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Cell Biology

The Evolution of Electrical Engineering:  An Imaginary Tale
January 17, 2007
Nerves carry electrical impulses.  Ipso facto, they are subject to laws of physics concerning conductance, capacitance, and resistance.  Getting a signal from one end of an animal to the other in time can be a matter of life and death.  In order to maintain optimum levels of electrical conductivity to meet their lifestyle requirements, animals […]
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Cell Biology

Are Cellular Motors Related by Evolution?
January 5, 2007
Just because two things go round and round, does that make them related by common ancestry?  A Japanese team thinks so.  A bacterial flagellum rotates (06/04/2002).  So does ATP synthase, though it is about 10 times smaller (04/30/2004).  Publishing in PNAS,1 these researchers looked for a relationship, and noted that these two motors bear some […]
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Amazing Facts

This Bacterium Moves Like a Tank
January 3, 2007
Mark McBride (U of Wisconsin) has been trying for a decade to figure out how a gliding bacterium glides.  His conclusion: the microbe has tire treads like a conveyor belt that make it roll over a variety of surfaces, like an all-terrain vehicle.     According to a U of Wisconsin press release, the Department […]
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Genetics

In Science and Politics, Expect the Unexpected
December 29, 2006
Two findings reported this month illustrate how science changes.  Paradigms and policies can have their scientific underpinnings yanked out from under them, causing both consternation and opportunities for new ways of thinking. Bring back the acid rain:  Pick your poison: acid rain or global warming.  Acid rain was the bogeyman of the 1980s, leading to […]
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Amazing Facts

Cell Zippers, Linemen and Editors Put on a Show
December 28, 2006
The golden age of cell biology continues.  Scientists keep unlocking the secrets of cellular machinery with newer and better techniques.  With the curtain rising on a show we could not previously imagine, played out on a stage so small it took centuries of scientific work to even see it, biochemists are discovering amazing tricks that […]
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Fossils

Incredible Stasis in Evolution: What Does It Mean?
December 26, 2006
Quite often in phylogenetic research, evolutionists find examples of extreme conservation of genes or traits.  How they explain the lack of change is almost as interesting as the phenomenon itself.  Here are two recent examples. Your cousin the shark:  Surprise: you have more in common with horn sharks than bony fishes do.  Craig Venter’s international […]
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Amazing Facts

Animal Plan IT
December 15, 2006
Imitating animal technology is one of the hottest areas in science.  The engineering and information technology (IT) observable in living things continues to astonish scientists and makes engineers want to imitate nature’s designs.  Biomimetics is leading to productive, useful discoveries helping solve human problems and leading to a better life for all.  Here are some […]
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Cell Biology

Mutations Accelerate Each Other’s Damage
December 14, 2006
As reported in our 10/14/2004 entry, mutations do not work in isolation; even the good kind usually conspire against the host.  This fact has been largely ignored by neo-Darwinists.  Some researchers at the Weizmann Institute in Rehovot, Israel, writing in Nature,1 tested the interaction of mutations (epistasis) on proteins.  They found, in short, that harmful […]
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Amazing Facts

The Nature of Cellular Tech
November 30, 2006
For molecule-size entities working in the dark, cellular machines seem pretty clever.  Here are some tricks they perform day and night to keep life functioning, described this month in Nature and PNAS.  Cell biology is sounding more and more like a mixture of Popular Mechanics and Wired. Energy balancing act:  Cells have to use oxygen […]
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Early Man

Genetic Study Points to Three Ancestral Families of Humans
November 24, 2006
In a paper just published in Nature,1 scientists mapped the DNA of 270 people from four people groups: European, African, Chinese, and Japanese.  The scientists were looking for sections of DNA that are either missing or duplicated.  Many sections of our DNA appear over and over again.  The number of extra copies varies between individuals […]
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Amazing Facts

Take Your Flu Pill: Vitamin D
November 21, 2006
Vitamin D may be a multi-purpose germ fighter.  An article by Janet Roloff in Science News1 gathered evidence from several research labs that strongly suggests this molecule triggers the formation of one of the body’s effective antiviral, antibacterial, antifungal agents: cathelicidin.  In its activated form, vitamin D binds to a short section of DNA called […]
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Amazing Facts

Outsource Our Energy Woes to the Microbes
November 18, 2006
Do we need to dig for oil forever?  Do we need to fret and fume over energy policy as more consumers compete for decreasing resources?  What if there were a virtually inexhaustible supply right under our noses?  That’s what the American Society for Microbiology asked in a press release reproduced by EurekAlert.  “The answer to […]
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Amazing Facts

A Cell Technology Show
November 17, 2006
The basic units of life continue to astound scientists with their tricks.  Here are a few recent samples: Valuable junk:  The complementary or “antisense” strands of certain RNAs that latch onto messenger RNAs are not just junk anymore.  Science Daily reported that these genetic oddities, “previously thought to have no function, may in fact protect […]
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Dumb Ideas

Urchin Genome Hyped by Media as Human Cousin
November 10, 2006
The publication of a new genome for a plant or animal is becoming routine.  For some reason, the news media instantly jumped on claims that the genome of the sea urchin, published in Science, means that evolution is all but figured out, and that we should each feel a special place in our hearts for […]
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Dumb Ideas

Junk Is the Essence of Mankind
November 9, 2006
Christians may proclaim “God don’t make no junk” but evolutionists boast of our junky heritage.  Erika Check wrote in Nature this week,1 “It’s the junk that makes us human.”  She was referring to non-coding DNA, long considered “junk DNA.”  There is growing awareness that these sections of unclear function are involved in the regulation of […]
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