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Science News Archive February 2017 - Page 14


Page 14 of 37

Switched-on DNA

An ASU-led team has developed the first controllable DNA switch, allowing for reversible control of electricity flow within a single molecule. The modified DNA helix can conduct electricity and is reversibly controlled using an anthraquinone group.

SourceArizona State University·JournalNature Communications·DateFeb 20, 2017

Bringing evidence to health screening debates

Constantine Gatsonis, a leading researcher on cancer screening studies, emphasizes the importance of rigorously produced evidence in health screenings. His work has shed light on the accuracy, cost-effectiveness, and impact of various screening methods, including digital mammography and tomosynthesis.

Mapping a path to better oral health

Researcher Brenda Heaton found that social networks play an overlooked role in oral health care, influencing behavior and disease prevention. She aims to use network maps to introduce health resources into communities, changing long-term behaviors and preventing tooth decay through prevention.

Bee decline threatens US crop production

The study reveals wild bees are disappearing in US farmlands, including California, the Midwest and Mississippi Valley, threatening crop production. The 'trouble zone' counties face a potential mismatch between rising demand for pollination and falling supply of wild bees, highlighting the need for habitat restoration efforts.

Save the bees? There's an app for that

A new mobile app developed by University of Vermont researchers aims to help farmers protect endangered bees by calculating crop productivity and pollination benefits. The app allows users to explore land management scenarios and virtually test how bee-friendly decisions would improve their business.

GA4GH at AAAS 2017

At AAAS 2017, the Global Alliance for Genomics and Health (GA4GH) explores local governance solutions for global data sharing. The session discusses policies to promote data sharing, including frameworks such as the Regulatory and Ethics Working Group's Framework for Responsible Sharing of Genomic and Health-Related Data.

Scholar to talk about role of science in law

Shari Diamond, a renowned expert on jury process and legal decision-making, will discuss the importance of involving scientists in the legal system. Her presentation highlights insights from an American Academy of Arts and Sciences study that examines the barriers to effective engagement between science and law.

Reboot Gitmo for science

Scientists seek to convert the notorious U.S. military prison at Guantanamo Bay into a leading marine research facility and peaceful sanctuary for threatened Cuban species. A 'green' Gitmo proposal, proposed by University of Vermont biologist Joe Roman, offers a potential solution to the long-standing impasse in U.S.-Cuba relations.

Is the human brain hardwired to appreciate poetry?

Researchers found that participants' brains responded positively to sentences conforming to traditional Welsh poetry rules, even when they couldn't explicitly identify the correct form. This suggests an innate appreciation for poetic structure in the human brain.

SourceFrontiers·JournalFrontiers in Psychology·DateFeb 17, 2017

Who benefits from praise?

A study published by University of Konstanz researchers found that praise from peers can motivate students to perform better, particularly those who are already high-achievers. However, this positive effect is limited for students whose grades fall just below the top threshold.

SourceUniversity of Konstanz·JournalJournal of Behavioral and Experimental Economics·DateFeb 17, 2017

Climate-driven permafrost thaw

Research reveals large-scale thaw-induced slope disturbances and mobilization of primary glacial sediments, leading to cascading effects on fluvial, lacustrine, and coastal systems. The study's findings have major implications for predicting northern landscape change and downstream impacts.

SourceGeological Society of America·JournalGeology·DateFeb 17, 2017

Designing new materials from 'small' data

A Northwestern University and Los Alamos National Laboratory team developed a novel workflow to design new materials with useful electronic properties. By combining machine learning and density functional theory calculations, they created design guidelines for ferroelectricity and piezoelectricity.

SourceNorthwestern University·JournalNature Communications·DateFeb 17, 2017

New life for 19th-century plants

Brown University researchers demonstrate the efficacy of using herbaceous plant specimens from the late 19th century to track changes in heavy metal concentrations over time. Despite challenges, including mercury contamination, they show significant reductions in lead concentrations and highlight broader trends in heavy metal accumulat...

SourceBotanical Society of America·JournalApplications in Plant Sciences·DateFeb 17, 2017

Wearing your brain on your sleeve

Rhoda Au's e-cognitive health initiative collects data from over 2,200 participants using wearable devices, smartphone apps, and in-home devices to detect subtle changes in daily behavior that may indicate cognitive decline. The goal is to identify early signs of Alzheimer's and dementia, improving diagnosis and treatment options.

System automatically detects cracks in nuclear power plants

A new automated system, called CRAQ, detects cracks in the steel components of nuclear power plants using an advanced algorithm and machine learning technique. The system outperformed two others under development, providing more robust results by processing multiple video frames and filtering out falsely detected cracks.

SourcePurdue University·JournalComputer-Aided Civil and Infrastructure Engineering·DateFeb 17, 2017

It's more than just climate change

A new study on environmental modeling reveals that climate change is only one of many inter-related threats to natural systems supporting human societies. The research argues that incorporating inequality, consumption, and population into climate models would provide a more realistic guide for policymaking and sustainable development.

SourceUniversity of Maryland·JournalNational Science Review·DateFeb 17, 2017