The Deep Life Directorate of the Deep Carbon Observatory (sponsored by the Alfred P. Sloan Foundation) will investigate the microbiology of the rock-hosted subsurface biosphere. Microbial communities contained within rock-hosted subsurface environments may be important conduits for the exchange of carbon and energy between the deep Earth and the biosphere- yet surprisingly little is known of their extent, their identities, or their activities. The research specifically addresses microbial carbon transformations in environments influenced by high hydrogen fluxes and abiogenic production of organic molecules. The research team consists of 17 scientists from 7 countries and contains both field and laboratory components. The Directorate seeks candidates for multiple Postdoctoral positions to work within this cooperative framework.

Continue reading "Postdoctoral Positions for the Deep Life Initiative of the Deep Carbon Observatory" »

Posted by Keith Cowing at 12:55 PM | Permalink | Comments (0)

We need you in Houston! Sign up today to participate in FameLab Astrobiology at the Lunar and Planetary Institute on January 13th. FameLab is a science communication competition that focuses on building your skills with workshops on good communication practices. The workshop in Houston will be led by the Co-Directors of the National Association for Interpretation. Competitors will present a three-minute piece on their research or an astrobiology-related topic of their choosing. Those topping the competition in Houston will go on to the final at AbSciCon in April...the winner there will go on to the FameLab International final in the UK in June. Lodging and $500 in travel support are available--sign up today at http://astrobiologyfamelab.arc.nasa.gov/. Contact daniella.m.scalice@nasa.gov with any questions.

Posted by Keith Cowing at 12:54 PM | Permalink | Comments (0)

Arthropod expansion in morphological disparity following the Cambrian Explosion of Bilateria, as demonstrated by the Burgess Shale trilobite Olenoides and stem-Chelicerate Sidneyia. Image Credit: Smithsonian Institution, courtesy of Douglas Erwin.

A team of researchers including members of NAI's MIT team have married fossil records with molecular clock studies to reveal a new interpretation of the Cambrian explosion. Collectively these data allow an understanding of the environmental potential, genetic and developmental possibility, and ecological opportunity that existed before and during the Cambrian. The study compares the times of origin of major animal groups (from the molecular clock) with the times of their first appearance in the fossil record. The team shows that the major animal groups first diverged during the Cryogenian, roughly 300 million years prior to their appearance in the fossil record, and acquired the key components of their developmental toolkits early in their history. After a long lag, the groups' major ecological successes are reflected in the records of the Ediacaran and Cambrian. Their paper appears in the current issue of Science.

Posted by Keith Cowing at 12:53 PM | Permalink | Comments (0)

Scientists from NAI's New York Center for Astrobiology at Rensselaer Polytechnic Institute have used the oldest minerals on Earth to reconstruct the atmospheric conditions present on Earth very soon after its birth. The findings, which appear in the December 1, 2011 issue of Nature, are the first direct evidence of what the ancient atmosphere of the planet was like soon after its formation and directly challenge years of research on the type of atmosphere out of which life arose on the planet.

The scientists show that the atmosphere of Earth just 500 million years after its creation was not a methane-filled wasteland as previously proposed, but instead was much closer to the conditions of our current atmosphere. The findings, in a paper titled "The oxidation state of Hadean magmas and implications for early Earth's atmosphere," have implications for our understanding of how and when life began on this planet and could begin elsewhere in the universe.

For more information: http://astrobiology.nasa.gov/articles/earth-s-early-atmosphere-an-update/

Posted by Keith Cowing at 12:52 PM | Permalink | Comments (0)

The Canadian Astrobiology Training Program (CATP) is the first Canadian cross-disciplinary, multi-institutional undergraduate, graduate and postdoctoral training program in Astrobiology and is a NSERC-funded Collaborative Research and Training Experience Program (CREATE) (2009-2015) located at McGill University, McMaster University, University of Western Ontario, University of Toronto, and the University of Winnipeg. CATP by its very nature will be accomplished through collaborative and integrative research approaches containing elements of geology, chemistry, physics, astronomy, microbiology, and robotics. CATP trainees (~70 graduate & undergraduate students, PDFs over the next 5 years) will be exposed to innovative research and training approaches, combining fieldwork at unique Canadian analogue sites, including those in the high Arctic, with laboratory work at cutting edge analytical facilities at participating university, government, and industry partners.

