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Science News for May 26, 2015


Changes in forest structure affect bees and other pollinators

A new study by U.S. Forest Service scientists shows that changes in forest structure may be contributing to declines in native bee populations. Bees prefer open forests with diverse herbaceous communities, which require prescribed fire to maintain. Managing for open forests can also help sustain other species and pollination.

SourceUSDA Forest Service ‑ Southern Research Station·JournalForest Ecology and Management·DateMay 26, 2015

Therapy-resistant breast cancer mechanism revealed

A study published in Nature Communications reveals that a specific type of non-coding RNA, known as Eleanors, plays a key role in the development of endocrine therapy resistance in ER-positive breast cancer cells. Resveratrol was found to repress these RNAs, inhibiting the proliferation of resistant cancer cells.

SourceKumamoto University·JournalNature Communications·DateMay 26, 2015

Friendships start better with a smile

A study led by Belinda Campos found that people are highly attuned to others' positive emotions and can form new social bonds based on these displays. Awareness of others' positive emotions can provide important relationship information, helping individuals feel secure in their relationships and resolve conflicts.

SourceSpringer·JournalMotivation and Emotion·DateMay 26, 2015

Simple recipe to make sensory hair cells in the ear

Researchers at the Molecular Medicine Institute and University College London Ear Institute have created a protocol to produce inner ear hair cells, crucial for hearing and balance. The study's success suggests that similar strategies might work in humans, paving the way for cell transplantation therapies or high-throughput drug screens.

SourceThe Company of Biologists·JournalDevelopment·DateMay 26, 2015

Study examines umbilical cord clamping and neurodevelopment

A study examining umbilical cord clamping and neurodevelopment found that delayed cord clamping was associated with higher scores in fine-motor and social skills in children at age 4, especially in boys. The results suggest positive effects from delayed cord clamping without any adverse effects on overall IQ or behavior.

SourceJAMA Network·JournalJAMA Pediatrics·DateMay 26, 2015

What is the most humane way to kill a cane toad?

Researchers from the University of Sydney have found a humane way to kill cane toads by placing them in a refrigerator for a few hours before transferring them to a freezer. This method induces unconsciousness without causing pain, solving a long-standing dilemma for communities affected by the invasive species.

SourceUniversity of Sydney·JournalBiology Open·DateMay 26, 2015

Babies can think before they can speak

Researchers found that infants as young as 7 months old can understand the abstract relation of sameness and difference between two things. This ability is present from birth and does not require language skills. Infants exhibit similar patterns of learning as older children and adults, highlighting a fundamental human skill.

SourceNorthwestern University·JournalChild Development·DateMay 26, 2015

Measuring arm circumference is a more reliable indicator of malnutrition

Research by Adam C. Levine found that arm circumference is a more accurate predictor of under-nutrition in children with diarrhea than traditional weight-based measures. This method is particularly useful in resource-limited settings where dehydration does not significantly affect the child's weight, but can impact their overall health.

SourceLifespan·JournalJournal of Nutrition·DateMay 26, 2015

NYU researchers find 'decoder ring' powers in micro RNA

Researchers at NYU have found that microRNA can serve as a decoder ring to understand complex biological processes, highlighting the potential for miRNA to shed light on diseases such as coronary artery disease and cleft palates. By analyzing miR-200, the team identified a trio of glycans critical to cell movement and tumor metastasis.

SourceNew York University·JournalProceedings of the National Academy of Sciences·DateMay 26, 2015

One to ovoid?

A new study uses 3D printed eggs to test how birds identify and reject parasitic eggs with greater precision. Researchers found that robins accepted 100% of blue-green eggs but rejected 79% of cowbird-like eggs, similar to past studies but with less variability and precise reproduction.

SourcePeerJ·JournalPeerJ·DateMay 26, 2015

Surgical skills lab and dissection curricula train neurosurgical residents

Neurosurgeon authors establish a surgical skills laboratory and dissection curriculum for resident education, improving surgical skills and understanding of anatomical relationships. The program has been implemented at the Cleveland Clinic, providing a comprehensive training environment and enhancing future standards in surgical training.

SourceJournal of Neurosurgery Publishing Group·JournalJournal of Neurosurgery·DateMay 26, 2015

Squeezed quantum cats

Scientists have created a hybrid state of being both 'alive' and 'dead' by combining Schrödinger's cat with squeezed quantum states, enabling more stable quantum computing and precise measurement capabilities.

SourceETH Zurich·JournalNature·DateMay 26, 2015

Tiny heart, big promise

Researchers at Children's Hospital Los Angeles identified a new source of cells that can develop into coronary vessels and found the signaling protein CXCL12 guiding this process. The study may have clinical relevance, helping diagnose abnormal coronary vessels and developing interventional strategies to prevent heart attacks.

SourceChildren's Hospital Los Angeles·JournalDevelopmental Cell·DateMay 26, 2015

Seeing the action

Researchers at UCSB have developed a novel device that enables real-time observation of the forces involved in cell membrane hemifusion. By combining the Surface Forces Apparatus and fluorescence microscopy, they were able to visualize the rearrangement of lipid domains during this process.

SourceUniversity of California - Santa Barbara·JournalNature Communications·DateMay 26, 2015

From worker to queen at the drop of a gene

Biologists from the University of Leicester have discovered that buff-tailed bumblebees develop into queens or workers based on gene expression. The study found that differentiation is not caused by inherited genetic differences, but rather by distinct expression patterns in adults.

SourceUniversity of Leicester·JournalMolecular Ecology·DateMay 26, 2015

Penn study links better 'good cholesterol' function with lower risk of later heart disease

A large prospective study found that individuals with higher HDL function have a lower risk of developing coronary heart disease. Researchers from the University of Pennsylvania analyzed data from over 25,000 participants and discovered a strong correlation between HDL function and reduced heart disease events.

SourceUniversity of Pennsylvania School of Medicine·JournalThe Lancet Diabetes & Endocrinology·DateMay 26, 2015

Severe ozone depletion avoided

A new study confirms the Montreal Protocol has effectively protected the ozone layer from severe depletion, with atmospheric concentrations of harmful substances declining since their peak in 1993. The researchers used a state-of-the-art model to investigate the impact of the treaty and found that without it, the Arctic ozone hole woul...

SourceUniversity of Leeds·JournalNature Communications·DateMay 26, 2015

Supernovas help 'clean' galaxies

Recent research found that supernovas work hand-in-hand with supermassive black holes to sweep out gas, interrupting star formation in galaxies. The partnership of these celestial events may help understand why massive galaxies stopped forming stars billions of years ago.

SourceMichigan State University·JournalThe Astrophysical Journal Letters·DateMay 26, 2015

ER doctors stress need for good communications with police

ER physicians emphasize the importance of developing strategies to optimize communications between police and ED workers due to differing perspectives on patient privacy and investigation needs. They suggest attempting to obtain patient consent before disclosing information and using limited disclosure when necessary.

SourceSt. Michael's Hospital·JournalCanadian Journal of Emergency Medicine·DateMay 26, 2015