobiology is a collection of papers focusing on the history of Earth’s biogeochemistry, from the earliest sedimentary rocks in Greenland to the late Proterozoic. The […]
Posted inAstrobiology (general), Biosignatures & Paleobiology, Origin & Evolution of Life
NAI Researchers to Recreate Conditions of the Early Earth
NAI has approved funding for the development of a new, state-of-the-art facility capable of recreating past atmospheric and oceanic conditions, to be called VAL, the Variable Atmospheres Laboratory. Capable of […]
Posted inAstrobiology (general), Astrogeology, Biosignatures & Paleobiology, Origin & Evolution of Life
Conditions for the Emergence of Life on the Early Earth: Special Issue Special Issue
Philosophical Transactions of the Royal Society (B). Organised and edited by Charles Cockell, Sydney Leach and Ian Smith Published August 2006 Living entities exhibit the three fundamental characteristics of metabolism, […]
Posted inAstrobiology (general), Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Origin & Evolution of Life
NAI Director's Seminar 11/27: Formation of Habitable Planetary Systems: Are We Normal?
Speakers: Sean Raymond (University of Colorado) and Avi Mandell (Goddard Space Flight Center) Date/Time: Monday, November 27, 2006 11AM PST Abstract: For a planet to be potentially habitable over long […]
Posted inAnalog Studies, Arctic / Antarctic / Alpine, Astrobiology (general), Away Teams & Field Reports, Biosignatures & Paleobiology, Dale Andersen's Field Reports, Extremeophiles and Extreme Environments, Icy Worlds, Mars, Press Release, SETI & Technosignatures
Green Ice, Ravens, Ice Caves And The Movie “Contact”
Towards the end of our summer expedition while flying back to Eureka from our camp on Axel Heiberg, I spotted a lake with what appeared to be green ice on […]
Posted inBiosignatures & Paleobiology, Fossils & Paleontology, Origin & Evolution of Life, Press Release
UCLA Scientists Strengthen Case For Life More Than 3.8 Billion Years Ago
Ten years ago, an international team of scientists reported evidence, in a controversial cover story in the journal Nature, that life on Earth began more than 3.8 billion years ago–400 […]