Continue reading "Canadian Astrobiology Training Program MSc, PhD, Post Doctoral Fellow Positions Available" »

Posted by Keith Cowing at 2:57 PM | Permalink | Comments (0)

The Conference on Life Detection in Extraterrestrial Samples will be held February 13-15, 2012, at the Scripps Institution of Oceanography, San Diego, California.

Purpose and Scope

The return of samples from Mars was the highest-priority flagship in the U.S. Planetary Decadal Survey. It is also a key element in the European Space Agency's (ESA) Mars Robotic Exploration Preparatory Program to prepare Europe's contribution to the international exploration of Mars. Part of planning for a Mars sample return mission includes planning for what will happen to the samples after they have returned to Earth. One of the major scientific questions that will be asked in the analysis of returned martian samples is whether they contain indications of past or present martian life. In addition, international guidelines and agency policies dictate that Mars samples must be subjected to a program of life detection and biohazard analysis before they can be released from strict containment, to protect the environment of the Earth. A better understanding of current and possible investigation strategies and capabilities, including controls and measurements related to life detection in returned martian samples, is important to address both these concerns.

An understanding of planned or possible life detection strategies and measurements has major implications for several decisions related to requirements for the 2018 sampling rover, including strategies and requirements for avoiding contamination of the samples, and sample size needed to carry out the returned sample measurements.

Life detection strategies and capabilities are relevant to a range of scientific activities beyond Mars sample return, including origin of life investigations of both terrestrial and planetary materials. The search for fossils and remnants of early life on Earth benefits greatly from a variety of analytical techniques, and can inform efforts to detect life in planetary materials. Strategies and technologies for life detection can effectively be applied to meteorite studies, addressing questions regarding the organic constituents present in the early solar system as well as possibly shedding light on reports of possible life in meteorites that remain highly controversial.

For more information: http://www.lpi.usra.edu/meetings/lifedetection2012/

Posted by Keith Cowing at 2:05 PM | Permalink | Comments (0)

Harvard University is launching a research project to study living systems within its Harvard Origins of Life Initiative and the Department of Earth and Planetary Sciences. The work will be done under the direction of Dr. Juan Perez-Mercader, PI for this project, and brings together approaches for modeling life by using a combined transdisciplinary approach involving Chemistry, Physics, Biology, Computer Science and Engineering. We invite applications for a number of Research Associate and Postdoctoral positions in the areas of Origin of Life, Information Theory, Synthetic/Artificial Life, Physics and Chemistry of Out-of-Equilibrium Phenomena and Chemical Engineering.

Continue reading "Research Associate and Postdoctoral Positions Available at the Harvard Origins of Life Initiative" »

Posted by Keith Cowing at 1:59 PM | Permalink | Comments (0)

Anyone who has taken high school biology has likely come into contact with a ciliate. The much-studied paramecium is one of 7,000 species of ciliates, a vast group of microorganisms that share a common morphology: single-celled blobs covered in tiny hairs, or cilia. These cilia -- Greek for "eyelash" -- are used to propel a microbe through water and catch prey.

Today these hairy microbes are ubiquitous in marine environments. However, it's unclear how long ciliates have inhabited Earth: After they die, members of most species simply disintegrate in their watery environs, leaving behind no fossilized remains.

Now, geologists at NAI's MIT Team and Harvard University have unearthed rare, flask-shaped microfossils dating back 635 to 715 million years, representing the oldest known ciliates in the fossil record. The remains are more than 100 million years older than any previously identified ciliate fossils, and the researchers say the discovery suggests early life on Earth may have been more complex than previously thought. What's more, they say such prehistoric microbes may have helped trigger multicellular life, and the evolution of the first animals.

