Thursday, December 2, 2010

NASA: SURPRISE! LIFE CAN TAKE MANY UNEXPECTED FORMS

 NASA PRESS RELEASE: 10-32
NASA-FUNDED RESEARCH DISCOVERS LIFE BUILT WITH TOXIC CHEMICAL

WASHINGTON -- NASA-funded astrobiology research has changed the fundamental knowledge about what comprises all known life on Earth.

Researchers conducting tests in the harsh environment of Mono Lake in California have discovered the first known microorganism on Earth able to thrive and reproduce using the toxic chemical arsenic. The
microorganism substitutes arsenic for phosphorus in its cell components.

"The definition of life has just expanded," said Ed Weiler, NASA's associate administrator for the Science Mission Directorate at the agency's Headquarters in Washington. "As we pursue our efforts to
seek signs of life in the solar system, we have to think more broadly, more diversely and consider life as we do not know it."

This finding of an alternative biochemistry makeup will alter biology textbooks and expand the scope of the search for life beyond Earth.

The research is published in this week's edition of Science Express.
Carbon, hydrogen, nitrogen, oxygen, phosphorus and sulfur are the six basic building blocks of all known forms of life on Earth. Phosphorus is part of the chemical backbone of DNA and RNA, the structures that
carry genetic instructions for life, and is considered an essential element for all living cells.

Phosphorus is a central component of the energy-carrying molecule in all cells (adenosine triphosphate) and also the phospholipids that form all cell membranes. Arsenic, which is chemically similar to
phosphorus, is poisonous for most life on Earth. Arsenic disrupts metabolic pathways because chemically it behaves similarly to phosphate.

"We know that some microbes can breathe arsenic, but what we've found is a microbe doing something new -- building parts of itself out of arsenic," said Felisa Wolfe-Simon, a NASA astrobiology research
fellow in residence at the U.S. Geological Survey in Menlo Park, Calif., and the research team's lead scientist. "If something here on Earth can do something so unexpected, what else can life do that we haven't seen yet?"

The newly discovered microbe, strain GFAJ-1, is a member of a common group of bacteria, the Gammaproteobacteria. In the laboratory, the researchers successfully grew microbes from the lake on a diet that was very lean on phosphorus, but included generous helpings of arsenic. When researchers removed the phosphorus and replaced it with arsenic the microbes continued to grow. Subsequent analyses indicated
that the arsenic was being used to produce the building blocks of new GFAJ-1 cells.

The key issue the researchers investigated was when the microbe was grown on arsenic did the arsenic actually became incorporated into the organisms' vital biochemical machinery, such as DNA, proteins and
the cell membranes. A variety of sophisticated laboratory techniques were used to determine where the arsenic was incorporated.
The team chose to explore Mono Lake because of its unusual chemistry, especially its high salinity, high alkalinity, and high levels of arsenic. This chemistry is in part a result of Mono Lake's isolation from its sources of fresh water for 50 years.
The results of this study will inform ongoing research in many areas, including the study of Earth's evolution, organic chemistry, biogeochemical cycles, disease mitigation and Earth system research.

These findings also will open up new frontiers in microbiology and other areas of research.

"The idea of alternative biochemistries for life is common in science fiction," said Carl Pilcher, director of the NASA Astrobiology Institute at the agency's Ames Research Center in Moffett Field, Calif. "Until now a life form using arsenic as a building block was only theoretical, but now we know such life exists in Mono Lake."

The research team included scientists from the U.S. Geological Survey, Arizona State University in Tempe, Ariz., Lawrence Livermore National Laboratory in Livermore, Calif., Duquesne University in Pittsburgh and the Stanford Synchrotron Radiation Lightsource in Menlo Park.

NASA's Astrobiology Program in Washington contributed funding for the research through its Exobiology and Evolutionary Biology program and the NASA Astrobiology Institute. NASA's Astrobiology Program supports research into the origin, evolution, distribution and future of life on Earth.

For more information about the finding and a complete list of researchers, visit:

http://astrobiology.nasa.go/

-end-

CODA 1: "Aliens" from Right Here?

The time has finally come for NASA's heavily anticipated press conference, which has generated quite the Internet buzz since the space agency released an enticingly ambiguous press briefing previewing the announcement of an "astrobiology finding that will impact the search for evidence of extraterrestrial life."


