A short delay in school start time appears to be associated with significant improvements in adolescent alertness, mood and health, according to a report in the July issue of Archives of Pediatrics & Adolescent Medicine, one of the JAMA/Archives journals.
Culture
Children saw fewer television advertisements for certain foods, including those for sweets and beverages, in 2007 compared with 2003, according to a report posted online today that will appear in the September print issue of Archives of Pediatrics & Adolescent Medicine, one of the JAMA/Archives journals. However, children now see more fast-food ads, and racial gaps in exposure to all food advertising have increased.
COLLEGE PARK, Md. – Prison-based programs to de-radicalize terrorists show promise, if well-run, says a new joint report from U.S. and British researchers. Their initial findings – the most comprehensive to date, based on programs in 15 nations – were presented at a conference this week.
BUFFALO, N.Y. -- Researchers at the University at Buffalo conducting a neighborhood-scaled exploratory study that tested the association between the food environment, the built environment and women's body mass index (BMI) have found that women with homes closer to a supermarket, relative to a convenience store, had lower BMIs, and that the greater the number of restaurants within a five minute walk of a woman's home, the higher her BMI.
Pear psylla is a cicada-like pest with a vexing tendency to develop resistance to insecticides. But now, a new weapon could be in the works.
Agricultural Research Service (ARS) and University of California-Riverside (UCR) scientists have jointly identified a key component of the female psylla's chemical sex attractant, or pheromone, which could set the stage for luring amorous males to their doom.
Although women have a longer life expectancy, they experience a much greater prevalence of disability in old age than men do. This is the main conclusion of the study published in the latest issue of the Journal of Women's Health.
The extinction of woolly mammoths and other large mammals more than 10,000 years ago may be explained by the same type of cascade of ecosystem disruption - they mean you and me - that is being implicated today in the global decline of predators such as wolves, cougars and sharks, life scientists report July 1 in BioScience.
Then, as now, the cascading events were originally begun by human disruption of ecosystems, a new study concludes, but around 15,000 years ago the problem was not the loss of a key predator, but the addition of one — human hunters with spears.
Researchers from Boston University School of Medicine (BUSM) have identified two molecules that when activated by drugs, can inhibit a number of specific aspects of HIV transmission. These findings, published July 1 in the open-access journal PLoS Pathogens, may lead to therapies that target mucosal HIV transmission.
Just about everyone agrees that sustainability – cutting energy use, reducing carbon emissions and, in general, keeping the Earth green – is a good thing. But why do we think that? Do we support sustainability for the right reasons?
These are among the questions that Michigan State University's Michael Nelson addresses in a paper published this month in the journal Bioscience titled "Sustainability: Virtuous or Vulgar?"
Washington, DC—A new research symposium investigates the interrelationships between terrorism and governmental respect for human rights, regarding both how political authorities respond to terrorist violence and how human rights abuses can predict subsequent terrorist attacks. Responding to a lack of systematic evidence and granular data on the linkages between these two areas, the symposium addresses issues both domestic and international, ranging from public opinion on torture to the Guantanamo detention facility, sexual abuse in Israeli prisons, and the American profile abroad.
While 20/20 vision is a symbol of visual acuity, between now and the year 2020, more and more people will experience some extent of vision loss due to age-related macular degeneration (AMD) and other sight-robbing diseases.
STANFORD, Calif. — Leading stem cell researchers from institutions around the world are issuing warnings about unproven stem cell therapies being marketed on the Internet and have launched a website to educate and protect patients seeking such treatments. Often conducted outside of the United States, most of these therapies have little or no benefit — and can be dangerous as well as costly.
3,200-year-old bronze tablet is part of a linchpin that held the wheel of a battle chariot in place.
SAN FRANCISCO, CA– Although it is already one of medicine's most successful transplant procedures, doctors continue to seek ways to improve corneal transplants. Now, for the first time, a team of German and British researchers have confirmed that failure and rejection of transplanted corneas are more likely in patients whose eyes exhibit abnormal vessel growth, called corneal neovascularization, prior to surgery. The meta-analysis report appears in July Ophthalmology, the journal of the American Academy of Ophthalmology.