"These massive changes in biology and chemistry during this time led to the evolution of animals," says Tanja Bosak, the Cecil and Ida Green Career Development Assistant Professor in MIT's Department of Earth, Atmospheric and Planetary Sciences. "We don't know how fast these changes occurred, and now we are finding evidence of an increase in complexity."

Bosak and her colleagues have published the study in the October 21, 2011 issue of the journal Geology.

For more information: http://astrobiology.nasa.gov/articles/early-life-more-complex-than-previously-thought/

Posted by Keith Cowing at 1:51 PM | Permalink | Comments (0)

This year's joint Canadian Meteorological and Oceanographic Society (CMOS) / American Meteorological Society (AMS) Congress to be held in Montreal from May 29 to June 1, 2012 will feature a session entitled Planetary and Exo-Planetary Atmospheres, Surface Interactions and Astrobiology. This new session, held for the first time this year, seeks to bring together research in atmospheres beyond our own and the processes which affect their composition and dynamics from researchers across Canada and the World. For more information, please consult the links below or contact John Moores at john.e.moores@gmail.com .

Abstracts may be submitted no later than February 17, 2012 at the website of the Montreal Congress:

http://www.cmos.ca/congress2012/en/abstractsubmission/index.shtml

A more complete description of the session can be found here:

http://people.sca.uqam.ca/~gauthier/CMOS2012/ProgramCMOSMontreal2012_ web.htm#_Planetary_and_Exo-Planetary

Posted by Keith Cowing at 1:17 PM | Permalink | Comments (0)

To: Astrophysics and Exoplanetary Science Community
From: Astrophysics Division of NASA's Science Mission Directorate, NASA Headquarters
Date: January 2012
Subject: Call for Nominations to the Executive Committee of the Exoplanet Exploration Program Analysis Group (ExoPAG)

Dear Colleagues:

The Astrophysics Division of NASA's Science Mission Directorate is pleased to issue this open call for nominations to serve on the Executive Committee of NASA's Exoplanet Exploration Program Analysis Group, or ExoPAG. In the coming months, NASA anticipates making four new appointments to the ExoPAG Executive Committee, to replace four current members who will be rotating off the committee after the semi-annual ExoPAG meeting in January (ExoPAG 5; information at http://exep.jpl.nasa.gov/exopag/exopag5). Appointments will be for a period of 3 years.

Continue reading "Call for Nominations to the Executive Committee of the Exoplanet Exploration Program Analysis Group (ExoPAG)" »

Posted by Keith Cowing at 1:01 PM | Permalink | Comments (0)

Based on studies of rock cores, a team of geoscientists that include members of NAI's Penn State Team have determined that oxygen did not appear in Earth's atmosphere in a single event. Instead, atmospheric oxygen came about in a long series of starts and stops.

The research was conducted using samples collected in the summer of 2007 during the Fennoscandia Arctic Russia - Drilling Early Earth Project (FAR DEEP). Scientists drilled a series of shallow, two-inch diameter cores and overlapped them to create a record of the Proterozoic Eon--2,500 million to 542 million years ago.

"We've always thought that oxygen came into the atmosphere really quickly during an event," said Lee Kump, a geoscientist at Penn State University. "We are no longer looking for an event. Now we're looking for when and why oxygen became a stable part of the Earth's atmosphere."

The research was published in the December 1, 2011 issue of Science Express under lead author Lee Kump.

Posted by Keith Cowing at 12:50 PM | Permalink | Comments (0)

Study challenges existence of arsenic-based life, Nature

"A group of scientists, led by microbiologist Rosie Redfield at the University of British Columbia in Vancouver, Canada, have posted data on Redfield's blog that, she says, present a "clear refutation" of key findings from the paper. But after Redfield and others raised numerous concerns, many of which were published as technical comments in Science, Redfield put the results to the test, documenting her progress on her blog to advance the cause of open science ... Redfield and her collaborators hope to submit their work to Science by the end of the month. She says that if Science refuses to publish the work because it has been discussed on blogs, it will become an important test case for open science."

