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Origin of Life

Astrobiologists Pool Their Ignorance at AbSciCon
May 1, 2008
A big conference on Astrobiology was held in Santa Clara, California last month.  It was the fifth AbSciCon (Astrobiology Science Conference), a bi-annual cross-disciplinary event.  This one pulled together 675 researchers from 28 countries across a variety of disciplines, all interested in life in space.  Naturally, evolution was an overarching theme.  From Edna DeVore’s account […]
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Cell Biology

Watch for Falling Amino Acids
April 8, 2008
A long-standing problem of origin-of-life theories is how proteins became left-handed.  Amino acids, the building blocks of proteins, come in right-handed and left-handed forms, yet life uses only the left-handed form.     The two isoforms are otherwise identical—yet one amino acid of the wrong hand in a protein spells doom for its function.  Wherever […]
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Origin of Life

Enceladus: Hotter Chemical Plume Found
March 26, 2008
Initial results of Cassini’s March 12 flyby of Enceladus have been published.  You can watch a replay of today’s press briefing, read the blog, and read illustrated bulletins about the organic material, chemical signatures, hot spot locations, the stellar occultation (see also the Quicktime animation).  Another article shows the plume locations.  An astrobiologist (Chris McKay) […]
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Origin of Life

Simple Molecules: The Building Blocks of Lie
March 19, 2008
At a physical level, everything in the universe is made of atoms and molecules.  Life, being a subset of everything in the universe, is composed of a subset of all molecules that exist.  It could be said that any atom or molecule present in a living thing is a building block of life, but how […]
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Astronomy

Astrobiology Justifying Itself
March 16, 2008
Is astrobiology a legitimate science?  Seth Shostak, director of the SETI Institute, tried to answer that question in the weekly SETI Thursday column on Space.com.  He estimates there are “approximately a thousand scientists who would be proud to print ‘astrobiologist’ on their business cards.”  Astrobiology still gets a cool reception in some quarters.  Shostak likened […]
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Origin of Life

Mars Life Hung Out to Dry in Salt
February 18, 2008
Scientists have just about hanged the possibility for life on Mars.  At first, the acid measured by the Spirit and Opportunity rovers made the environment look inhospitable.  “Now, we also appreciate the high salinity of the water when it left behind the minerals Opportunity found,” said Mark Knoll on a JPL press release.  “This tightens […]
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Dumb Ideas

Life Is Earth’s Waste Dump
February 15, 2008
Exclusive  Most evolutionists and philosophers recognize the origin of life as one of the most difficult questions to broach from a materialist standpoint.  Dr. Michael Russell, however, made it sound very easy to a large audience gathered in JPL’s auditorium on February 4.  In a talk titled confidently, “How Life Began on our Water World […]
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Origin of Life

Leslie Orgel’s Last Testament: Pigs Don’t Fly, and Life Doesn’t Just Happen
January 26, 2008
Leslie Orgel's last written article before his death shows no patience for hypothetical scenarios for the origin of life.
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Dumb Ideas

Nuke Sand, Get Life
January 23, 2008
Glowing sand was your cradle, claimed The Telegraph.  “The sifting and collection of radioactive material by powerful tides could have generated the complex molecules that led to the evolution of carbon-based life forms –including plants, animals and humans.”     The article acknowledged that “radiation may seem an unlikely candidate to kick-start life because it […]
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Dumb Ideas

Origin of Life: Food for Queazy Thought
December 6, 2007
New theories of the origin of life seem to come and go like fashion trends.  A biochemist at University of California at Santa Barbara (Helen Hansma) put out a new plot line about biomolecules forming between the protective flakes of mica.  This was all Dave Mosher at Live Science (see reprint on MSNBC) needed to […]
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Dumb Ideas

Magicians through the Looking Glass
November 29, 2007
A leading origin-of-life researcher passed away last month: Leslie Orgel.  Gerald Joyce paid him tribute in Nature.1  Orgel worked closely with other famous origin-of-life people like Stanley Miller, and was a leader in the “RNA world” scenario for the origin of life.  Joyce appreciated his rigid empiricism: Although Orgel was a theoretician, he always demanded […]
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Origin of Life

No Salt, Please: Europa Life Needs It Bland
November 23, 2007
Salt may taste good on human food, but for life trying to emerge in the sea, it is toxic.  Astrobiologists have long wondered if life could exist at Jupiter’s moon Europa, where an ocean is believed to exist miles deep under the icy crust.  They must have been presuming the water is pure, but an […]
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Dumb Ideas

SETI Researcher Writes Children’s Poem
November 22, 2007
For a feature called “SETI Thursday” at Space.com, Dr. Laurence Doyle has written a childish poem about how life brought itself up from nothing to galactic explorers.  It begins, “When the Earth was young, and the Moon nearby, in a cometary sea, prokaryotic thoughts arose, what fun it is to be!”  The idea of evolving […]
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Dumb Ideas

Crystal Power Is Not Evolution
October 30, 2007
What would Max Planck think?  The Institute named after him put out a press release, “Evolution in the Nanoworld,” that claims that synthetic molecules can organize themselves by an evolutionary principle of selection: The automatic molecular assembly and selection steps exhibited by the molecules, which start as random mixtures, demonstrates a fundamental step in the […]
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Origin of Life

Is Adenine Additive?
October 22, 2007
A paper in PNAS argues that adenine can form in plausible prebiotic conditions.1  Does this add to the story of chemical evolution leading to life on Earth?     Some chemists at the University of Georgia explored the chemical steps necessary to form adenine (one of the bases used in DNA).  Adenine has been found […]
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