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The premier online source for science news since 1996. A service of the American Association for the Advancement of Science.
Actualizado: hace 6 horas 19 mins

People more likely to be generous towards charities if they donate before a windfall

Lun, 02/18/2019 - 23:00
People will donate more to charity if they make a pledge before receiving an unexpected cash windfall, a study has shown.

Incoherent testimony from sexually abused children with PTSD can indicate credibility

Lun, 02/18/2019 - 23:00
Age and post-traumatic stress disorder (PTSD) are key factors that affect how coherently sexually abused children are able to recount traumatic events, according to a new study published in the journal Heliyon.

NASA-NOAA satellite sees powerful Tropical Cyclone Oma affecting New Caledonia

Lun, 02/18/2019 - 23:00
Tropical Cyclone Oma appeared well-organized on satellite imagery as it moved through the Southern Pacific Ocean, just northwest of New Caledonia.

Familiarity breeds aggression

Lun, 02/18/2019 - 23:00
Aggressiveness among animals may increase the longer individuals live together in stable groups. This is the finding of a recent study carried out by researchers from the Leibniz-Institute of Freshwater Ecology and Inland Fisheries. The study, published in the journal Animal Behaviour used the Amazon molly, a naturally clonal fish species that produces genetically identical individuals to isolate the effects of familiarity on behavior.

International medical graduates care for Medicare patients with greater health care needs

Lun, 02/18/2019 - 23:00
A study by a Massachusetts General Hospital research team indicates that internal medicine physicians who are graduates of medical schools outside the US care for Medicare patients with more complex medical needs than those cared for by graduates of American medical schools.

Citizen scientist finds ancient white dwarf star encircled by puzzling rings

Lun, 02/18/2019 - 23:00
The oldest and coldest known white dwarf -- an Earth-sized remnant of a sun-like star that has died -- could be the first known white dwarf with multiple dust rings. The discovery, made by a volunteer working with the NASA-led Backyard Worlds: Planet 9 project, forces researchers to reconsider models of planetary systems.

NIST 'Astrocomb' opens new horizons for planet-hunting telescope

Lun, 02/18/2019 - 23:00
The hunt for Earth-like planets, and perhaps extraterrestrial life, just got more precise, thanks to record-setting starlight measurements made possible by a National Institute of Standards and Technology (NIST) 'astrocomb.'

New model mimics persistent interneuron loss seen in prematurity

Lun, 02/18/2019 - 23:00
Children's research-clinicians created a novel preclinical model that mimics the persistent interneuron loss seen in preterm human infants, identifying interneuron subtypes that could become future therapeutic targets to prevent or lessen neurodevelopmental risks.

Research finds federalism still effective against would-be strongmen like Trump

Lun, 02/18/2019 - 23:00
The fear that states in federal countries are destined to lose their powers to central government is unwarranted, new research at the University of Kent has found.An international project on centralization and decentralization in federations -- the first major study of its kind -- finds that centralization is not inevitable. Even the United States, where federalism is often seen as being at risk, is less centralized than many think.

Researchers key to advance care planning with cancer clinical trial patients

Lun, 02/18/2019 - 23:00
Cancer clinical trials are an important option for patients with cancer. Yet, once a trial ends, patients still need care plans. Little is known at what point during clinical trial transitions to initiate advance planning discussions or how to educate research teams to communicate with and prepare patient-participants and their families for the next steps after they leave a cancer clinical trial.

Survey: Misunderstanding food date labels linked with higher food discards

Lun, 02/18/2019 - 23:00
A new survey examining US consumer attitudes and behaviors related to food date labels found widespread confusion, leading to unnecessary discards, increased waste and food safety risks. The survey analysis was led by researchers at the Johns Hopkins Center for a Livable Future, which is based at the Johns Hopkins Bloomberg School of Public Health.

How to make the push-up work for you

Lun, 02/18/2019 - 23:00
If you want to improve your golf swing, softball pitch, or tennis serve, the push-up is for you.The push-up is a highly adaptable exercise that can be tailored to help individuals with specific needs, say a team of UWaterloo researchers who studied a modified push-up, called a 'push-up plus.'

Dose of vitamin C helps gold nanowires grow

Lun, 02/18/2019 - 23:00
Rice University scientists discover a method to turn stubby gold nanorods into gold nanowires of impressive length. The metal wires could be valuable for sensing, diagnostic, imaging and therapeutic applications.

New nurses work overtime, long shifts, and sometimes a second job

Lun, 02/18/2019 - 23:00
New nurses are predominantly working 12-hour shifts and nearly half work overtime, trends that have remained relatively stable over the past decade, finds a new study by researchers at NYU Rory Meyers College of Nursing. In addition, 13 percent hold a second job, according to the study published in the Journal of Advanced Nursing.

Study unveils a blueprint for treating a deadly brain tumor

Lun, 02/18/2019 - 23:00
In a study of mice and human brain tumors researchers at the University of the Michigan, Ann Arbor, searched for new treatments by exploring the reasons why some patients with gliomas live remarkably longer than others. The results suggested that certain patients' tumor cells are less aggressive and much better at repairing DNA than others but are difficult to kill with radiation. The researchers then showed that combining radiation therapy with cancer drugs designed to block DNA repair may be an effective treatment strategy.

Let's dance!

Lun, 02/18/2019 - 23:00
Research shows that dance supports wellbeing, improves group spirit, and boosts learning. The Finnish research initiative ArtsEqual has released a recommendation stating that school children should have more opportunities to engage in dance and bodily expression as part of their school curriculum.

New technology captures movement of quantum particles with unprecedented resolution

Lun, 02/18/2019 - 23:00
A new Tel Aviv University study explores the activity of quantum particles in 2D materials within an unprecedented small time frame and at an extraordinarily high spatial resolution. These are highly sought-after capabilities for advanced communications technologies and for photonics-based quantum computers.

Seeing the unseeable

Lun, 02/18/2019 - 23:00
Researchers at Cardiff University have used X-ray crystallography and computer simulation to get a closer look at how viruses bind cells and cause infection.

Researchers develop new one-two punch against melanoma in mouse model

Lun, 02/18/2019 - 23:00
Study shows new forms of an older anti-cancer agent appear to enhance the immune system's ability to fight melanoma in mice.

Climate goals of the Paris Agreement: Impact of land use

Lun, 02/18/2019 - 23:00
Significantly less than two degrees Celsius above pre-industrial times -- this is the temperature to which global warming should be limited, according to the Paris Climate Agreement. In a current study, a research team from the Karlsruhe Institute of Technology and the University of Edinburgh shows that previous efforts to reduce greenhouse gases through human land use are insufficient.

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