- Arsenic, Astrobiology, NASA, and the Media, earlier post
- NASA Researchers Start To Backtrack on Earlier Claims, earlier post
- Snarky NASA SMD Response to Snarky Public Astrobiology Discussion, earlier post
- Weird Arsenic-Eating Microbes Discovered? Yes. Finding E.T.? No, earlier post
- Arsenic-Based Life Found on Earth, earlier post
- NASA's Astrobiology News: Arsenic Biochemistry Anyone? (Update), earlier post

Posted by Keith Cowing at 3:38 PM | Permalink | Comments (0)

NASA is accepting applications from science and engineering post-docs, recent PhDs, and doctoral students for its 24th Annual Planetary Science Summer School, which will hold two separate sessions this summer (18-22 June and 16-20 July) at the Jet Propulsion Laboratory in Pasadena, Calif. During the program and pre-session webinars, student teams will carry out the equivalent of an early mission concept study, prepare a proposal authorization review presentation, present it to a review board, and receive feedback.

By the end of the session, students will have a clearer understanding of the life cycle of a space mission; relationships between mission design, cost, and schedule; and the tradeoffs necessary to stay within cost and schedule while preserving the quality of science. Applications are due March 28, 2012. Partial financial support is available for a limited number of individuals. Further information is available at: http://pscischool.jpl.nasa.gov

Posted by Keith Cowing at 3:00 PM | Permalink | Comments (0)

The international community is invited to participate in our academic activities of inspiration in STEM (science, technology, engineering and math), that take place in Colombia and the USA. These activities will be held on the following dates in 2012: March 26 to April 8, June 11 to June 24, June 25 to July 8, October 1 to October 14, November 26 to December 9. For more information on costs and how to apply in this link: http://www.spaceschoolcolombia.org or email alexandro.gonzalez@me.com

Posted by Keith Cowing at 1:18 PM | Permalink | Comments (0)

Harvard University is launching a research project to study living systems within its Harvard Origins of Life Initiative and the Department of Earth and Planetary Sciences. The work will be done under the direction of Dr. Juan Perez-Mercader, PI for this project, and brings together approaches for modeling life by using a combined transdisciplinary approach involving Chemistry, Physics, Biology, Computer Science and Engineering. We invite applications for a number of Research Associate and Postdoctoral positions in the areas of Origin of Life, Information Theory, Synthetic/Artificial Life, Physics and Chemistry of Out-of-Equilibrium Phenomena and Chemical Engineering.

It is anticipated that the Research Associate positions will be for at least 3 years with continuation contingent upon strong performance. Each of the Postdoctoral positions is awarded for one year with an option to renew for a second year dependent upon strong performance. All positions are available immediately.

Continue reading "Opportunity at the Harvard Origins of Life Initiative and the Department of Earth and Planetary Sciences" »

Posted by Keith Cowing at 1:11 PM | Permalink | Comments (0)

Life's origin and existence in the universe are among the most profound riddles ever facing science. ILASOL is an Israeli scientific society devoted to these issues. ILASOL's yearly meeting gathers physicists, biologists, chemists, mathematicians, philosophers and researchers of other disciplines present works related to life's origin and astrobiology. Presentations are peer-reviewed in order to guarantee high scientific level, while enabling a friendly forum for novel and unorthodox ideas to be aired and assessed.

The 25th meeting took place during December 2011, and had a rich program which can be found at our web site: http://www.ilasol.org.il. The astrobiology session focused on the search of exo-planets (planets around other stars), in particular on the recent results from the Kepler mission and their implication for finding extra-terrestrial life, as well as the recent finding of comets with earthly water isotope ratio. Scientists, students and laypersons are welcomed to become ILASOL members (no charge), submit works and become involved in all our activities.

Posted by Keith Cowing at 4:10 PM | Permalink | Comments (0)

The W.M. Keck Research Laboratory in Astrochemistry located at the University of Hawaii at Manoa is a state-of-the-art international user facility established with the support of the W.M. Keck Foundation and the University of Hawaii at Manoa. We invite collaborative proposals catalyzing multidisciplinary research in the fields of astrochemistry, planetary sciences, astrobiology, material sciences, and reaction dynamics. Inquiries and proposals shall be sent to Ralf I. Kaiser ralfk@hawaii.edu or to Brant M. Jones "brantmj@hawaii.edu":mailto:brantmj@hawaii.edu; novel research directions are supported and encouraged.

