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Updated: 1 hour 14 min ago

New second line therapy for metastatic colorectal cancer is effective and safe

Sat, 11/18/2017 - 22:14
A randomized trial in 650 patients has confirmed the safety and efficacy of a new second line treatment for metastatic colorectal cancer.

Deletion of a stem cell factor promotes traumatic brain injury recovery in mice

Sat, 11/18/2017 - 01:53
Researchers found that conditional deletion of Sox2 – the gene encoding the SOX2 stem cell transcription factor – and the associated dampening of astrocyte reactivity appear to promote functional recovery, including behavioral recovery, after traumatic brain injury.

Cardiorespiratory fitness is essential to reduce risk of coronary heart disease

Sat, 11/18/2017 - 01:51
New findings emphasize the importance of measuring and maintaining aerobic fitness.

Small changes to organ procurement system could lead to more life-saving transplants

Sat, 11/18/2017 - 01:07
Slight changes to the system for allocating deceased-donor kidneys could result in higher rates of organ procurement and lead to more kidney transplants across the country, according to new research.

Breakthrough could launch organic electronics beyond cell phone screens

Sat, 11/18/2017 - 01:07
A new discovery points the way to more widespread use of an advanced technology generally known as organic electronics.

Hibernating ground squirrels provide clues to new stroke treatments

Sat, 11/18/2017 - 01:07
In the fight against brain damage caused by stroke, researchers have turned to an unlikely source of inspiration: hibernating ground squirrels. While the animals' brains experience dramatically reduced blood flow during hibernation, just like human patients after a certain type of stroke, the squirrels emerge from their extended naps suffering no ill effects. Now, scientists have identified a potential drug that could grant the same resilience to stroke patients.

A mom's support helps a child learn to handle negative emotions, but what if mom is distressed?

Sat, 11/18/2017 - 01:07
When children become upset, showing negative emotions or behaviors, some parents become distressed, while others are able to talk their child through the difficult situation. Studies have shown that a mothers' reaction -- positive or negative -- to her child's negative emotions can predict whether her child develops the ability to effectively regulate his emotions and behavior. A new study explores potential predictors of mothers' supportive or non-supportive behavior during emotional challenges.

A walk at the mall or the park? New study shows, for moms and daughters, a walk in the park is best

Sat, 11/18/2017 - 01:07
A family studies researchers believed that if the attention restoration theory, which describes how interaction with natural environments can reduce mental fatigue and restore attention, worked for individuals it might also work for families to help facilitate more positive family interactions and family cohesion. They tested their theory by looking at sets of moms and daughters who were asked to take a walk together in nature and a walk in a mall.

Archaeological research on social inequality published

Sat, 11/18/2017 - 01:07
The origins of social inequality might lie in the remnants of ancient Eurasia's agricultural societies, according to a new article.

Like a baby: The vicious cycle of childhood obesity and snoring

Fri, 11/17/2017 - 21:22
Scientists looked at the relationships among maternal snoring, childhood snoring and children's metabolic characteristics -- including body mass index (BMI) and insulin resistance, which reflects future risk for developing diabetes and cardiovascular disease -- in approximately 1,100 children followed from gestation through early adolescence.

How a poorly explored immune cell may impact cancer immunity and immunotherapy

Fri, 11/17/2017 - 20:18
The immune cells that are trained to fight off the body's invaders can become defective. It's what allows cancer to develop. So most research has targeted these co-called effector T-cells. But a new study takes a step back and considers: What if the problem isn't with the effector T-cells but starts higher up the cellular chain?

Flu vaccine prevents hospitalization in children, study shows

Fri, 11/17/2017 - 20:17
Children vaccinated against influenza are significantly less likely to experience serious complications from the virus that could land them in hospital, new research has found.

A photosynthetic organism's 'Water World'

Fri, 11/17/2017 - 20:17
Following the path of radicals and being able to identify many damaged residues because of incredibly accurate, expeditious and sensitive mass spectrometry, three scientists studied the great granddaddy of all photosynthetic organisms -- a strain of cyanobacteria -- to develop the first experimental map of that organism's water world.

Interstellar space probes: Where's the brakes?

Fri, 11/17/2017 - 20:17
With a miniaturized space probe capable of being accelerated to a quarter of the speed of light, we could reach Alpha Centauri, our nearest star, in 20 to 50 years. However, without a mechanism to slow it down, the space probe could only collect data from the star and its planets as it zoomed past. A theoretical physicist has now examined whether interstellar spacecraft can be decelerated using 'magnetic sails'.

A sub-desert savanna spread across Madrid 14 million years ago

Fri, 11/17/2017 - 20:17
The current landscape of Madrid city and its vicinity was really different 14 million years ago. A semi-desert savanna has been inferred for the center of the Iberian Peninsula in the middle Miocene. This ecosystem was characterized by a very arid tropical climatic regime with up to ten months of drought per year, according to a recent paper. Scientists reached such conclusions after comparing mammal fauna with Africa and Asia ones.

Strain-free epitaxy of germanium film on mica

Fri, 11/17/2017 - 20:17
Germanium was the material of choice in the early history of electronic devices, and due to its high charge carrier mobility, it's making a comeback. It's generally grown on expensive single-crystal substrates, adding another challenge to making it sustainably viable for most applications. To address this aspect, researchers demonstrate an epitaxy method that incorporates van der Waals' forces to grow germanium on mica.

Brain activity buffers against worsening anxiety

Fri, 11/17/2017 - 20:17
Boosting activity in brain areas related to thinking and problem-solving may also protect against worsening anxiety, suggests a new study. Using noninvasive brain imaging, the researchers found that at-risk people were less likely to develop anxiety if they had higher activity in a region of the brain responsible for complex mental operations. The results may be a step towards tailoring psychological therapies to the specific brain functioning of individual patients.

Inner clock: Biologists research the mechanism of an auxiliary clock

Fri, 11/17/2017 - 20:17
In December, the Nobel Prize for Medicine and Physiology will be awarded for the identification of genes that control the inner clock. The honored academics examined fruit flies to determine the biorhythm.

Taking a spin on plasma space tornadoes with NASA observations

Fri, 11/17/2017 - 20:17
Tornado-like swirls of space plasma create tumultuous boundaries in the near-Earth environment, letting dangerous high-energy particles slip into near Earth space, new NASA mission results show.

Heavy nitrogen molecules reveal planetary-scale tug-of-war

Fri, 11/17/2017 - 20:17
Researchers have discovered a planetary-scale tug-of-war between life, deep Earth and the upper atmosphere that is expressed in atmospheric nitrogen.