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The premier online source for science news since 1996. A service of the American Association for the Advancement of Science.
Updated: 29 min 21 sec ago

Scientists go deep to quantify perovskite properties

Jun 08 2018 - 00:06
Scientists led by Rice University and Los Alamos National Laboratory have discovered properties in naturally occurring solution-processed quantum wells that are likely to impact the growing field of low-cost perovskite based optoelectronics. They created a general scaling law that researchers can use to determine how to tune the electronic properties of 2D perovskite-based materials for devices.
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Reducing opioids not associated with lower patient satisfaction scores

Jun 08 2018 - 00:06
A Kaiser Permanente study of nearly 2,500 patients who used high doses of opioids for at least six months showed that reducing their opioid use did not lower their satisfaction with care. The study, 'Satisfaction With Care After Reducing Opioids for Chronic Pain,' was published today in The American Journal of Managed Care.
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Close encounters of the fishy kind

Jun 08 2018 - 00:06
Global Fishing Watch releases the first-ever 'live' global view of likely transshipping at sea -- a practice that can mask illegal fishing activity, and imagery of night-time fishing and its location, exposing vessels often hiddenfrom other monitoring systems.
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'Monstrous' new Russian saber-tooth fossils clarify early evolution of mammal lineage

Jun 08 2018 - 00:06
Fossils representing two new species of saber-toothed prehistoric predators have been described by researchers from the North Carolina Museum of Natural Sciences (Raleigh, USA) and the Vyatka Paleontological Museum (Kirov, Russia). These new species improve the scientists' understanding of an important interval in the early evolution of mammals -- a time, between mass extinctions, when the roles of certain carnivores changed drastically.
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Gene editing just got easier

Jun 08 2018 - 00:06
An international team of researchers has made CRISPR technology more accessible and standardized by simplifying its complex implementation in a way that offers a broad platform for off-the shelf genome engineering.
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Unexpected new dynamics for large DNA molecules in liquid suspension

Jun 08 2018 - 00:06
Polymer physicists at the University of Massachusetts Amherst are today reporting the unexpected and previously unknown behavior of a charged macromolecule such as DNA embedded in a charged hydrogel, where it displays what they call a 'topologically frustrated' inability to move or diffuse in the gel, a phenomenon they describe in the current Nature Communications.
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Oldest bubonic plague genome decoded

Jun 08 2018 - 00:06
An international team of researchers led by the Max Planck Institute for the Science of Human History has analyzed two 3,800-year-old Y. pestis genomes that suggest a Bronze Age origin for bubonic plague. The study, published in the journal Nature Communications, shows that this strain is the oldest sequenced to date that contains the virulence factors considered characteristic of the bubonic plague and is ancestral to the strain that caused the Black Death.
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Ukrainian villages still suffering legacy of Chernobyl more than 30 years on

Jun 08 2018 - 00:06
Milk in parts of Ukraine has radioactivity levels up to five times over the country's official safe limit, new research shows.
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Why seashells are tougher than chalk (video)

Jun 07 2018 - 00:06
Seashells are made mostly of calcium carbonate, also known as chalk, a mineral soft and crumbly enough to use for sidewalk doodles. Yet seashells are tough and resilient. In this video, Reactions explains why seashells are so different, and why you can't use them to draw on your driveway.
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Secrets of fish population changes revealed

Jun 07 2018 - 00:06
Populations of fish in the ocean are notoriously variable, waxing and waning in often unpredictable ways. Knowing what drives changes in fish population sizes is important for managing fisheries and conserving species.For the first time, scientists have linked the ecology of adult fish populations inhabiting coral reefs with the dispersal of baby fish between reefs, reporting the dynamics of a living network called a 'marine metapopulation.'
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Lead-free, efficient perovskite for photovoltaic cells

Jun 07 2018 - 00:06
A KAIST research team has proposed a perovskite material, Cs2Au2I6 that serves as a potential active material for highly efficient lead-free thin-film photovoltaic devices. This material is expected to lay the foundation to overcome previously known limitations of perovskite including its stability and toxicity issues.
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Monkeys eat fats and carbs to keep warm

Jun 07 2018 - 00:06
Crave comfort foods in cooler months? You're in good company. Golden snub-nosed monkeys prefer to eat more fats and carbohydrates in winter to help generate heat, research suggests.
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Nutritional quality of fish and squid reduced by warm water events

Jun 07 2018 - 00:06
The nutritional quality of fish and squid deteriorates under warm water events, research reveals -- with implications for the marine environment, marine predators and fisheries capturing food for human consumption.
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Honeybees prioritize well-fed larvae for emergency queen-rearing

Jun 07 2018 - 00:06
New research shows that honeybees prioritize the nutritional status of larvae when selecting for a new emergency queen.
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Children from older mothers more likely to have heart risks

Jun 07 2018 - 00:06
New research published in The Journal of Physiology demonstrates that adult offspring born to older mothers are more susceptible to heart risks in later life. These results could be crucial in developing preventative treatments for children born to older women.
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Cockpit protection (halo) to boost racing driver safety may affect steering accuracy

Jun 07 2018 - 00:06
The cockpit protection system fitted to racing cars, known as halo, may affect the driver's head position and motion, possibly compromising steering accuracy, suggest the results of a simulation test, using a similar structure, and published in the journal BMJ Case Reports.
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Synthetic cannabis ('spice', 'k2') use may boost stroke risk in young users

Jun 07 2018 - 00:06
Synthetic cannabis, also popularly known as 'spice' or 'k2,' may boost the risk of a stroke in young users, warn US doctors writing in the journal BMJ Case Reports.
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Ex-smokers might be better off with high rather than low nicotine e-cigs

Jun 07 2018 - 00:06
Vapers using low rather than high nicotine e-cigarettes may be using their devices more intensely, potentially increasing the risk of exposure to toxins in the vapour, according to new research funded by Cancer Research UK and published in Addiction today.
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Bikeshare could increase light rail transit ridership

Jun 07 2018 - 00:06
Coupling bikeshare with public transit could be an important component when trying to increase light rail transit (LRT) ridership, according to a new study out of the University of Waterloo.
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Systemic racism needs more examination related to health, says UofL researcher

Jun 07 2018 - 00:06
Although the discipline of public health has recently recognized racism as a social determinant of health, little research examines the issue related to systems and structures.
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