Archives

Conferences and Meetings: April 2011


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 to interested scientists from around the world. More details, including connection and registration information, is available at the meeting website given below.

Synopsis

Over the past 4 billion years, the Earth and its biosphere have undergone a series of linked transitions in redox state, biochemical plasticity, and biological diversity. In order to study this evolution, diverse scientific disciplines, including inorganic and organic geochemistry, microbiology, and genomics, we must overcome traditional disciplinary barriers and interact. In recent years, numerous technological advances have resulted in rapid advances in each of these fields. One of the most striking has been the development of cheaper and more efficient sequencing technologies, along with attendant advances in genetics and the computational techniques to leverage the resulting data. To facilitate interactions between paleobiologists and scientists using the latest techniques in molecular biology and genomics, a symposium will be held at the J. Craig Venter Institute in San Diego, California. The primary objective is the exchange of knowledge and the development of a dialog that might yield cutting-edge ideas for future work.

Confirmed Speakers

Tim Lyons, University of California, Riverside
Gordon Love, University of California, Riverside
James Lake, University of California, Los Angeles
Gustavo Caetano-Anolles, University of Illinois, Urbana-Champaign
Lawrence David, Harvard University
Trinity Hamilton, Montana State University
Ziming Zhao, Georgia Tech
Clyde Hutchison, J. Craig Venter Institute
Kate Freeman, Pennsylvania State University
Dave Doughty, California Institute of Technology
Jason Raymond, Arizona State University
Andrew Allen, J. Craig Venter Institute
Jack Bailey, University of Minnesota
Frank Stewart, Georgia Tech

The workshop will consist of talks and discussion. Each presentation will allow ample time for questions and answers afterwards. We encourage researchers to attend in real time to engage in what we expect will be a lively exchange of ideas during the workshop.

Workshop Organizing Committee

Chris Dupont, J. Craig Venter Institute
Ariel Anbar, Arizona State University
John Peters, Montana State University

For more information and participation instructions, visit: http://astrobiology.nasa.gov/nai/geobiology2011

4/25 NAI Director's Seminar

Jay Kaufman 'Irreversible Oxidation of the Exosphere and Acceleration of the Biosphere Across the Archean-paleoproterozoic Transition'

Join us for the next NAI Director's Seminar!

Date/Time: Monday, April 25, 2011 11:00AM Pacific

Presenter: Jay Kaufman (University of Maryland)

Abstract:

Around two and half billion years ago a harmonic convergence of tectonic, volcanic, oceanographic, atmospheric, and biological events resulted in the irreversible oxidation of Earth's thin crust and surface environments. Lithological and geochemical evidence of this terrestrial metamorphosis - which stimulated global environmental, climatic, and biological innovations - is preserved in sedimentary archives sampled in outcrop and deep time drill cores from ancient continental fragments scattered about the globe. Recent time-series investigations of geochemical change in the shallow Archean and Paleoproterozoic oceans predict stepwise growth in atmospheric oxygen and ozone, the planetary sunscreen, and in seawater nitrate and sulfate, which sustain key microbial ecosystems. In this evolutionary seminar we will explore the possible sources and sinks of oxygen on the early Earth and the effect of its geologically sudden rise (coined by Dick Holland as the Great Oxidation Event or GOE) on weathering, climate, and the onset of a modern-style carbon cycle. Participation Instructions:

TO JOIN USING A VIDEOCONFERENCING SYSTEM:

Please RSVP to Marco Boldt (Marco.Boldt@nasa.gov) if you will be joining by Polycom. To view the slides, connect to http://connect.arc.nasa.gov/nai_directors_seminar/

TO JOIN USING A WEB BROWSER:

The slides and audio/video for this meeting will be presented using Adobe Connect. To join the meeting, connect to: http://connect.arc.nasa.gov/nai_directors_seminar/