However, according to more sober minded, but still panting-with-anticipation, chomping at the bit web observers, the truth may be a bit closer to home:
According to Steven Hoffer at the AOL News Surge Desk:
"Rumors hold that NASA researchers have discovered an arsenic-based bacteria living in California's Lake Mono, a finding that radically expands the number of potential habitats for extraterrestrial life to places previously considered unsuitable..."

The NASA News Conference is scheduled for 2 PM here.

Space is the Place: NASA News Conference 2PM Today on Extraterrestrial Life Stirs Excitement


It might be an overhyped bit of scientific minutiae, but NASA's astrobiology team plans to have an important announcement for today, Thursday, December 2. All NASA will say about the press conference is that it will "discuss an astrobiology finding that will impact the search for evidence of extraterrestrial life."



Brad Sylvester of "Space Matters" via Yahoo News offers his best guess: "My guess, and it is only a guess, is that a new chemical basis for life has been modeled resulting in the discovery of a unique chemical signature that, if found in an extraterrestrial rock (or a terrestrial rock, for that matter), would be a smoking gun for the past presence of this type of life. Perhaps, they have even actually found such evidence, either with a visual examination of martial soils by the rovers, or in meteorite fragments found in the arctic."

Brad Sylvester's article here

Megan Levy of New Zealand's Stuff online reviews and shares rebuttals of some of the rumors here including those stoked by Blogger Jason Kottke's website here

The NASA News Conference is scheduled for 2 PM, Eastern Standard Time. Official NASA site here

