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Updated: 1 hour 23 min ago

Alaska frogs reach record lows in extreme temperature survival

8 hours 57 min ago
"Alaska wood frogs spend more time freezing and thawing outside than a steak does in your freezer, and the frog comes back to life in the spring in better shape than the steak," said the lead author on a recent paper demonstrating that freeze tolerance in Alaska wood frogs is more extreme than previously thought.
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Dopamine transporter: Stampede supercomputer used to study common link between addiction, neurological disease

8 hours 57 min ago
The XSEDE-allocated Stampede supercomputer has been used to study the dopamine transporter. Stampede is ranked seventh on the Top 500 list of supercomputers. Its research links altered dopamine signaling and dopamine transporter function to neurological and psychiatric diseases including early-onset Parkinsonism, ADHD, and cocaine addiction.
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Vaccine for dust-mite allergies created

8 hours 59 min ago
A vaccine for dust-mite allergies has been created, researchers report. In lab tests and animal trials, the nano-sized vaccine package was readily absorbed by immune cells and dramatically lowered allergic responses. "What is new about this is we have developed a vaccine against dust-mite allergens that hasn't been used before," says a corresponding author on the paper.
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Potential Genetic Link Between Epilepsy, Neurodegenerative Disorders

8 hours 59 min ago
A potential link between epilepsy and neurodegenerative disorders has been uncovered by new research. "This is, to our knowledge, the first direct genetic evidence demonstrating that mutations in the fly version of a known human epilepsy gene produce seizures through altered vesicle transport," says the senior author of the study.
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Safeguarding Belize's barrier reef with conservation drones

10 hours 16 min ago
Seeking to gain a high-tech edge over illegal fishers, the Government of Belize will use “eyes in the sky” to enforce fishing regulations in the biodiverse Glover’s Reef Marine Reserve and other reef systems in what is the first use of conservation drones to monitor marine protected areas.
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Oso disaster had its roots in earlier landslides

10 hours 16 min ago
A new geological study concludes that the disastrous March 22 landslide that killed 43 people in the rural Washington state community of Oso involved the "remobilization" of a 2006 landslide on the same hillside. "Perhaps the most striking finding is that, while the Oso landslide was a rare geologic occurrence, it was not extraordinary," said a team leader for the study.
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Vulnerability of sharks as collateral damage in commercial fishing shown by study

11 hours 13 min ago
A new study that examined the survival rates of 12 different shark species when captured as unintentional bycatch in commercial longline fishing operations found large differences in survival rates across the 12 species, with bigeye thresher, dusky, and scalloped hammerhead being the most vulnerable.
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Extra exercise helps depressed smokers kick the habit faster

11 hours 14 min ago
People diagnosed with depression need to step out for a cigarette twice as often as smokers who are not dealing with a mood disorder. And those who have the hardest time shaking off the habit may have more mental health issues than they are actually aware of, research suggests. While nearly one in five North American adults are regular smokers, a figure that continues to steadily decline, about 40 per cent of depressed people are in need of a regular drag.
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Therapeutic bacteria prevent obesity in mice, study finds

11 hours 15 min ago
A probiotic that prevents obesity could be on the horizon. Bacteria that produce a therapeutic compound in the gut inhibit weight gain, insulin resistance and other adverse effects of a high-fat diet in mice, investigators have discovered. Regulatory issues must be addressed before moving to human studies, but the findings suggest that it may be possible to manipulate the bacterial residents of the gut -- the gut microbiota -- to treat obesity and other chronic diseases.
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Enhanced instrument enables high-speed chemical imaging of tissues

11 hours 15 min ago
A research team has demonstrated a dramatically improved technique for analyzing biological cells and tissues based on characteristic molecular vibrations. The new technique is an advanced form of Raman spectroscopy that is fast and accurate enough to create high-resolution images of biological specimens, with detailed spatial information on specific biomolecules, at speeds fast enough to observe changes in living cells.
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Vitamin D deficiency raises risk of schizophrenia diagnosis

