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Science News for August 19, 2004


First solid evidence that the study of music promotes intellectual development

A study published in Psychological Science found that extra-curricular music lessons significantly improved IQ scores and academic performance in six-year-old children. The research, led by Dr. E. Glenn Schellenberg, showed that music lessons had a more pronounced effect on cognitive development than drama lessons or no lessons at all.

SourceAssociation for Psychological Science·JournalPsychological Science·DateAug 19, 2004

Imported fitness

Researchers discovered a specific Mlo gene fragment in the genome of mutant barley, which enables plants to resist powdery mildew. The mutation is believed to have occurred less than 10,000 years ago in Ethiopia, highlighting the importance of preserving crop diversity.

SourceMax-Planck-Gesellschaft·JournalNature·DateAug 19, 2004

Muscles are smarter than you think

Researchers discovered that muscles use acidosis to maintain proper nerve signal response, avoiding fatigue. By peeling away the muscle fiber's surface membrane, the team studied the effects of acidity on force response, finding it counteracts fatigue at a critical step in excitation-contraction-coupling.

SourceLa Trobe University·JournalScience·DateAug 19, 2004

Invaders that did no harm?

The Panama Biological Survey (1910-1912) tracked fish migration between the Atlantic and Pacific slopes of Panama's Isthmus. New research finds that dispersal played a key role in increasing species richness in local freshwater fish assemblages, even after many generations.

SourceSmithsonian Tropical Research Institute·JournalProceedings of the Royal Society of London·DateAug 19, 2004