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Science News Archive May 2007 - Page 11


Page 11 of 20

Do fruit flies have free will?

A team of researchers analyzed fruit fly behavior and found it to be non-randomly generated by the brain, suggesting a mechanism for free will in animals. This discovery could lead to the development of robots with spontaneous behavior and help combat human disorders related to compromised spontaneity.

SourcePLOS·JournalPLOS ONE·DateMay 15, 2007

Spud origin controversy solved

Scientists have long debated the birthplace of the European potato. New genetic information reveals that remnants of early potatoes are of Andean and Chilean origin, with possible hybrids. This finding challenges previous assumptions and has implications for breeding programs.

SourceAmerican Society of Agronomy·JournalCrop Science·DateMay 15, 2007

Simple equations track Listeria trails

Biologists used simple equations to describe the motion of Listeria monocytogenes, reproducing all observed shapes with just two variables. The equations can help identify bacterial mutants and rule out mechanisms driving the motion.

SourceBrown University·JournalProceedings of the National Academy of Sciences·DateMay 15, 2007

The 'driving' force behind electric vehicles

A comparative study of US and French policies on electric vehicles reveals the impact of cultural differences on technological innovation. The study shows that despite similar goals, different approaches led to varying outcomes, with the US adopting hybrid cars as an alternative solution.

SourceSpringer·JournalPolicy Sciences·DateMay 14, 2007

Rx for heart failure: patient-centered care from a pharmacist

A study of 314 low-income Indiana residents with heart failure found that pharmacist-led patient-centered care resulted in patients taking their medications 16% more consistently. This approach also reduced emergency room visits and hospitalizations by 19%, saving the healthcare system $14 in costs for every dollar spent.

SourceIndiana University·JournalAnnals of Internal Medicine·DateMay 14, 2007

Older patients with major depression live longer with appropriate treatment, Penn study shows

A Penn study found that older adults with major depression who receive coordinated care with primary physicians and depression care managers have a 45% lower risk of dying within five years compared to those receiving standard care. The study suggests that engaging primary care practices in mental health services is crucial for improvi...

SourceUniversity of Pennsylvania School of Medicine·JournalAnnals of Internal Medicine·DateMay 14, 2007

Spreading viruses as we breathe

A study by Queensland University of Technology found that droplets carrying viruses can travel large distances in the air, posing a risk to people breathing nearby. The research dispels the myth that viruses only travel a short distance from a person, suggesting that one infected individual can spread the virus simply by exhaling.

Marine reserves could save coral reefs

A study published in Proceedings of the National Academy of Sciences found that marine reserves can double the number of young corals, leading to a healthier reef ecosystem. The Bahamas' Exuma Cays Land and Sea Park was used as a testing ground for this innovative approach.

SourceUniversity of Exeter·JournalProceedings of the National Academy of Sciences·DateMay 14, 2007

Log-on to shape-up

A study by The Miriam Hospital found that web-based intervention programs for inactive adults were just as effective as traditional programs in increasing physical activity. Participants reported approximately 120 minutes of physical activity per week, with a 5.2% improvement in fitness over six months.

SourceLifespan·JournalArchives of Internal Medicine·DateMay 14, 2007

Female-led infanticide in wild chimpanzees

Researchers report instances of three female-led infanticidal attacks in wild chimpanzee community, challenging the notion that infanticide is a male-dominated behavior. The findings suggest that deadly aggression may be part of the female behavior repertoire, possibly driven by demographic shifts and increased competition for resources.

SourceCell Press·JournalCurrent Biology·DateMay 14, 2007

Cluster makes a shocking discovery

Scientists observed large fluctuations in magnetic and electric field readings around each spacecraft, revealing variations in solar wind protons reflected by the shock. This discovery provides valuable insights into bow shocks around distant celestial objects, which can accelerate particles to extreme energies.

SourceEuropean Space Agency·JournalGeophysical Research Letters·DateMay 14, 2007