Fuente : http://noticiasdelaciencia.com/not/7894//...

Investigadores españoles identifican la familia de asteroides a la que pertenecía el objeto que cayó sobre la ciudad rusa de Chelyabinsk en febrero. Podrían ser cientos, difíciles de detectar y es probable que se crucen con la Tierra en los próximos años ||| Fuente :...

¿Qué nos hace distintos? ¿Qué nos diferencia de nuestros vecinos, de nuestros amigos o de desconocidos de lejanos países? Desde hace años sabemos que existen diferencias genéticas entre distintas poblaciones humanas que contribuyen a su aspecto y a una diferente susceptibilidad a las enfermedades. Un estudio liderado por...

En los últimos años han aumentado las piscinas naturalizadas, aquellas que no utilizan cloro ni otros productos químicos para su desinfección. Ahora científicos de la Universidad de Barcelona han detectado contaminación fecal en algunas de ellas debido a las deposiciones de pájaros y otros animales, por lo que recomiendan...

In a new study, researchers at the Center for Brain and Spinal Cord Repair at the Ohio State University Wexner Medical Center show that is possible to restore immune function in spinal injured mice. People with spinal cord injury often are immune compromised, which makes them more susceptible to...

More than 12 billion years ago a star exploded, glowing so brightly that it outshone its entire galaxy by a million times. This brilliant flash traveled across space for 12.7 billion years to a planet that hadn't even existed at the time of the explosion -- our Earth. By analyzing this light,...

A new report from Simon Fraser University researcher Bohdan Nosyk calls for the expansion of heroin and opioid medical treatment to stem the increase of overdose deaths in Canada and the US. Fuente : http://www.eurekalert.org/pub_releases/2013-08/sfu...

As hurricanes hit US coastlines, scientists study them to improve forecasts critical for saving lives and property. Last year, unmanned aircraft from NASA flew into the biggest storms as part of a project to improve hurricane forecasts. Three projects in particular may be responsible for a 20...

Frozen sperm taken by biopsy from testicles in men with no sperm in their semen is as effective as fresh sperm taken by biopsy in helping couples conceive through in vitro fertilization, according to a study at Washington University School of Medicine in St. Louis. Fuente :...

New Johns Hopkins research suggests that people who undergo minimally invasive placement of stents to open clogged leg arteries are significantly less likely than those who have conventional bypass surgery to need a second treatment for the condition within two years. Fuente :...

More efficient catalytic converters on autos, improved batteries and more sensitive gas sensors are some of the potential benefits of a new system that can directly measure the manner in which nanocrystals adsorb and release hydrogen and other gases. Fuente :...

Behind the dazzling variety of shapes and forms in trees lies a remarkably similar architecture based on fundamental, shared principles, University of Arizona ecologists have discovered. The findings allow scientists to draw realistic conclusions about the ecological impacts of trees across...

Something big is about to happen on the sun. According to measurements from NASA-supported observatories, the sun's vast magnetic field is about to flip. Fuente : http://www.eurekalert.org/pub_releases/2013-08/nsf...

Changes to proteins called histones, which are associated with DNA, can control whether or not a gene is allowed to function. The changes may be important in maintaining the genes' "expression potential" so that future cells behave as their parent cells did. The discovery, which may have...

Using infrared data from the Subaru Telescope in Hawaii, an international team of astronomers has imaged a giant planet around the bright star GJ 504. Several times the mass of Jupiter and similar in size, the new world, dubbed GJ 504b, is the lowest-mass planet ever detected around a star like the...

The surface of Mars it pocked by more than 600 "double-layered ejecta" DLE craters, but how these odd craters formed has been a mystery. A new study makes the case that glacial ice, possibly tens of meters thick at the time of impacts millions of years ago, may be responsible for the unique...

The painful, red skin that comes from too much time in the sun is caused by a molecule abundant in the skin's epidermis, a new study shows. Blocking this molecule, called TRPV4, greatly protects against the painful effects of sunburn. The research, which was conducted in mouse models and human skin...

Future warming from fossil fuel burning could be more intense and longer-lasting than previously thought. This prediction emerges from a new study that includes insights from episodes of climate change in the geologic past to inform projections of human-made future climate change. Fuente :...

Medical researchers have identified 18 new genes responsible for driving glioblastoma multiforme, the most common -- and most aggressive -- form of brain cancer in adults. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/1...

The colorful restaurant menus that thousands of tourists bring home as souvenirs from Hawaii hold more than happy memories of island vacations. They also contain valuable data that are helping a trio of researchers track long-term changes to important fisheries in the Aloha State. Fuente :...

Some East African Maasai pastoralists may be hunting lions as a form of political protest, according to a new study. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/U...

The global treaty that headed off destruction of Earth's protective ozone layer has also prevented major disruption of global rainfall patterns, even though that was not a motivation for the treaty, according to a new study. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/K...

Stem cells found in mouth tissue can not only become other types of cells but can also relieve inflammatory disease, according to a new study. The study indicates that the stem cells in the gingiva -- obtained via a simple biopsy of the gums -- may have important medical applications in the future....

A combination of brain scans and reading tests has revealed that several regions in the brain are responsible for allowing humans to read. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/a...

Fuente : http://www.alphagalileo.org/ViewItem.aspx?ItemId=1...

Fuente : http://www.alphagalileo.org/ViewItem.aspx?ItemId=1...

Researchers have revealed more about graphene's mechanical properties and demonstrated a technique to improve the stretchability of graphene -- developments that should help engineers and designers come up with new technologies that make use of the material. Fuente :...

In a small new study, researchers report that pregnant smokers who felt less emotional attachment to their fetuses may have smoked more than women with greater feelings of attachment. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/s...

In a mouse model of neuropathic pain, researchers used antioxidants to preserve GABA neurons post-injury. The result: Less pain behavior. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/N...