Add BrightSurf on Google Email

Science News Archive May 2014 - Page 27


Page 27 of 31

College kids need to change unhealthy ways

A new study found that college students are engaging in unhealthy behaviors, including low fruit and vegetable consumption and physical inactivity, which could increase their risk of cancer later on. Racial minority students, particularly African Americans and Native Americans, were at a higher risk.

SourceNorthwestern University·JournalPreventive Medicine·DateMay 6, 2014

AGU journal highlights -- May 6, 2014

Scientists studied the persistence of a hexagon-shaped atmospheric phenomenon on Saturn, which remains constant despite large radiative forcing in its atmosphere. The findings suggest that the hexagon is deeply rooted within Saturn's atmosphere and could reveal the planet's internal rotational period.

SourceAmerican Geophysical Union·JournalGeophysical Research Letters·DateMay 6, 2014

Genetic, environmental influences equally important risk for autism spectrum disorder

A large family study found that genetic relatedness in families increases the risk of autism spectrum disorder, while unique environmental factors also play a significant role. The study used a population-based sample of over two million Swedish children and revealed a strong link between genetic and environmental influences.

Strong institutions reduce in-group favoritism

A forthcoming study suggests that strong social and political institutions can reduce favoritism towards one's own group, making people more likely to follow impartial rules. Ineffective institutions, on the other hand, lead to favoritism towards local communities.

SourceCIFAR·JournalHuman Nature·DateMay 5, 2014

History to blame for slow crop taming: Study

Researchers found that crop domestication took much longer than expected, with cultural and historical factors playing a key role. Domesticated crops like corn showed traits such as seed resistance and shortened flowering times, but their adaptation was slower than genetic changes.

SourceUniversity of Guelph·JournalProceedings of the National Academy of Sciences·DateMay 5, 2014

Focused ultrasound reduces cancer pain

A phase III clinical trial shows that non-invasive magnetic resonance guided focused ultrasound treatment relieves pain and improves function for most patients with bone metastases. Patients responded well to treatment, with 64 percent experiencing either no pain or a significant reduction in their pain within several days of treatment.

SourceThomas Jefferson University·JournalJNCI Journal of the National Cancer Institute·DateMay 5, 2014

How does stress increase your risk for stroke and heart attack?

Researchers investigated the neural circuitry behind stress and heart disease, finding that negative emotions increase pro-inflammatory chemicals in the body. Individuals who struggled to regulate their emotions showed elevated blood levels of inflammatory cytokines and atherosclerosis markers.

SourceElsevier·JournalBiological Psychiatry·DateMay 5, 2014

Getting to the root of enamel evolution

A new study published in the Journal of Human Evolution identifies two genes that show evidence of positive selection in humans, contributing to the thickening of enamel. The research suggests that natural selection played a key role in shaping human teeth, with specific genetic changes linked to diet and environmental pressures.

SourceDuke University·JournalJournal of Human Evolution·DateMay 5, 2014

Where DNA's copy machine pauses, cancer could be next

Researchers at Duke University mapped fragile sites across the entire yeast genome, finding they occur in areas where DNA replication slows or stalls. These sites are linked to genetic abnormalities seen in solid tumors and can lead to chromosome instability.

SourceDuke University·JournalProceedings of the National Academy of Sciences·DateMay 5, 2014

What fuels Salmonella's invasion strategy?

Research discovered that glucose is the major nutrient used by Salmonella bacteria, but it's also able to use other nutrients. This finding informs potential therapeutic interventions to combat Salmonella infections. The study reveals a wealth of strategies employed by Salmonella to overcome host defenses and evade immune systems.

SourceNorwich BioScience Institutes·JournalPLOS ONE·DateMay 5, 2014

A journey between XX and XY

Researchers at UNIGE identified a mutation in the HHAT gene, which plays a key role in embryonic development and affects sexual development, growth, and skeletal development. The study provides new insights into Hedgehog signaling and has implications for genetic testing and treatment of patients with disorders of sex development.

SourceUniversité de Genève·JournalPLOS Genetics·DateMay 5, 2014

Annals of Internal Medicine tip sheet for May 6, 2014

A study published in Annals of Internal Medicine found that Massachusetts' comprehensive health care reform led to a significant decline in deaths, particularly among nonelderly residents. The researchers estimated that the reform prevented 320 deaths per year and saved one life for every 830 persons gaining insurance. Additionally, th...

SourceAmerican College of Physicians·JournalAnnals of Internal Medicine·DateMay 5, 2014

New knowledge about muscular dystrophy

Researchers at Aarhus University discovered that enzyme DDX6 regulates toxic RNA aggregates in muscular dystrophy patients. The study found that increasing DDX6 levels reduces RNA aggregates, while decreasing them leads to more aggregates.

SourceAarhus University·JournalNucleic Acids Research·DateMay 5, 2014

Spotting a famous face in the crowd

A study by Volker Thoma found that humans can only process a few faces at a time, whether they are familiar or not. This limits our ability to recognize faces in crowded spaces. The study used famous faces like Bill Clinton and Mick Jagger to test this theory.

SourceSpringer·JournalPsychonomic Bulletin & Review·DateMay 5, 2014

Is self-fumigation for the birds?

Researchers discovered that finches in the Galapagos Islands use treated cotton to kill parasitic fly maggots, protecting baby birds and potentially helping endangered species. The biologists tested this self-fumigation method on Darwin's finches, showing that it is effective against the nest fly Philornis downsi.

SourceUniversity of Utah·JournalCurrent Biology·DateMay 5, 2014

Genetic approach helps design broadband metamaterial

Researchers at Penn State have developed a new metamaterial with high absorption over broad bandwidth, providing better protection against electromagnetic radiation. The material is designed using genetic algorithms and can be easily manufactured due to its simple layer structure.

SourcePenn State·JournalACS Nano·DateMay 5, 2014