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Science News Archive February 2015 - Page 13


Page 13 of 31

A close call of 0.8 light years

Researchers analyzed the trajectory of Scholz's star and found it passed through the outer Oort Cloud, 98% certain of its close flyby. The star's proximity to our solar system was confirmed, challenging previous predictions for the closest known flyby.

SourceUniversity of Rochester·JournalThe Astrophysical Journal Letters·DateFeb 17, 2015

Nicotine metabolite amplifies action of the primary chemical messenger for learning and memory

A new study suggests that nicotine's metabolite cotinine amplifies the effect of acetylcholine, a primary chemical messenger involved in learning and memory, potentially providing therapeutic benefits for Alzheimer's and other memory disorders. Cotinine may also have synergistic effects with existing Alzheimer's therapies.

SourceMedical College of Georgia at Augusta University·JournalJournal of Pharmacology and Experimental Therapeutics·DateFeb 17, 2015

Laser 'ruler' holds promise for hunting exoplanets

Researchers successfully demonstrate a new technique combining a solar telescope with a laser frequency comb to analyze distant stars with unprecedented accuracy, potentially leading to the discovery of Earth-like planets. The technique enhances spectral analysis and advances research in astrophysics.

SourceIOP Publishing·JournalNew Journal of Physics·DateFeb 17, 2015

Crowdsourcing a valid option for gathering speech ratings

A study by New York University's Steinhardt School of Culture, Education, and Human Development found that crowdsourcing using Amazon Mechanical Turk can produce high levels of agreement among listeners, even when individual responses are not highly accurate. With samples of nine or more AMT users, performance converges with that of ex...

SourceNew York University·JournalJournal of Communication Disorders·DateFeb 17, 2015

When it comes to an opening number, sometimes the best bargaining move is to offer two

A new study from Columbia Business School suggests that using range offers in negotiations can lead to better settlements for the offer-maker without harming their relationship with the other party. Bolstering and bracketing range offers were found to be effective strategies, while backdown range offers were less successful.

SourceColumbia Business School·JournalJournal of Personality and Social Psychology·DateFeb 17, 2015

Mapping seascapes in the deep ocean

Researchers from University of Southampton develop new automated method for classifying hundreds of miles of the deep sea floor, creating broad-scale maps to estimate biodiversity hotspots. The maps cover approximately 125 miles across, using information on topography and sediment type to identify distinct 'geomorphological terrains'.

SourceUniversity of Southampton·JournalMarine Biology·DateFeb 17, 2015

Teen brain scans reveal a key to weight loss

Researchers found that teenagers who relied on executive function processes, particularly in the pre-frontal cortex, were more successful in losing weight. Successful programs involve repeated practice and ramping up challenges to executive control, such as computerized training and aerobic physical activity.

SourceBrigham Young University·JournalObesity·DateFeb 17, 2015

Scientists use MRI to visualize pancreas inflammation in type 1 diabetes

Researchers have developed a novel imaging technique using ferumoxytol and MRI to visualize pancreatic inflammation in patients with newly diagnosed type 1 diabetes. The study found clear evidence of ongoing inflammation in the pancreas, which could help predict disease progression and identify potential therapeutic targets.

SourceJoslin Diabetes Center·JournalProceedings of the National Academy of Sciences·DateFeb 17, 2015

Technology changing teacher's role

A recent Finnish-Swiss-Belgian study finds that technology changes the teacher's role from a traditional knowledge provider into a facilitator guiding students' learning processes and engaging in joint problem-solving. Technology offers new types of learning possibilities, including interactive learning and teaching opportunities.

Even animals compose

Researchers from the University of Vienna found cross-species parallels in song production and perception among animals. Some species, such as songbirds and parrots, can learn to produce new sounds and even identify beats, similar to human music abilities.

SourceUniversity of Vienna·JournalPhilosophical Transactions of the Royal Society of London·DateFeb 17, 2015