Please visit our web site http://www.chem.hawaii.edu/Bil301/KLA.html for further information.

Posted by Keith Cowing at 4:09 PM | Permalink | Comments (0)

The summer school "Water, Ice and the Origin of Life in the Universe", which will be held in Iceland from 2 to 15 July 2012, aims to give participants a thorough high-level introduction into the role of water in the evolution of life in the cosmos, starting from formation of water molecules in space and ending with the evolution of the first organisms. It will bring together students and researchers from a multitude of different science branches, making it a truly multidisciplinary event. The event will be organized by the Nordic Astrobiology Network together with the NASA Astrobiology Institute. Field studies on the colonization of lava fields and glaciers will complement the lectures. The program of the summer school includes:

* lectures by internationally leading scientists covering a broad range of subjects in astrobiology
* investigation of colonization of volcanic rocks and glaciers with in-situ life detection techniques
* excursions to geologically and biologically interesting sites (lava caves, new lava fields)
* 2 poster sessions for students and early career scientists
* participant-led discussions about hot topics

The event is intended for graduate students and early career scientists (up to 5 years after their first Ph. D. in a related field) in fields related to astrobiology. Undergraduate students can also apply, and will be accepted under exceptional circumstances. The event is open to applicants from all nationalities.

Detailed information about the summer school and the application procedure (deadline 31 January 2012) can be found at http://www.nordicastrobiology.net/Iceland2012 .

Successful applicants accepted by the Scientific Committee as participants will receive free lodging, meals and excursions, but will have to organize financial means for their travel to and from Iceland themselves. Course credit awards (ECTS points) for undergraduate and Ph. D. students will be applied for by the course organizers.

Posted by Keith Cowing at 2:56 PM | Permalink | Comments (0)

The John W. Kluge Center at the Library of Congress is accepting applications and nominations for the new Baruch S. Blumberg NASA/Library of Congress Chair in Astrobiology.

Applications and nominations must be postmarked by Monday, February 13, 2012. For guidelines and forms, visit www.loc.gov/loc/kluge/fellowships/NASA-astrobiology.html . Candidates should apply directly using the online form. Nominations should be submitted in writing to scholarly@loc.gov.

The astrobiology chair is a new distinguished senior research position in residence at the Library's Kluge Center for a period of up to 12 months. This is an appointment made by the Librarian of Congress on the recommendation of a selection committee, which considers both applications and nominations. For the Library's announcement of the chair, visit http://www.loc.gov/today/pr/2011/11-202.html .

Using the collections and services at the Library of Congress, the chair holder conducts research at the intersection between the science of astrobiology and its humanistic aspects, particularly its societal implications. The astrobiology scholar receives a stipend of $13,500 per month. The tenure is expected to begin in October 2012.

Continue reading "Call for Applications: New NASA/Library of Congress Chair in Astrobiology" »

Posted by Keith Cowing at 1:04 PM | Permalink | Comments (0)

The deadline for the 2012 MIRS Program is March 15, 2012.

The AB Program Minority Institution Research Support (MIRS) program, administered by the United Negro College Fund Special Programs Corporation, provides funded opportunities for researchers from minority institutions to initiate partnerships with researchers in the field of astrobiology. Past MIRS Scholars have worked with researchers at UCLA, NASA Ames, the University of Hawaii, JPL, the University of Wisconsin, NASA Goddard, and Portland State University.

For more information: http://www.uncfsp.org/cms/default.aspx?page=program.view&areaid=12&contentid=811&typeid=NAIMIRS53345

Posted by Keith Cowing at 12:49 PM | Permalink | Comments (0)

The NASA Astrobiology Institute is pleased to announce selections for research awards resulting from its 2011 Director's Discretionary Fund competition. The selections cover a wide range of research topics, from an examination of microbial succession on islands of floating pumice to defining the habitable zone's outer edge by combining climate evolution models with models of orbital and obliquity evolution.

