El telescopio espacial de rayos X de la ESA, XMM-Newton, ha hecho posible un sorprendente descubrimiento relativo al cóctel de partículas que escapan formando potentes chorros o, técnicamente, jets, de los alrededores de un agujero negro en nuestra galaxia. 

Mediante acciones de compensación, Guyana se comprometió a salvar su bosque tropical, considerado un tesoro viviente, de las actividades destructivas de mineros que buscan otra clase de fortuna, enterrada bajo este frágil ecosistema. Pero el ministro de Recursos Naturales, Robert Persaud, advirtió que el país perderá alrededor...

La egipcia Nihal Saad Zaghloul, de casi 30 años, enfrenta como otras jóvenes el riesgo cotidiano de ser acosada sexualmente en las calles de El Cairo. Pero la revolución en su país la hizo darse cuenta de que la gente puede unirse y de que ella misma puede marcar la diferencia. En Egipto aumentan...

A group of Massachusetts General Hospital investigators has identified a molecule that plays a key role in the breakdown of the kidney filter, presenting a potential therapeutic target for stopping the damage before it becomes irreversible. Fuente : http://www.eurekalert.org/pub_releases/2013-11/mgh...

Skin provides a first line of defense against viruses, bacteria and parasites that might otherwise make people ill. When an injury breaks that barrier, a systematic chain of molecular signaling launches to close the wound and re-establish the skin's layer of protection. A study led by researchers from the University of...

A team of researchers, led by Suniti Karunatillake at LSU's Department of Geology and Geophysics, and including Stony Brook University, USGS-Flagstaff AZ, and Rider University, developed an image analysis and segmentation algorithm specifically to aid planetary scientists with the task of analyzing soil samples taken by Mars...

Research in recent years has suggested that young Americans might be less creative now than in decades past, even while their intelligence -- as measured by IQ tests -- continues to rise. But new research from the University of Washington Information School and Harvard University, closely studying 20 years of student creative...

Researchers from the Cardiovascular Institute at Rhode Island, The Miriam and Newport hospitals will present 22 abstracts, both poster and oral presentations, at the upcoming American Heart Association Scientific Sessions, to be held in Dallas Nov. 16-20, 2013. Scientific Sessions is the foremost cardiovascular research meeting...

In mid-November, a football-sized mission called Firefly, which is funded by the National Science Foundation, will launch into space to study lightning and these gamma ray flashes from above. Fuente : http://www.eurekalert.org/pub_releases/2013-11/nsf...

Traditionally, it was assumed that corals do not face a risk of extinction unless they become very rare or have a very restricted range. A team of scientists from the University of Hawaii and the National Oceanic and Atmospheric Administration has revealed that global changes in climate and ocean chemistry affect corals whether...

The Tough Mudder, an extreme sports event that bills itself as "probably the toughest event on the planet," resulted in injuries ranging from multiple electrical burns to seizure-induced Todd's paralysis. A case series of serious injuries sustained by participants in one such race was reported online today in Annals of...

Berkeley Lab researchers have found a bulk metallic glass based on palladium that's as strong as the best composite bulk metallic glasses and comparable to steel, aluminum and titanium. Fuente : http://www.eurekalert.org/pub_releases/2013-11/dbn...

Two large, complex sunspots are moving across the face of the sun. One, which produced considerable solar activity in the past weeks, has almost rotated off completely. A new sunspot rounded into view on Nov. 11, 2013 and is now making its way across the Earth-side of the sun. An active region can contain one or more sunspots....

Un documento interno de la delegación de Estados Unidos en la conferencia climática de la ONU, al que tuvo acceso IPS, muestra que la agenda de Washington es minimizar la importancia de los daños y pérdidas del calentamiento global, promover los intereses privados en el Fondo Verde para el Clima y retrasar los plazos para...

Para los pequeños estados insulares en desarrollo del Caribe, no hay nada más importante que la conferencia sobre cambio climático que se celebra en la capital de Polonia desde el 11 y hasta el 22 de este mes. “Estamos sufriendo el impacto del cambio climático en este mismo momento. Tenemos que...

According to a new theory, imperfections in certain two-dimensional materials create the conditions by which nanoscale magnetic fields arise. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/7...

Medical researchers have discovered the structure of a potential drug target for a rare genetic disease, paving the way for an alternative treatment for the condition. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/V...

Research with baboons may help explain why some people who take bone-strengthening drugs like bisphosphonates are at risk for atypical fractures in the long bones in their legs. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/t...

There's no peak in sight -- fitness peak, that is -- for the bacteria being studied in one American lab. Scientists there have been running an evolutionary bacteria experiment for 25 years, generating more than 50,000 generations. In a paper published, the author compares it to hiking. Fuente :...

Scientists have created a silicon-based water splitter that is both low-cost and corrosion-free. The novel device -- a silicon semiconductor coated in an ultrathin layer of nickel -- could help pave the way for large-scale production of clean hydrogen fuel from sunlight. Fuente :...

A normally fragile quantum state has been shown to survive at room temperature for a world record 39 minutes, overcoming a key barrier towards building ultrafast quantum computers. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/P...

Scientists have shown for the first time that atoms can work collectively rather than independently of each other to share light. Quantum physicists have long discussed such an effect, but it has not been seen before in an experiment. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/S...

Wolves likely were domesticated by European hunter-gatherers more than 18,000 years ago, and gradually evolved into dogs that became household pets, biologists report. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/S...

Scientists have developed a new computer modeling technique that offers the promise, for the first time, of producing continually updated daylong predictions of wildfire growth throughout the lifetime of long-lived blazes. The technique combines detailed computer simulations with newly available satellite observations. Fuente :...

Biologists have uncovered a complicated chain of molecular events that leads from insulin to protein degradation in muscles and significantly diminished life span in fruit flies. The new study, which may have broad implications across species, identifies the fly version the mammalian protein activin as the central culprit in...

La domesticación del lobo por los humanos tuvo lugar en tierras europeas hace más de 19.000 años, a través de un proceso largo del que ambas especies se beneficiaron, según indica un análisis genético comparado de razas actuales de cánidos y fósiles de todo el mundo. Esta nueva afirmación contradice las hipótesis anteriores,...

Un estudio, que publica la revista Science, ha identificado las áreas protegidas más importantes para prevenir la extinción de los mamíferos, aves y anfibios más amenazados del mundo. Se han reconocido como ‘excepcionalmente insustituibles’ setenta y ocho de estos lugares, que comprenden 137 aéreas protegidas en un total de 34...

Dos estudios publicados en la revista Cell describen la senescencia como un proceso normal y crucial durante el desarrollo embrionario. Estos estudios atribuyen un rol completamente nuevo e inesperado a este proceso que a menudo se ha relacionado con el envejecimiento y el cáncer. Investigadores...

• Dos estudis publicats a la revista Cell descriuen la senescència com un procés normal i fonamental durant el desenvolupament embrionari. Aquests estudis atribueixen un rol nou i inesperat a aquest procés que sovint s’ha relacionat amb l’envelliment i el càncer. • Investigadors del Centre de...