11 hours 15 min ago
Vitamin D-deficient individuals are twice as likely to be diagnosed with schizophrenia as people who have sufficient levels of the vitamin, according to a new study. Vitamin D helps the body absorb calcium and is needed for bone and muscle health. The skin naturally produces this vitamin after exposure to sunlight. People also obtain smaller amounts of the vitamin through foods, such as milk fortified with vitamin D. More than 1 billion people worldwide are estimated to have deficient levels of vitamin D due to limited sunshine exposure.
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High-salt diet doubles threat of cardiovascular disease in people with diabetes

11 hours 15 min ago
People with Type 2 diabetes who eat a diet high in salt face twice the risk of developing cardiovascular disease as those who consume less sodium, according to a new study. Diabetes occurs when there is too much sugar in the bloodstream. People develop Type 2 diabetes when their bodies become resistant to the hormone insulin, which carries sugar from the blood to cells.
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African elephant genome suggests they are superior smellers

11 hours 15 min ago
Sense of smell is critical for survival in many mammals. In a new study, researchers examined the olfactory receptor repertoire encoded in 13 mammalian species and found that African elephants have the largest number of OR genes ever characterized; more than twice that found in dogs, and five times more than in humans.
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Ultrasonically propelled nanorods spin dizzyingly fast

12 hours 33 min ago
Vibrate a solution of rod-shaped metal nanoparticles in water with ultrasound and they'll spin around their long axes like tiny drill bits. Why? No one yet knows exactly. But researchers have clocked their speed -- and it's fast. At up to 150,000 revolutions per minute, ten times faster than any nanorotor ever reported.
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Technique simplifies creation of high-tech crystals

12 hours 33 min ago
Highly purified crystals that split light with uncanny precision are key parts of high-powered lenses, specialized optics and, potentially, computers that manipulate light instead of electricity. But producing these crystals by current techniques, such as etching them with a precise beam of electrons, is often extremely difficult and expensive. Now, researchers have proposed a new method that could allow scientists to customize and grow these specialized materials, known as photonic crystals, with relative ease.
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Quantum leap in lasers brightens future for quantum computing

12 hours 33 min ago
Scientists have devised a breakthrough laser that uses a single artificial atom to generate and emit particles of light. The laser may play a crucial role in the development of quantum computers, which are predicted to eventually outperform today's most powerful supercomputers.
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How children categorize living things

12 hours 34 min ago
"Name everything you can think of that is alive." How would a child respond to this question? Would his or her list be full of relatives, animals from movies and books, or perhaps neighborhood pets? Would the poppies blooming on the front steps make the list or the oak tree towering over the backyard? The children's responses in a recent study revealed clear convergences among distinct communities but also illuminated differences among them.
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Radio frequency ID tags on honey bees reveal hive dynamics

12 hours 34 min ago
Scientists attached radio-frequency identification tags to hundreds of individual honey bees and tracked them for several weeks. The effort yielded two discoveries: Some foraging bees are much busier than others; and if those busy bees disappear, others will take their place.
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Understanding how neuro cells turn cancerous

12 hours 34 min ago
New research, for the first time, brings scientists nearer to understanding how some cells in the brain and nervous system become cancerous. The team studied a tumor suppressor called Merlin. Their results have identified a new mechanism whereby Merlin suppresses tumors, and that the mechanism operates within the nucleus. The research team has discovered that unsuppressed tumor cells increase via a core signalling system, the hippo pathway, and they have identified the route and method by which this signalling occurs.
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Communication between nostril/skin microbiome bacteria can influence pathogen behavior

12 hours 34 min ago
Scientists have made an important discovery about the molecular interactions that occur between generally benign species of Propionibacterium bacteria and the pathogenic bacterium Staphylococcus aureus, the cause of most 'staph' infections.
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