Discretionary resources in the fiscal year 2012 NAI budget are extraordinarily limited. Since these are the funds from which we make 2011 DDF awards, we have been limited to a small fraction of the total award amounts of past years. Approximately $250K is allocated for the seven selected investigations described in the link below.

Selections were based on external reviews, with selection priority given to proposals that

* integrate the research of and realize synergies among the current NAI teams;

* expand the scope of NAI research (and the NAI community) in innovative ways, accepting some risk in return for high pay-off potential;

* respond in a timely way to new scientific results or programmatic opportunities;

* develop connections between astrobiology research and other NASA science programs, particularly NASA's Earth Science Program;

* directly support flight programs, particularly through instrument development;

* use funding particularly effectively, for example through leveraging or building on past investments; and/or

* support early career investigators

For more information and a list of selected research projects: http://astrobiology.nasa.gov/nai/funding/the-nai-directors-discretionary-fund/2011

Posted by Keith Cowing at 11:49 AM | Permalink | Comments (0)

A front page article and supplemental material were published by the American Geophysical Union in the Nov. 15, 2011 issue of EOS on "Ocean Deoxygenation, Past, Present, and Future." The article was the product of an NAI-sponsored workshop held at NASA's Ames Research Center in early 2010. The workshop brought together experts in modern and ancient ocean science to identify and develop synergies between studies of global climate change in the distant past and the present. The full workshop report is also available.

Posted by Keith Cowing at 4:01 PM | Permalink | Comments (0)

Application Deadline: February 1, 2012

The American Philosophical Society and the NASA Astrobiology Institute have partnered to promote the continued exploration of the world around us through a program of research grants in support of astrobiological field studies undertaken by graduate students, postdoctoral students, and junior scientists and scholars.

The Lewis and Clark Fund for Exploration and Field Research in Astrobiology supports field studies in any area of interest to astrobiology by graduate students, postdocs, and early-career scientists and scholars who are affiliated with U.S. institutions. Grants may be used for travel and related expenses, including field equipment, up to $5,000. Applications will be reviewed by a committee that includes members of the NAI, the APS, and the wider science community as needed. Recipients will be designated as Lewis and Clark Field Scholars in Astrobiology.

Additional information, including the application forms and instructions, is available at the APS's Lewis and Clark Fund for Exploration and Field Research in Astrobiology website: http://www.amphilsoc.org/grants/astrobiology

Posted by Keith Cowing at 2:58 PM | Permalink | Comments (0)

Volcanic-hydrothermal flow channels offer a chemically unique environment, which at first glance appears hostile to life. It is defined by cracks in the crust of the earth, through which water flows, laden with volcanic gases are contacting a diversity of minerals. And yet - it is precisely this extreme environment, where the two mechanisms could have emerged, which are at the root of all life: The multiplication of biomolecules (reproduction) and the emergence of new biomolecules on the basis of previously formed biomolecules (evolution).

At the outset of this concatenation of reactions that led eventually to the formation of cellular forms of life there are only a few amino acids, which are formed from volcanic gases by mineral catalysis. Akin to a domino stone that triggers a whole avalanche, these first biomolecules stimulate not only their own further synthesis but also the production of wholly new biomolecules. "In this manner life begins by necessity in accordance with pre-established laws of chemistry and in a pre-determined direction", declares Guenter Waechtershaeuser, honorary professor for evolutionary biochemistry at the University of Regensburg. He developed the mechanism of a self-generating metabolism - theoretically, alas, an experimental demonstration has been lacking so far.

Continue reading "Mechanism of Evolution of the Primordial Metabolism Discovered" »

Posted by Keith Cowing at 2:51 PM | Permalink | Comments (0)

The SETI Institute is pleased to announce that applications are now open for the 2012 REU (Research Experiences for Undergraduates) program in Astrobiology and Planetary Science. Undergraduate students in fields such as astronomy, biology, geology, chemistry, and physics are invited to apply to spend 10 weeks in the San Francisco Bay area working on a scientific research project in the field of astrobiology or planetary science. Students receive a stipend, travel, and living expenses. Applications are due by February 1, 2012.

