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Science News Archive 2021 - Page 405


Page 405 of 510

Firefly tourism takes flight, sparking wonder and concern

A comprehensive review reveals the benefits of firefly tourism, including economic and social gains, but also highlights threats to local firefly populations. The authors urge site managers, tour guides, and tourists to adopt tailored conservation practices and promote eco-friendly behavior to protect these charismatic creatures.

SourceTufts University·JournalConservation Science and Practice·DateMar 11, 2021

50 new genes for eye colour

A large-scale genetic study has identified 50 new genes associated with human eye color, significantly expanding the current understanding of this complex trait. These findings will help improve diagnosis and treatment of eye diseases such as pigmentary glaucoma and ocular albinism.

SourceKing's College London·JournalScience Advances·DateMar 11, 2021

Researchers set new resolution record for imaging the human eye

A new imaging method has been developed that can capture high-resolution images of photoreceptors in the human eye, overcoming resolution limitations imposed by light diffraction. The technique uses annular pupil illumination and sub-Airy detection to enhance microscopy techniques for earlier detection and treatment of eye diseases.

SourceOptica·JournalOptica·DateMar 11, 2021

With masks on, three feet is just as safe as six feet apart in Massachusetts schools

A statewide study in Massachusetts public schools found no significant difference in COVID-19 case rates between districts with 3-foot versus 6-foot physical distancing policies with universal mask mandates. The study suggests that lower physical distancing policies can be adopted without negatively impacting student or staff safety.

SourceBeth Israel Deaconess Medical Center·JournalClinical Infectious Diseases·DateMar 11, 2021

Standard vital signs could help estimate people's pain levels

A new study shows that machine-learning strategies can be applied to routinely collected physiological data to provide clues about pain levels in people with sickle cell disease. The researchers found that these vital signs give clues into the patients' reported pain levels, outperforming baseline models.

SourcePLOS·JournalPLOS Computational Biology·DateMar 11, 2021

How to make all headphones intelligent

Researchers develop HeadFi, a plug-in headphone adapter that transforms regular headphones into sensors for user identification, heart rate monitoring and gesture recognition. The invention shows promise in upgrading existing headphones without requiring new hardware or customization.

Scientists discover cellular stress enzyme that might play key role in neurodegenerative diseases such as ALS

Researchers at Johns Hopkins Bloomberg School of Public Health have discovered a cellular stress enzyme called MARK2 that controls protein synthesis in response to types of stress or damage seen in neurodegenerative disorders. The finding suggests that MARK2 may play a key role in diseases such as Alzheimer's, Parkinson's, and ALS.

Hyperpolarized proton MRI used to observe metabolic processes in real time

A new hyperpolarized proton MRI method has been developed by researchers at Johannes Gutenberg University Mainz and the Helmholtz Institute Mainz. This technique uses parahydrogen to track biochemical processes in real-time, enabling the observation of metabolic processes without the drawbacks of existing hydrogen-based imaging methods.

SourceJohannes Gutenberg Universitaet Mainz·JournalAngewandte Chemie International Edition·DateMar 11, 2021

Fossilized feeding frenzy

A 47-million-year-old fly fossil found in Vienna revealed that flies played a significant role in ancient pollination. The fly's stomach contents showed pollen from various plant species, suggesting its importance in pollen dispersal and biotic interactions.

SourceUniversity of Vienna·JournalCurrent Biology·DateMar 11, 2021

Female snowy plovers are no bad mothers

In snowy plover species, females often abandon their broods to mate with new partners, a behavior that may be beneficial for parental reproductive success. The study found that females desert their broods primarily due to poor environmental conditions or when chicks have a good chance of survival without them.

SourceMax-Planck-Gesellschaft·JournalBehavioral Ecology·DateMar 11, 2021

Fatal police violence nearby increases risk of preterm birth

A new study by researchers at UCSF found that fatal police violence near a pregnant woman's home increases the risk of preterm birth. The study analyzed records of 3.8 million pregnant women and found that deaths due to police violence, particularly among Black victims, were strongly associated with moderate or late preterm delivery.

SourceUniversity of California - San Francisco·JournalPaediatric and Perinatal Epidemiology·DateMar 11, 2021

Pain hides in our data

Researchers developed an AI algorithm to mine physiological data from patients with chronic pain, detecting changes in pain levels and atypical fluctuations. The study aims to provide a more precise treatment method by supplementing subjective pain assessments with objective data-driven approaches.

SourceNorthwestern University·JournalPLOS Computational Biology·DateMar 11, 2021

Modulation of photocarrier relaxation dynamics in two-dimensional semiconductors

The review article discusses modulation strategies for 2D semiconductors, including Coulomb interaction modification and influencing factors like initial photocarrier distribution and phonon-assisted relaxation. Researchers aim to provide guidance for developing robust methods tuning photocarrier relaxation behaviors.

Mapping the best places to plant trees

The Reforestation Hub is an interactive map that color-codes individual counties by reforestation opportunity, revealing a great deal of potential for restoration across the US. The tool identifies trends and quantifies land suitability for forest cover, providing valuable insights for foresters and policymakers.

SourceCell Press·JournalOne Earth·DateMar 11, 2021

Contactless high performance power transmission

A team of physicists at TUM has developed a coil with superconducting wires capable of transmitting power in the order of more than five kilowatts without significant loss. The researchers optimized the distance between individual windings to achieve a higher power density, paving the way for exciting application areas such as industri...

SourceTechnical University of Munich (TUM)·JournalIEEE Transactions on Applied Superconductivity·DateMar 11, 2021