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Science News for November 4, 2016


Study finds female scientists collaborate differently

A Northwestern University study found that female faculty in STEM disciplines have similar collaboration patterns to their male counterparts, but are underrepresented in large teams and international collaborations. The research highlights the need for a level playing field to address unequal opportunities and promote diversity in STEM.

SourcePLOS·JournalPLOS Biology·DateNov 4, 2016

In food packaging, color matters

Research suggests that darker tones in food packaging are associated with healthier choices, while light tones may be perceived as less tasty. The study tested consumer reactions to packaged products of varying colors, finding that health-conscious individuals were more likely to associate light colors with inferior taste.

SourceJournal of Retailing at New York University·JournalJournal of Retailing·DateNov 4, 2016

Light drives single-molecule nanoroadsters

Researchers at Rice University and the University of Graz successfully drove single-molecule nanoroadsters using light, demonstrating a new method for propulsion. The vehicles, made of 112 atoms, reached a top speed of 23 nanometers per hour and showed wavelength sensitivity.

SourceRice University·JournalACS Nano·DateNov 4, 2016

Herbivorous mammals have bigger bellies

Researchers reconstructed the body cavity volume in over 120 tetrapods and found that herbivores have twice as large bodies as carnivores of similar size. The study reveals a fundamental difference in morphological principles between mammals and other tetrapods, with possible implications for respiratory systems.

SourceUniversity of Zurich·JournalJournal of Anatomy·DateNov 4, 2016

Study challenges model of Alzheimer's disease progression

Researchers challenge the widely held belief that Alzheimer's disease originates in the temporal lobe by identifying the basal forebrain region as a critical area of degeneration. The study shows that degeneration in this region predicts subsequent spread to other brain areas, opening new avenues for detection and intervention.

SourceCornell University·JournalNature Communications·DateNov 4, 2016

Nanostructures made of pure gold

Researchers at TU Wien have successfully created nanostructures made of pure gold using an additive direct-write lithography technique. The new method allows for the fabrication of three-dimensional gold structures, which are essential for various applications in electronics and sensor technology.

SourceVienna University of Technology·JournalScientific Reports·DateNov 4, 2016

E-cig vapor does not induce genetic mutations associated with cigarette smoke exposure

In a lab-based test using the Ames assay, scientists found that e-cigarette vapour did not cause DNA mutations in bacteria, unlike tobacco smoke. The results suggest that e-cigarettes may be less harmful than cigarettes, supporting growing evidence of their potential as a safer alternative.

SourceR&D at British American Tobacco·JournalMutation Research/Genetic Toxicology and Environmental Mutagenesis·DateNov 4, 2016

On-chip observation of THz graphene plasmons

Scientists developed a technique to image THz photocurrents with nanoscale resolution, visualizing strongly compressed THz waves in a graphene photodetector. The imaging technique, called THz photocurrent nanoscopy, provides unprecedented possibilities for characterizing optoelectronic properties at THz frequencies.

SourceElhuyar Fundazioa·JournalNature Nanotechnology·DateNov 4, 2016