viernes, 25 de julio de 2014

ScienceDaily: Most Popular News

ScienceDaily: Most Popular News


Therapeutic bacteria prevent obesity in mice, study finds

Posted: 22 Jul 2014 11:25 AM PDT

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.

Hubble traces halo of a galaxy more accurately than ever before: An in-depth look at giant elliptical galaxy Centaurus A

Posted: 22 Jul 2014 07:22 AM PDT

Astronomers have probed the extreme outskirts of the stunning elliptical galaxy Centaurus A. The galaxy's halo of stars has been found to extend much further from the galaxy's center than expected and the stars within this halo seem to be surprisingly rich in heavy elements. This is the most remote portion of an elliptical galaxy ever to have been explored.

Massive neutrinos and new standard cosmological model: No concordance yet

Posted: 22 Jul 2014 06:13 AM PDT

Neutrinos, also known as 'ghost particles' because they barely interact with other particles or their surroundings, are massless particles according to the standard model of particle physics. However, there is a lot of evidence that their mass is in fact non-zero, but it remains unmeasured. In cosmology, neutrinos are suspected to make up a fraction —- small but important -— of the mysterious dark matter, which represents 90% of the mass of the galaxy. Modifying the standard cosmological model in order to include fairly massive neutrinos does not explain all the physical observations simultaneously.

Mammoth and mastodon behavior was less roam, more stay at home

Posted: 21 Jul 2014 03:19 PM PDT

Their scruffy beards weren't ironic, but there are reasons mammoths and mastodons could have been the hipsters of the Ice Age. According to new research, the famously fuzzy relatives of elephants liked living in Greater Cincinnati long before it was trendy -- at the end of the last ice age. A new study shows the ancient proboscideans enjoyed the area so much they likely were year-round residents and not nomadic migrants as previously thought.

Transiting exoplanet with longest known year: 704 Earth days

Posted: 21 Jul 2014 11:22 AM PDT

Astronomers have discovered a transiting exoplanet with the longest known year. Kepler-421b circles its star once every 704 days. In comparison, Mars orbits our Sun once every 780 days. Most of the 1,800-plus exoplanets discovered to date are much closer to their stars and have much shorter orbital periods.

Try, try again? Study says no: Trying harder makes it more difficult to learn some aspects of language, neuroscientists find

Posted: 21 Jul 2014 11:22 AM PDT

Neuroscientists find that trying harder makes it more difficult to learn some aspects of language. When it comes to learning languages, adults and children have different strengths. Adults excel at absorbing the vocabulary needed to navigate a grocery store or order food in a restaurant, but children have an uncanny ability to pick up on subtle nuances of language, sometimes speaking a second language like a native speaker within months. Brain structure plays an important role in this "sensitive period" for learning language, which is believed to end around adolescence.

Parents rank their obese children as 'very healthy'

Posted: 21 Jul 2014 11:21 AM PDT

Parents of obese children often do not recognize the potentially serious health consequences of childhood weight gain or the importance of daily physical activity in helping their child reach a healthy weight, a study shows. "Parents have a hard time changing their child's dietary and physical activity behaviors," said the study's lead author. "Our study tells us what factors may be associated with a parent's motivation to help their child become more healthy."

Scientists map one of most important proteins in life -- and cancer

Posted: 20 Jul 2014 05:42 PM PDT

Scientists reveal the structure of one of the most important and complicated proteins in cell division -- a fundamental process in life and the development of cancer -- in a new research article. Images of the gigantic protein in unprecedented detail will transform scientists' understanding of exactly how cells copy their chromosomes and divide, and could reveal binding sites for future cancer drugs.

Oceans vital for possibility for alien life

Posted: 20 Jul 2014 05:34 PM PDT

Researchers have made an important step in the race to discover whether other planets could develop and sustain life. New research shows the vital role of oceans in moderating climate on Earth-like planets Until now, computer simulations of habitable climates on Earth-like planets have focused on their atmospheres. But the presence of oceans is vital for optimal climate stability and habitability.

Consuming probiotics for a month helps diminish fat accumulation in the liver, according to a new study

Posted: 18 Jul 2014 06:56 AM PDT

Scientists have demonstrated through an experiment on obese rats that the consumption of probiotics for thirty days helps diminish the accumulation of fat in the liver. This new findingis a step forward on the fight against Non-Alcolohic Fatty Liver Disease (NAFLD), which is closely related to obesity and diabetes.

Scientists track gene activity when honey bees do and don't eat honey: Significant differences depending on diet

Posted: 17 Jul 2014 09:48 AM PDT

Many beekeepers feed their honey bees sucrose or high-fructose corn syrup when times are lean inside the hive. This practice has come under scrutiny, however, in response to colony collapse disorder, the massive -- and as yet not fully explained -- annual die-off of honey bees in the U.S. and Europe. Some suspect that inadequate nutrition plays a role in honey bee declines. Scientists took a broad look at changes in gene activity in response to diet in the Western honey bee, and found significant differences occur depending on what the bees eat.

Scientists Confirm Folk Remedy Repels Mosquitoes

Posted: 03 Jul 2006 06:19 AM PDT

Swatting mosquitoes and dodging other biting bugs is nearly a year-round chore in the Southeast, but such pests are swarming across the country with the advent of summer weather. A traditional folk remedy, known among people in Mississippi's hill country for at least a century, may provide some relief without all the worries of DEET and other harsh chemicals.

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