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Science News for August 27, 2004


Quark study breaks logjam between theory, experiment

Physicists have demonstrated that their theories are correct in explaining how quarks interact in the beta decay of particles. The team's work marked the first time all relevant measurements were made together in one modern, statistically rigorous experiment.

SourceUniversity of Chicago·JournalPhysical Review Letters·DateAug 27, 2004

Study suggests stress of task determines if estrogen helps cognition

Researchers suggest that hormone levels interact with stress and memory systems to affect cognitive performance. The study used a water maze task, dividing female rats into groups based on their hormone levels and exposure to warm or cold water temperatures.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalBehavioral Neuroscience·DateAug 27, 2004
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NIST unveils chip-scale atomic clock

The chip-scale atomic clock is the world's smallest, consuming less than 75 thousandths of a watt and stable to one part in 10 billion. It has potential uses in wireless communications, GPS receivers, and could replace quartz crystal oscillators in common products with improved time keeping.

SourceNational Institute of Standards and Technology (NIST)·JournalApplied Physics Letters·DateAug 27, 2004

Children with ADHD benefit from time outdoors enjoying nature

A significant reduction of ADHD symptoms was observed among children participating in green outdoor activities, regardless of region or setting. Exposure to ordinary natural settings may offer a widely effective treatment for managing ADHD symptoms.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalAmerican Journal of Public Health·DateAug 27, 2004

Better living through urban ecology

The Baltimore Ecosystem Study (BES) has revealed unexpected patterns and processes in the city's ecosystem, including how plants influence air quality and forest cover affects water quality. Renewed funding will allow researchers to investigate urban ecology discoveries and share findings with educators and decision makers.

SourceCary Institute of Ecosystem Studies·DateAug 27, 2004

Light oscillations become visible

Scientists have developed a technique to visualize the electric field of visible light, measuring its variation with unprecedented resolution. This breakthrough enables direct and accurate measurement of ultrabroad-band light pulses, opening doors to new applications in molecular electronics and X-ray lasers.

SourceMax-Planck-Gesellschaft·JournalScience·DateAug 27, 2004

Diabetics face fewer healthy food choices in some urban areas

A study by Mount Sinai School of Medicine found that East Harlem grocery stores were less likely to stock diabetes-friendly foods compared to Upper East Side stores. The research highlights the need for healthier food options in underserved communities.

SourceThe Mount Sinai Hospital / Mount Sinai School of Medicine·JournalAmerican Journal of Public Health·DateAug 27, 2004
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