For more information, visit http://www.seti.org/reu or contact Cynthia Phillips, phillips@seti.org, 650-810-0230.

Posted by Keith Cowing at 1:58 PM | Permalink | Comments (0)

Evolutionary biologist Lynn Margulis, a long-time member of the astrobiology community, died at her home on November 22. She was 73.

Margulis was brilliant, passionate, dedicated, and insatiably curious, about science, education, and life. A superb communicator as well as an outstanding scientist, she participated in hands-on teaching activities at levels from middle to graduate school, served as a faculty mentor at Boston University for years, gave much of her time to public speaking, and authored numerous books about science for scientific and public audiences, many with her son Dorion. She has been, and will remain, an inspiration to many women and men who have had the privilege of knowing her. She is irreplaceable, and the astrobiology community will miss her very much.

Always a pioneer, Margulis was the first female principal investigator of NASA's Exobiology Program (predecessor of Astrobiology), initially receiving funding for her research in microbial evolution and organelle heredity in the early 1970s. In 1980, Margulis established a Planetary Biology Internship (PBI) program, which the Exobiology/Astrobiology program has supported since its inception. Through the PBI program, which enables graduate students to work in the laboratories of scientists at NASA facilities and of NASA-supported scientists at universities, Margulis herself mentored many students who are now productive members of the astrobiology community. In 2010, Margulis served as a keynote speaker at a NASA symposium to mark the 50th anniversary of NASA's Exobiology/astrobiology program. (A video record of this talk is available at: www.livestream.com/astrobiology50th.)

Continue reading "In Memoriam: Lynn Margulis, 1938-2011" »

Posted by Keith Cowing at 12:47 PM | Permalink | Comments (0)

Date/Time: Monday, January 30, 2011 11:00AM Pacific

Presenter: Paul Davies (Arizona State University)

Abstract: Cancer is widespread among eukaryotes, and can be successfully tackled only by understanding its place in the story of life itself - especially the evolution of multi-cellularity. In this seminar I will propose a new theory of cancer, drawing on insights from astrobiology. The central hypothesis is that cancer is an organized pre-programmed process driven by a cassette of highly conserved, deeply-evolved ancient genes - genes that are active in early-stage embryo development, and which become inappropriately re-awakened in the adult form. In effect, cancer tumors are atavisms, recapitulating an ancient life form - "Metazoa 1.0" - dating back to the dawn of multi-cellularity. This hypothesis differs fundamentally from the popular notion that cancers are deregulated rogue cells running amok, and explains cancer's well-known robustness and resilience. It also offers a well-defined target for therapy.

For more information and participation instructions visit: http://astrobiology.nasa.gov/nai/seminars/detail/199 . Participation requires only an Internet connection and a browser.

Posted by Keith Cowing at 11:46 AM | Permalink | Comments (0)

Ph.D. opportunities are available in the molecular geomicrobiology of the deep biosphere in the lab of Matt Schrenk at East Carolina University (North Carolina, USA). The research involves the characterization of high pH (>10), hydrogen and methane-rich ecosystems associated with the serpentinization of ultramafic rocks from the deep Earth and involves multi-disciplinary, international research projects in Canada, Italy, and California. These projects focus on advancing our understanding of the ecology and evolution of microbial communities in the deep biosphere using both molecular and culture-based approaches. Research combines bioinformatics analyses of (meta-) genomic and transcriptomic data with field work and laboratory characterization of novel extremophiles. Applicants with a background in Biology, Earth Sciences, Oceanography, or related disciplines are encouraged to apply.

Applications for the Ph.D. program in Biology at ECU are due April 1, 2012 (http://www.ecu.edu/cs-cas/idpbs/admission.cfm). Please contact Matt Schrenk (schrenkm@ecu.edu) for further information.

Posted by Keith Cowing at 10:56 AM | Permalink | Comments (0)