Who knew you could cure disease by getting down in the mud?

Scientists in Arizona report that minerals from clay could form the basis of a new generation of inexpensive, highly-effective antimicrobials for fighting MRSA infections that are moving out of health care settings and into the community. These “superbugs” are increasingly resistant to multiple antibiotics and cause thousands of deaths each year.

Unlike conventional antibiotics that are often administered by injection or pills, the so-called “healing clays” could be used as rub-on creams or ointments to keep MRSA infections from spreading, the researchers say. The clays also show promise against a wide range of other harmful bacteria, including those that cause skin infections and food poisoning, the scientists add. Their study, one of the first to explore the antimicrobial activity of natural clays in detail, was presented today at the 235th national meeting of the American Chemical Society.

People affected by Huntington’s disease, which affects up to one person in every 10,000 but clusters in families and certain populations, develop clusters of a defective protein in their neurons and shrinkage of brain areas associated with movement. The disorder causes disability and eventually death, but does not normally manifest until after people have had children, allowing the disease gene to be passed on.

“Although Huntington’s disease is considered the epitome of genetic determinism, environmental factors are increasingly recognised to influence the disease progress”, the researchers write.

Current strategies for jaw reconstruction require multiple procedures, first to repair the bone defect to offer sufficient support, and then to place the tooth implant.

The entire procedure can be painful and time-consuming, and the desired esthetic and functional repair can be achieved only when both steps are successful. Although the patient’s quality of life can be improved significantly, the prognosis is often unpredictable, especially in young patients, whose jaws continue to grow, while the implant remains fixed.

The ability to bioengineer combined tooth and bone constructs, which would grow in a coordinated fashion with the surrounding tissues, could potentially improve the clinical outcomes, and also reduce patient suffering.

Our biological rhythm controls many metabolic functions and is based on the circadian rhythm, which is a roughly 24-hour cycle that is important in determining sleeping and feeding patterns, cell regeneration, and other biological processes in mammals.

A newly discovered rhythm discovered by NYU dental professor Dr. Timothy Bromage also originates in the hypothalamus, a region of the brain that functions as the main control center for the autonomic nervous system. Unlike the circadian rhythm, this clock varies from one organism to another, operating on shorter time intervals for small mammals, and longer ones for larger animals. For example, rats have a one-day interval, chimpanzees six, and humans eight.

Bromage discovered the rhythm while observing incremental growth lines in tooth enamel, which appear much like the annual rings on a tree. He also observed a related pattern of incremental growth in skeletal bone tissue – the first time such an incremental rhythm has ever been observed in bone.

Recent research at Yale provided a glimpse of the ancient mechanism that helped diversify our genomes; it illuminated a relationship between gene processing in humans and the most primitive organisms by creating the first crystal structure of a crucial self-splicing region of RNA.

Genes of higher organisms code for production of proteins through intermediary RNA molecules. But, after transcription from the DNA, these RNAs must be cut into pieces and patched together before they are ready for translation into protein. Stretches of the RNA sequence that code for protein are kept, and the intervening sequences, or introns, are spliced out of the transcript.

Having a husband creates an extra seven hours a week of housework for women, according to a University of Michigan study of a nationally representative sample of U.S. families.

For men, the picture is very different: A wife saves men from about an hour of housework a week.

The findings are part of a detailed study of housework trends, based on 2005 time-diary data from the federally-funded Panel Study of Income Dynamics, conducted since 1968 at the U-M Institute for Social Research (ISR).

A new coating system to paint aircraft and other equipment is, ironically, safer to human health and the environment. The breakthrough comes after two years of research and testing on trivalent chromium-based primers and sealers.

Chromium has long been used in paint to create dense, protective
coatings. This is especially important to the Army which needs to cover its equipment with paint that can resist corrosive chemical agent. However, chromium, in its hexavalent form, is a known carcinogen.

Although the Army has used chromium-6-based paint safely to protect and extend the life of its expensive equipment, it was open to trying something else that wasn't so potentially harmful both to human health and the environment.

New research from Indiana University and Yale suggests that college-age men confuse friendly non-verbal cues with cues for sexual interest because the men have a less discerning eye than women -- but their female peers aren't far behind.

In the study, appearing in the April issue of the journal Psychological Science, men who viewed images of friendly women misidentified 12 percent of the images as sexually interested. Women mistook 8.7 percent of the friendly images for sexual interest.

Both men and women were even more likely to do the opposite -- when viewing images of sexually interested women, men mistakenly called 37.8 percent of the images "friendly." Women mistook 31.9 percent of the sexual interest cues for friendliness.

Using data from the Hinode and RHESSI solar observatories, astronomers have discovered that solar flares - explosions in the atmosphere of the sun - get much hotter when they stay "focused."

Dr Ryan Milligan of Oak Ridge Association of Universities, Tennessee, who is stationed at NASA’s Goddard Space Flight Center in the US, will present his result on Wednesday 2 April at RAS National Astronomy Meeting in Belfast.

Solar flares are caused by the sudden release of magnetic energy. The largest can release as much energy as a billion one-megaton nuclear bombs. However, the flare observed in this study was a much more common "micro" flare. Researchers at space agencies like NASA and ESA want to understand flares because they generate radiation that can be hazardous to unprotected astronauts, like those walking on the surface of the Moon.

I got some questions from a writer named Captain Carrot who deduced that, because I write this column for peanuts, I must also be available for free science consultation and/or general life and relationship advice.

Here is a sample:

I am 27. Should I try to stop smoking, or will I regret it later in life?

Most of you know me well enough by now to realize that, unless you provide proof you are a supermodel, I am unlikely to even bother learning to spell your name.