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Science News Archive October 2012 - Page 28


Page 28 of 33

Hi-fi single photons

A French team identified key parameters to generate high-fidelity single photons, crucial for quantum computing and communication. They simulated detector properties and experimental results to improve reliability.

SourceSpringer·JournalThe European Physical Journal D·DateOct 4, 2012

MU researcher identifies factors to help parents and professionals recognize teens in distress

A University of Missouri public health expert has identified factors that can help parents, medical professionals, and educators recognize teens at risk for self-injury and suicide. Factors such as parent connectedness and connections with other positive adult influences are associated with reduced likelihood of engaging in self-injury.

SourceUniversity of Missouri-Columbia·JournalAcademic Pediatrics·DateOct 4, 2012

Abortion rates plummet with free birth control

A new study found that providing free birth control reduced unplanned pregnancies and cut abortion rates by 62-78%. Most women chose long-acting methods like IUDs or implants, which have lower failure rates than commonly used birth control pills. The study enrolled 9,256 women and adolescents in the St. Louis area between 2007 and 2011.

SourceWashington University in St. Louis·JournalObstetrics and Gynecology·DateOct 4, 2012

Chewing ability linked to reduced dementia risk

Research from Karolinska Institutet found a significant association between difficulty chewing hard food and cognitive impairment, including dementia. The study of 557 people aged 77 or older suggests that maintaining good chewing ability may be crucial for brain health.

SourceKarolinska Institutet·JournalJournal of the American Geriatrics Society·DateOct 4, 2012

Researchers find ancient carbon resurfacing in lakes

A new study reveals that a significant amount of carbon released into lakes and rivers is very old, approximately 1,000 to 3,000 years old. This finding challenges the current models of long-term carbon storage in lakes and rivers, suggesting a significant lag in the coupling between terrestrial and aquatic environments.

SourceVirginia Commonwealth University·JournalProceedings of the National Academy of Sciences·DateOct 4, 2012

Dating encounters between modern humans and Neandertals

Researchers estimate that modern humans and Neandertals interbred around 37,000 to 86,000 years ago, with the most recent encounters occurring well after modern humans migrated outside of Africa. This suggests that Neandertals had children with the ancestors of present-day people outside of Africa.

SourcePLOS·JournalPLOS Genetics·DateOct 4, 2012

Everyday evolution

A study from the University of Toronto Mississauga discovered that insect interaction can cause rapid evolutionary changes in plants, with populations diverging significantly in as few as three to four generations. This suggests that insects play a crucial role in plant evolution and diversity.

SourceUniversity of Toronto·JournalScience·DateOct 4, 2012

Newborn mice depend on mom's signature scent

Researchers found that newborn mice depend on the specific blend of scents emitted by their mothers, which is distinct from earlier studies in rabbits. This discovery suggests that innate behaviors like suckling may involve learning rather than hardwired instincts.

SourceCell Press·JournalCurrent Biology·DateOct 4, 2012

Northern conifers youngest of the species

A Yale University study found that most Northern conifer species emerged within the past 5 million years, with mountainous environments driving the formation of new species. The researchers also discovered significant differences in conifer evolutionary dynamics between the Southern and Northern Hemispheres.

SourceYale University·JournalProceedings of the National Academy of Sciences·DateOct 4, 2012

Babies learn the smell of mum

Researchers show that newborn mice learn to suckle their mother's milk through a learned response built on learning her unique combination of smells. The study, published in Current Biology, finds that a pheromone is not involved in initiating suckling in mice.

SourceWellcome Trust Sanger Institute·JournalCurrent Biology·DateOct 4, 2012

Study shows benefits, drawbacks, for women's incontinence treatments

A new study comparing oral medication and Botox injections for treating urge urinary incontinence in women found that both treatments were effective in reducing symptoms, but with varying side effects. The study, which involved nearly 250 women, showed that Botox was more likely to completely eliminate urinary leakage, while oral medic...

Memory and thought-process training show promise in managing breast cancer symptoms

Researchers found that a memory training program improved memory performance, while a computer-based program called Insight improved both memory and information processing speed. The study suggests these programs may help alleviate symptoms such as depression, anxiety, and fatigue in breast cancer survivors.

SourceIndiana University School of Medicine·JournalBreast Cancer Research and Treatment·DateOct 3, 2012