Current Reading

  • Midnight Rising: John Brown and the Raid that Sparked the Civil War- Tony Horwitz
  • A Sultan in Palermo - Tariq Ali
  • Hitch-22: A Memoir - Christopher Hitchens
  • Negropedia- Patrice Evans
  • Dead Funny: Humor in Nazi Germany - Rudolph Herzog
  • Exile on Main Street - Robert Greenfield
  • Among the Truthers - A Journey Among America's Growing Conspiracist Underworld - Jonathan Kay
  • Paradise Lost - John Milton
  • What Is Your Dangerous Idea? Thinking the Unthinkable - John Brockman
  • Notes from the Edge Times - Daniel Pinchbeck
  • Fringe-ology: How I Can't Explain Away the Unexplainable- Steve Volk
  • Un Juif pour l'exemple (translated as A Jew Must Die )- Jacques Cheesex
  • The God Delusion - Richard Dawkins
  • Pale King - David Foster Wallce
  • David Bowie: Starman bio - Paul Trynka
  • Tobacco Stained Mountain Goat - Andrez Bergen
  • The Future of Nostalgia -Svetlana Boym
  • Living in the End Times - Slavoj ZIzek
  • FIrst as Tragedy Next as Farce - Slavoj Zizek
  • How to Survive a Robot Uprising - Daniel Wilson
  • Where is My Jet Pack? -Daniel Wilson
  • Day of the Oprichniks - Vladimir Sorokin
  • Ice Trilogy - Vladimir Sorokin
  • First Civilizations
  • Oscar Wilde -Andre Maurois
  • The Beats - Harvey Pekar, et al
  • SDS - Harvey Pekar, et al
  • The Unfinished Animal - Theodore Roszak
  • Friends of Eddy Coyle
  • Brooklands -Emily Barton
  • Abraham Lincoln - Vampire Hunter - Seth Grahme-Smith - Entertaining and historical
  • Dictionary of the Khazars - Pavic
  • Sloth-Gilbert Hernandez
  • War and Peace- Leo Tolstoy
  • Charles Addams: An Evilution
  • Life in Ancient Greece
  • Time - Eva Hoffmann
  • Violence - S. Zizek
  • Luba - a graphic novel by Gilbert Hernandez
  • Life in Ancient Egypt
  • Great Apes - Will Self - riveting and disturbing
  • Lost Honor of Katherina Blum - Heinrich Boll - could not put it down
  • Yellow Back Radio Brokedown - Ishmael Reed (author deserving of new wide readership)
  • Living in Ancient Mesopotomia
  • Landscape in Concrete - Jakov Lind - surreal
  • 'There Once Lived A Woman Who Tried To Kill Her Neighbor's Baby'-Ludmilla Petrushevskaya - creepy stories - translation feels literarily "thin"
  • Mythologies - William Butler Yeats (re-read again & again)
  • How German Is It ? - Walter Abish
  • The Book of Genesis - illustrated by R. Crumb - visionary
  • "Flags" - an illustrated encyclopedia - wish I could remember all of these. Flag culture
  • Sirens of Titan - Kurt Vonnegut
  • Ubik - Philip K. Dick
  • Nobody's Fool - Richard Russo
  • Hitler's Empire - Mark Mazower
  • Nazi Culture - various authors
  • Master Plan: Himmler 's Scholars and the Holocaust - Heather Pringle
  • Eichmann in Jerusalem - Hannah Arendt
  • Living in Ancient Rome
  • Traveling with Herodotus -R. Kapuszynsky
  • Oblivion - David Foster Wallace - Some of his greatest work
  • Infinite Jest - David Foster Wallace - still wrestling with this great book
  • Netherland - Joseph O'Neill - staggeringly great read
  • Renegade - The Obama Campaign - Richard Wolffe
  • Mount Analogue - Rene Daumal
  • John Brown
  • Anathem - Neal Stephenson - love Stephenson but tough slogging first few chapters
  • 7 Deadly Sins
  • ALEX COX - Alex Cox
  • FIASCO by Thomas Ricks
  • I, Fellini - Charlotte Chandler & Federico Fellini
  • Best of 20th century alternative history fiction
  • Judah P. Benjamin - Eli Evans - Confederacy's Secretary of State & source of the W.C. Field's exclamation
  • Moscow 2042 - Vladimir Voinovich - Pre-1989 curiosity & entertaining sci fi read; love his portrayal of Solzhenitsyn-like character
  • Gomorrah - Roberto Saviano - Mafia without the It-Am sugar coating. Brutal & disturbing
  • The Sack of Rome - Celebrity+Media+Money=Silvio Berlusconi - Alexander Stille
  • Reporting - David Remnick - terrific journalism
  • Fassbinder
  • Indignation - Philip Roth
  • Rome
  • Let's Go Italy! 2008
  • Italian Phrases for Dummies
  • How to Pack
  • Violence - Slavoj Zizek
  • Dali: Painting & Film
  • The Gang That Couldn't Shoot Straight - Jimmy Breslin
  • The Good Rat - Jimmy Breslin
  • Spook Country - William Gibson
  • A Blue Hand - The Beats in India - Deborah Baker
  • The Metaphysical Club - Louis Menard
  • Coast of Utopia - Tom Stoppard
  • Physics of the Impossible - Dr. Michio Kaku
  • Managing the Unexpected - Weick & Sutcliffe
  • Wait Til The Midnight Hour - Writings on Black Power
  • Yellow Back Radio Brokedown - Ishmael Reed
  • Burning Down the Masters' House - Jayson Blair
  • Howl - Allen Ginsberg
  • Cat's Cradle - Kurt Vonnegut
  • The Palace Thief - Ethan Canin
  • John Adams - David McCullough
  • The Wooden Sea - Jonathan Carroll
  • American Gangster - Mark Jacobson
  • Return of the King - J.R.R. Tolkien
  • Gawker Guide to Becoming King of All Media
  • Jews and Power - Ruth Wisse
  • Youth Without Youth - Mircea Eliade
  • A Team of Rivals - Doris Goodwin
  • Ghost Hunters -William James and the Search for Scientific Proof of Life After Death - Deborah Blum
  • Dream -Re-Imagining Progressive Politics in an Age of Fantasy - Stephen Duncombe
  • Love & Theft - Eric Lott
  • Exit Ghost - Philip Roth
  • Studio A - The Bob Dylan Reader

Current Listening

  • Alexi Murdoch Wait
  • Wilco Summer Teeth
  • Wilco The Album
  • Carmina Burana - Ray Manzarek (& Michael Riesmann)
  • Polyrock - Polyrock
  • 96 Tears - Garland Jeffries
  • Ghost of a Chance Garland Jeffries
  • Yellow Magic Orchestra
  • Mustang Sally Buddy Guy
  • John Lee Hooker
  • Black and White Years
  • Together Through Life - B. Dylan
  • 100 Days 100 Nites - Sharon Jones & The Dap Kings
  • DYLAN: 3 disc Greatest...
  • Glassworks - Philip Glass
  • Wild Palms - Soundtrack -Ryuichi Sakamoto
  • Dinah Washington - Best of..
  • Commander Cody& His Lost Planet Airmen Live at Armadillo