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Genetics

Whence Plague?
May 8, 2008
Where did bubonic plague come from?  Science News reported that two mutations turned the bacterium from a docile, innocuous bacterium into a curse.     The combination of two mutations disabled the gene for aspartase, an enzyme that breaks down aspartic acid.  When the crippled Yersinia pestis enters a host, more aspartic acid is generated […]
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Fossils

Evolution After the Fact
April 4, 2008
Many scientific theories are evaluated on their ability to make predictions.  Good theories suggest experiments that lead a researcher to discover new things.  In biology, however, “evolution” is a word often invoked as an after-market explanation for observations that emerged outside of the theory.  Here are some recent examples: Ant farm:  Science Daily reported on […]
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Health

Mars Lacks Safety Shield for Humans
April 3, 2008
Forget all those optimistic, futuristic sci-fi tales of humans landing on Mars.  It isn’t safe, said Space.com.  NASA’s space radiation program doubts that a human body could survive prolonged exposure to space.  This is a problem for long stays on the moon, too.     “The magnetic field of Earth protects humanity from radiation in […]
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Health

Mr. Clean Is Sick
March 9, 2008
Do you get sick too easily?  Did you grow up with allergies?  One reason might be your home environment is too clean, says a story on PhysOrg.     The “hygiene hypothesis” asserts that our immune system over-reacts to lack of stimulation by turning on itself – producing autoimmune diseases and allergies.  It “blames increased […]
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Health

For Healthy Society, Father Knows Best
February 18, 2008
Science Proves Common Sense Dept.  Swedish scientists have found that “Children Who Have An Active Father Figure Have Fewer Psychological And Behavioral Problems,” according to a report on Science Daily.  In addition, “Children who lived with both a mother and father figure also had less behavioural problems than those who just lived with their mother.”  […]
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Health

Beat the Crowds: Go Outdoors
February 4, 2008
Fewer people are feeling close to nature, said a report on PhysOrg.  According to a study done by Oliver Pergams (U of Illinois) and Patricia Zaradic (Environmental Leadership Program, Pennsylvania), a decline in visitation at national parks corresponds to an increase in sedentary activities like playing video games, surfing the Internet and watching movies.  They […]
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Astronomy

Zatta Fact?  “Scientific Facts” Evolve
January 14, 2008
Every once in awhile it is good to be reminded that “scientific facts” are in a constant state of revision.  Here are some recent examples of scientists with surprised looks on their faces: Cholesterol for health:  Surprise, says EurekAlert: cholesterol may actually pose health benefits.  “… don’t push aside bacon and eggs just yet,” it […]
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Cell Biology

Stem Cells: It’s a New Ball Game
January 10, 2008
A year ago, the ethical battle over human embryonic stem cells was raging.  Now, both Science and Nature have acknowledged that the new induced pluripotent stem cell technology (see 11/20/2007) has opened up a new era that may make embryonic stem cells practically obsolete.     Martin Pera, writing in Nature1, left open only a […]
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Health

Your Body Says: Resolve to Exercise
December 26, 2007
Even moderate exercise can prevent health risks, an article in Science Daily says.  Want to keep the waist trim?  Reduce the bad cholesterol and triglycerides, and increase your HDLs?  Want to lower your risk of diabetes, heart attack and stroke?  Then get out and walk.  You don’t have to become a jogger or gym addict.  […]
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Cell Biology

Will Adult Stem Cells Cure Sickle Cell Anemia?
December 9, 2007
It’s been just weeks since two labs announced success harvesting pluripotent stem cells from skin cells (11/20/2007), and already beneficial applications are in sight.  Science Daily and Live Science reported on initial tests that show the new “induced pluripotent stem cells” offer hope for millions afflicted with sickle-cell anemia.  Though it’s too early to tell […]
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Health

Appendix to the Vestigial Organs Story: Whoops, Function Found
October 6, 2007
The appendix is not just a useless organ left over from our evolutionary past, new research is showing.  According to an Associate Press article (see MSNBC News), this “seemingly useless organ may produce, protect good germs for your gut.”  Scientists at Duke University Medical School believe that the appendix can regenerate the normal bacterial flora […]
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Cell Biology

Stem-Cell Advocates Try to Shield Ethical Concerns
September 26, 2007
Would an embryonic stem cell by another name cease being human?  Several recent articles on embryonic stem cells are going beyond just touting the potential cures from the controversial research, which involves creating and destroying a human embryo.  Some are blurring the line between embryonic and adult stem cells (cf. 12/02/2006) and attempting to avoid […]
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Health

Gratitude Protects Against Health Loss
August 15, 2007
A study in the “new science of gratitude” showed that thankfulness is good therapy.  Researchers at UC Davis and Mississippi University for Women tracked 12 female patients who kept journals of their hospital stays while receiving organ transplants.  A control group just reported “medication side-effects, how they felt about life overall, how connected they were […]
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Cell Biology

Keep the Stem Cell News Straight
July 19, 2007
Stem cell technology continues to make news, but the phrase “stem cells” alone can mask serious ethical issues.  Adult stem cells (AS) and embryonic stem cells (ES) are both being investigated for their ability to transform into any cell type in the body.  Both are advertised as promising dramatic cures for debilitating diseases, with their […]
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Dinosaurs

Chinese Eat Dragon Bone for Health
July 4, 2007
Chinese villagers dig up dinosaur bones for health food.  Yahoo News reported, “Villagers in central China dug up a ton of dinosaur bones and boiled them in soup or ground them into powder for traditional medicine, believing they were from flying dragons and had healing powers.”  The article says the bones are calcium rich and […]
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