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Updated: 57 min 18 sec ago

Babies learn words differently as they age, researcher finds

Wed, 17/09/2014 - 6:14pm
Researcher has found that toddlers learn words differently as they age, and a limit exists as to how many words they can learn each day. These findings could help parents enhance their children's vocabularies and assist speech-language professionals in developing and refining interventions to help children with language delays.
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Nemo can travel great distances to connect populations: Baby clownfish travel hundreds of kilometers across open ocean

Wed, 17/09/2014 - 6:14pm
Clownfish spend their entire lives nestling in the protective tentacles of host anemones, but new research shows that as babies they sometimes travel hundreds of kilometres across the open ocean. Although the process of long-distance dispersal by reef fish has been predicted, this is the first time that the high level exchange of offspring between distant populations has been observed.
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The future of global agriculture may include new land, fewer harvests

Wed, 17/09/2014 - 6:14pm
Climate change may expand suitable cropland, particularly in the Northern high latitudes, but tropical regions may becoming decreasingly suitable.
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U.S. health system not properly designed to meet needs of patients nearing end of life, say experts

Wed, 17/09/2014 - 5:18pm
The US health care system is not properly designed to meet the needs of patients nearing the end of life and those of their families, and major changes to the system are necessary, says a new report.
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Engineers develop algorithms to switch out and recharge battery modules in electric cars

Wed, 17/09/2014 - 5:18pm
Imagine being able to switch out the batteries in electric cars just like you switch out batteries in a photo camera or flashlight. A team of engineers are trying to accomplish just that, in partnership with an engineering company. They have developed smaller units within the battery, called modules, and a battery management system that will allow them to swap out and recharge the modules.
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Entrepreneurs aren't overconfident gamblers, researchers say

Wed, 17/09/2014 - 5:18pm
Leaving one's job to become an entrepreneur is inarguably risky. But it may not be the fear of risk that makes entrepreneurs more determined to succeed. A new study finds entrepreneurs are also concerned about what they might lose in the transition from steady employment to startup.
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Lack of facial expression leads to perceptions of unhappiness, new research shows

Wed, 17/09/2014 - 5:18pm
People with facial paralysis are perceived as being less happy simply because they can't communicate in the universal language of facial expression, a new study shows. The findings highlight the important role the face plays in everyday communication and indicates people may hold a prejudice against those with facial paralysis because of their disability.
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Nature of war: Chimps inherently violent; Study disproves theory that 'chimpanzee wars' are sparked by human influence

Wed, 17/09/2014 - 5:18pm
Of all of the world's species, humans and chimpanzees are some of the only species to coordinate attacks on their own members. Since Jane Goodall introduced lethal inter-community killings, primatologists have debated the concept of warfare in this genus. New research from an international coalition of ape researchers has shed new light on the subject, suggesting that human encroachment and interference is not, as previous researchers have claimed, an influential predictor of chimp-on-chimp aggression.
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New explanation for origin of plate tectonics: What set Earth's plates in motion?

Wed, 17/09/2014 - 5:18pm
Geologists have a new explanation for the origin of plate tectonics. Researchers suggest it was triggered by the spreading of early continents then it eventually became a self-sustaining process.
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New branch added to European family tree: Europeans descended from at least 3, not 2, groups of ancient humans

Wed, 17/09/2014 - 5:18pm
Previous work suggested that Europeans descended from two ancestral groups: indigenous hunter-gatherers and early European farmers. This new study shows that there was also a third ancestral group, the Ancient North Eurasians, who contributed genetic material to almost all present-day Europeans. The research also reveals an even older lineage, the Basal Eurasians.
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Math model designed to replace invasive kidney biopsy for lupus patients

Wed, 17/09/2014 - 5:16pm
Mathematics might be able to reduce the need for invasive biopsies in patients suffering kidney damage related to the autoimmune disease lupus. The model could also be used to monitor the effectiveness of experimental treatments for inflammation and fibrosis, researchers say.
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Physicists heat freestanding graphene to control curvature of ripples

Wed, 17/09/2014 - 5:16pm
Physicists have discovered that heating can be used to control the curvature of ripples in freestanding graphene. The finding provides fundamental insight into understanding the influence temperature exerts on the dynamics of freestanding graphene. This may drive future applications of the flexible circuits of consumer devices such as cell phones and digital cameras.
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Reduced energy density in foods can create healthier food environment, may help to reduce obesity

Wed, 17/09/2014 - 5:16pm
An official position statement pointing to the pervasive availability of foods high in energy density as a contributing factor for weight gain and obesity has been released by the Obesity Society. As detailed in the position statement, a diet reduced in energy density can accommodate a wide range of eating patterns, and can support a lifestyle that includes a healthy, well-balanced diet for weight management.
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Certain gut bacteria may induce metabolic changes following exposure to artificial sweeteners

Wed, 17/09/2014 - 5:16pm
Artificial sweeteners have long been promoted as diet and health aids. But breaking research shows that these products may be leading to the very diseases they were said to help prevent: scientists have discovered that, after exposure to artificial sweeteners, our gut bacteria may be triggering harmful metabolic changes.
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Testosterone therapy should only be for men with hypogonadism, experts say

Wed, 17/09/2014 - 5:16pm
The appropriate population for testosterone replacement therapy is men with hypogonadism, experts say. The treatment has vast potential for adverse cardiovascular outcomes associated with its use in inappropriate populations, they add. Though testosterone use has sharply increased among older men in the past decade, the experts say that testosterone therapy should be limited to men who meet the diagnostic guidelines for hypogonadism.
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Smallest known galaxy with a supermassive black hole

Wed, 17/09/2014 - 5:16pm
Astronomers have discovered that an ultracompact dwarf galaxy harbors a supermassive black hole – the smallest galaxy known to contain such a massive light-sucking object. The finding suggests huge black holes may be more common than previously believed.
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Smart teens rub off on teammates, study shows

Wed, 17/09/2014 - 4:12pm
Having smart teammates can double a high school student's odds of going to college, research shows, and the type of or club does not appear to matter. Participating in more than one extra-curricular activity didn't bring bigger benefits, the researchers add.
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Counting fish teeth reveals regulatory DNA changes behind rapid evolution, adaptation

Wed, 17/09/2014 - 4:12pm
Threespine sticklebacks, small fish found around the globe, undergo rapid evolutionary change when they move from the ocean to freshwater lakes, losing their armor and gaining more teeth in as little as 10 years. A biologist shows that this rapid change results not from mutations in functional genes, but changes in regulatory DNA. He pinpoints a gene that could be responsible for teeth, bone or jaw deformities in humans, including cleft palate.
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First blood test to diagnose depression in adults

Wed, 17/09/2014 - 4:12pm
The first blood test to diagnose major depression in adults has been developed, providing the first objective, scientific diagnosis for depression. The test also predicts who will benefit from cognitive behavioral therapy, offering the opportunity for more effective, individualized therapy. The test also showed the biological effects of the therapy, the first measurable, blood-based evidence of the therapy's success and showed who is vulnerable to recurring episodes of depression.
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Role of hormone in response to ovarian cancer treatment

Wed, 17/09/2014 - 4:12pm
The results of an investigation into how we might better tailor therapy for ovarian cancer have been released. The goal of the study was to investigate the role of the hormone HE4 in modulating an ovarian cancer's response to hormones and hormonal therapies. HE4 is a biomarker that is elevated in ovarian cancer and is known to play a role in resistance to chemotherapy.
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