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Cell Biology

Science Potpourri
October 13, 2006
Interesting articles from recent issues of Science have piled up in the queue.  These might have made separate entries in CEH if time and space were unlimited. Deep Impact:  The team of the Deep Impact mission to a comet published spectral results in the July 13 issue.  “Emission signatures due to amorphous and crystalline silicates, […]
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Health

Stem Cells: Hurry Up and Wait
October 13, 2006
When will embryonic stem cells produce cures for Parkinson’s disease, multiple sclerosis, paralysis and other maladies these wonder-cells were promised to bring?  Be prepared to wait.  If predictions of leading proponents are accurate, and if California is to be a world leader in stem cell research and clinical trials, even Christopher Reeve would have died […]
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Amazing Facts

Japanese Man Sets Memory Record
October 4, 2006
Item: a Japanese man, Akira Haraguchi (age 60), quoted pi to 100,000 decimal places, reported Live Science.  It took 16 hours to say the digits from memory.  This broke his personal best of 83,431 set in 1995, and the Guinness record of 42,195, also set in 1995. Incredible feats like this hint at the innate […]
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Mind and Brain

Mars Radiation Would Fry Astronaut Brains
September 23, 2006
Imagine the first Martian astronauts coming home confused, impaired and demented. This is the risk from solar radiation on Mars, say a group of NASA medical researchers (see RxPG News). Among the gravest risks of a manned flight to Mars ranks the possibility that massive amounts of solar and cosmic radiation will decimate the brains […]
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Health

Embryonic Stem Cells No Longer Needed?
August 25, 2006
Two announcements this week may make harvesting embryonic stem cells obsolete.  First, it’s not necessary to kill an embryo to get a stem cell, reported Associated Press (see Fox News) and Live Science.  While this does not solve all the ethical problems, a White House spokeswoman called it “encouraging to see scientists at least making […]
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Bible and Theology

Crossing the Line for Looks That Could Kill
August 13, 2006
President Bush may have vetoed one stem-cell bill for moral reasons (see Brad Harrub’s report on Apologetics Press), but in other countries where Judeo-Christian values are less prevalent, morality seems a low hurdle in the race to exploit biological resources that promise health, youth, beauty – and money.     With embryonic stem cell research […]
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Early Man

Human Heads Are Shrinking
August 5, 2006
There’s no correlation between brain size and intelligence, and if anything, brains today have gotten smaller since the days of our Pleistocene ancestors.  That’s the gist of a report on ABC News Australia based on research at the Queensland Institute of Medical Research: “The genes that are thought to have helped humans evolve big brains […]
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Amazing Facts

Bacteria Rule the World – Benevolently
August 2, 2006
We should love bacteria, not annihilate them.  Bacteria are our friends, according to Dianne K. Newman of Caltech:1 As a microbiologist, I’m appalled when I go to buy soap or dishwashing detergent, because these days it’s hard to find anything that doesn’t say ‘antibacterial’ on it…. It’s a commonly held fallacy that all bacteria are […]
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Amazing Facts

Eye Sends Information at Ethernet Rates
July 27, 2006
Neuroscientists from Pennsylvania and New Jersey calculated the information rate of the eye.  Using guinea pigs (real guinea pigs, not humans as guinea pigs), they came up with a number and interpolated it for humans: In the classic “What the frog’s eye tells the frog’s brain,” Lettvin and colleagues showed that different types of retinal […]
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Biomimetics

Honey More Effective than Antibiotics
July 27, 2006
A good old nature remedy is making a comeback: honey for wounds.  An article on EurekAlert about research at the University of Bonn states that honey is more effective than antibiotics at healing cuts and wounds.  Apparently the ancient Egyptians knew about its healing power.  Honey rejects dead tissue faster, repels bacteria, promotes more rapid […]
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Amazing Facts

Eye Can See Clearly Now
July 17, 2006
The cornea has no blood vessels.  That’s weird.  But it’s a good thing, or we would be looking through a network of threadlike strands all the time.  According to EurekAlert, scientists at Scheppens Eye Institute decided to find out how the cornea stays clear.  They found that it is heavily stocked with a special protein, […]
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Amazing Facts

Why Your Knuckles Pop
July 10, 2006
Science reporter Corey Binns occasionally decorates LiveScience with articles about the human body that are informational as well as amusing.  His latest is about cracking knuckles and creaking joints.  We have four kinds of joints (pivot, ball-and-socket, sliding and hinge), which he illustrates with diagrams that look like machinery.  The pops and creaking noises, he […]
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Human Body

Evolving Consciousness Without a Soul
July 7, 2006
A paper tackling the theory of consciousness begins, Any scientific study of consciousness is based on the premise that phenomenal experience is entailed by neuronal activity in the brain.  Given this premise, an adequate theory of consciousness must be consistent with physics and with evolutionary principles.  Nonphysical or dualistic forces or processes must be excluded, […]
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Health

Rip Van Winkle Revives
July 3, 2006
A man in a coma 19 years has regained some brain function, surprising scientists.  Terry Wallis is relearning how to count and speak, and thinks Ronald Reagan is still president.  The story of his remarkable recovery has been reported widely in the news (see Fox News) and was featured on both News@Nature and Science Now.  […]
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Early Man

The Evolution of Immaturity
June 28, 2006
[Guest Article]  Blame evolution for your teen’s immaturity.  The Discovery Channel has published a review of an upcoming paper by Bruce Charlton, professor of biology at the University of Newcastle upon Tyne, England.  Charlton is a promoter of Evolutionary Psychology, a developing field of Psychology that attempts to explain all human characteristics in light of […]
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