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Science News Archive February 2017 - Page 31


Page 31 of 37

Older than the moon

Scientists have discovered a primordial soup in the Earth's mantle older than the moon, containing helium-3, a vestige of the Big Bang. Only the hottest and most buoyant mantle plumes draw from this reservoir, suggesting it may be preserved due to its density.

Study shows planet's atmospheric oxygen rose through glaciers

A new study has determined that the first Paleoproterozoic global glaciation and significant step change in atmospheric oxygenation occurred between 2,460 and 2,426 million years ago. The rise of atmospheric oxygen was characterized by significant oscillations before irreversible oxygenation of the atmosphere 2,250 million years ago.

SourceUniversity of Wyoming·JournalProceedings of the National Academy of Sciences·DateFeb 6, 2017

Psychotherapy normalizes the brain in social phobia

A new study reveals that successful treatment of social anxiety disorder alters key brain structures involved in processing and regulating emotions. Cognitive behavioral therapy, a central therapy for social anxiety disorder, has been shown to restore balance between cortical and subcortical brain areas.

SourceUniversity of Zurich·JournalMolecular Psychiatry·DateFeb 6, 2017

Stanford scientists develop 'lab on a chip' that costs 1 cent to make

Researchers at Stanford University School of Medicine have developed a cheap and reusable diagnostic 'lab on a chip' with the help of an ordinary inkjet printer. The technology has the potential to enhance diagnostic capabilities around the world, especially in developing countries where access to early diagnostics is limited.

SourceStanford Medicine·JournalProceedings of the National Academy of Sciences·DateFeb 6, 2017

Scientists confirm dorado catfish as all-time distance champion of freshwater migrations

Researchers mapped the long-distance movements of four goliath catfish species and found that adult dorado catfish take up to 1-2 years to reach their spawning grounds in or near the Andes. The study reveals the incredible life histories of these fish, which migrate thousands of kilometers in both directions to complete their life cycle.

SourceWildlife Conservation Society·JournalScientific Reports·DateFeb 6, 2017

New study compares the effects of direct exposure to cigarette smoke or e-cigarette vapor

Researchers compared the effects of direct exposure to cigarette smoke or e-cigarette vapor on reconstituted lung tissue, finding changes in gene expression levels and increased inflammation. The study utilized a 3D airway culture system and next-generation sequencing technologies to evaluate the biological effects.

SourceMary Ann Liebert, Inc./Genetic Engineering News·JournalApplied In Vitro Toxicology·DateFeb 6, 2017

Low-cost imaging system detects natural gas leaks in real time

Researchers have developed a low-cost, real-time imaging system that can detect methane gas leaks in pipelines and oil and gas facilities. The system uses active hyperspectral imaging technology and a single-pixel camera to acquire videos of gas leaking at a rate of 0.2 liters per minute.

SourceOptica·JournalOptics Express·DateFeb 6, 2017

E-cigarettes safer than smoking says long-term study

A recent study has found that e-cigarette users have significantly lower levels of toxic chemicals and carcinogens in their body compared to smokers. The study also suggests that quitting smoking altogether is the best way to minimize exposure to toxins, rather than using e-cigarettes alongside traditional cigarettes.

SourceCancer Research UK·JournalAnnals of Internal Medicine·DateFeb 6, 2017

Radiotargeted therapy with SST2 antagonists could combat multiple human cancers

Researchers have found that somatostatin receptor sst2 antagonist tracers can target a greater number of sst2 sites in non-NET tumors than agonists. The study shows high binding of the antagonist in 12 breast cancers, all renal cell carcinomas, and 5 medullary thyroid cancers, while agonist binding was low or absent in these cases.

SourceSociety of Nuclear Medicine and Molecular Imaging·JournalJournal of Nuclear Medicine·DateFeb 6, 2017

Federal law increases use of services for autism without raising out-of-pocket costs

A federal law aimed at ensuring equal insurance benefits for physical and mental health care has led to modest increases in healthcare utilization among children with autism spectrum disorder. Despite these gains, researchers highlight the need for stronger enforcement of the parity law to ensure adequate access to services.

LED lighting could have major impact on wildlife

New research suggests that LED street lighting can have a major impact on wildlife, but that adjusting the lighting schedule and dimming it by 50% can reduce its effects. The study found that changing the way we light at night could have profound consequences for species such as predatory spiders and beetles.

SourceUniversity of Exeter·JournalGlobal Change Biology·DateFeb 6, 2017

Pride -- sin or incentive?

A study by UC Santa Barbara researchers suggests that humans accurately predict the qualities valued in their local population and generate pride based on those values. The 'advertisement-recalibration theory of pride' proposes that pride serves as a motivator to cultivate traits and behaviors that increase others' valuation.

SourceUniversity of California - Santa Barbara·JournalProceedings of the National Academy of Sciences·DateFeb 6, 2017

Hard shell -- healthy kernel

Researchers from the University of Jena investigate the effects of five types of nuts on colon cancer cells, finding that they activate the body's defences to detoxify reactive oxygen species. Nuts stimulate the activity of protective enzymes catalase and superoxide dismutase, inducing programmed cell death in cancer cells.

SourceFriedrich-Schiller-Universitaet Jena·JournalMolecular Carcinogenesis·DateFeb 6, 2017

Unearthing immune responses to common drugs

Australian researchers investigated how certain medications impact MAIT cell function, finding some prevent detection of infections while others activate the immune system. This discovery may lead to better understanding and control of immune reactions to drugs, as well as new therapies that manipulate MAIT cell behavior.

SourceMonash University·JournalNature Immunology·DateFeb 6, 2017