Ancient rocks are shedding new light on the timeline for life’s emergence on Earth. The rocks from the Nuvvuagittuq Supracrustal Belt in Quebec, Canada, are believed to be some of […]
Biogeochemical Cycles & Geobiology
Posted inBiogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Origin & Evolution of Life
Cycling Nitrogen in Ancient Oceans
In recent years, scientists have found evidence that a ‘near complete’ biological nitrogen cycle existed in the oceans during the late Archean to early Proterozoic (from 2.5 to 2 billion […]
Posted inBiogeochemical Cycles & Geobiology, Education and Outreach
Environmental Geobiology Faculty Position: Kansas State University
The Department of Geology at Kansas State University invites applications for a full-time tenure-track position in Environmental Geobiology, at the rank of Assistant Professor. Compensation is based on the nine-month […]
Posted inBiogeochemical Cycles & Geobiology, Biosignatures & Paleobiology
Biomineralization: Linking Biology and Geochemistry
Fossils are essential to our understanding of the history and origins of complex life. New work from NAI’s MIT and Penn State teams describes exquisitely preserved microfossils from mid-Neoproterozoic (811-717 […]
Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Origin & Evolution of Life
New Evidence Challenges Oldest Signs of Life
Ancient rocks are shedding new light on the timeline for life’s emergence on Earth. The rocks from the Nuvvuagittuq Supracrustal Belt in Quebec, Canada, are believed to be some of […]
Posted inBiogeochemical Cycles & Geobiology, Water/Hycean Worlds & Oceanography
Cycling Nitrogen in Ancient Oceans
In recent years, scientists have found evidence that a ‘near complete’ biological nitrogen cycle existed in the oceans during the late Archean to early Proterozoic (from 2.5 to 2 billion […]
Posted inBiogeochemical Cycles & Geobiology
A New Look at the Sulfur Cycle
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 […]
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 […]