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Science News for March 3, 2006


Convergent evolution of molecules in electric fish

Scientists found that African and South American fish independently developed electric organs by altering sodium channel proteins, allowing them to generate and sense electric fields. This convergent evolution of molecules provides valuable insights into the role of genes in human health and disease.

SourceUniversity of Texas at Austin·JournalProceedings of the National Academy of Sciences·DateMar 3, 2006

From biological imaging to Sudoku solutions

A new algorithm, developed by Cornell University researchers, can reconstruct detailed images of small specimens from raw data using X-ray diffraction microscopy. The algorithm also solves the internationally popular puzzle Sudoku, appealing to its creator's 'whimsical side'.

SourceCornell University·JournalProceedings of the National Academy of Sciences·DateMar 3, 2006

Hearts hurt when spouses spat

A study of 150 healthy married couples found that hostility in women was associated with atherosclerosis, while controlling behavior in men or their wives was linked to increased hardening of the arteries. The findings suggest that low-quality relationships are a risk factor for cardiovascular disease.

New method for identifying microbes

Brookhaven scientists developed a technique called single point genome signature tagging to identify key segments of genetic code. This allows for rapid sequencing and distinction among species, with potential applications in identifying pathogens and assessing environmental responses.

SourceDOE/Brookhaven National Laboratory·JournalApplied and Environmental Microbiology·DateMar 3, 2006