Un grupo de científicos ha hallado en la Sima del Elefante en Atapuerca (Burgos, España), un sílex cretácico del denominado 'modo 1' –tecnología muy rudimentaria–, en el nivel TE8. Se localiza unos dos metros por debajo del TE9, datado en 1,2 millones de años, donde en 2007 se encontró la... Fuente :...

Fuente : http://noticiasdelaciencia.com/not/7796//...

Entrega del podcast Quilo de Ciencia, realizado por Jorge Laborda (catedrático de Bioquímica y Biología Molecular de la Universidad de Castilla-La Mancha), en Ciencia para Escuchar, que recomendamos por su interés. La transformación de energía química en mecánica sucede cada vez que movemos un......

University of Iowa researchers and their colleagues have found that the energy in the Earth's Van Allen radiation belts originate within the belts themselves, from accelerating electrons. Results appear in the journal Science Express. Fuente : http://www.eurekalert.org/pub_releases/2013-07/uoi...

The path of the peanut from a snack staple to the object of bans at schools, day care centers and beyond offers important insights into how and why a rare, life-threatening food allergy can prompt far-reaching societal change, according to a Princeton University researcher. Fuente :...

Harvard researchers have identified a pair of genes which appear to be responsible for allowing a specific strain of bacteria in the human gut to break down Lanoxin -- a widely prescribed cardiac drug -- into an inactive compound, as well as a possible way to turn the process off. Fuente :...

Approaching the sun, Comet ISON floats against a seemingly infinite backdrop of numerous galaxies and a handful of foreground stars. The icy visitor, with its long gossamer tail, appears to be swimming like a tadpole through a deep pond of celestial wonders. Fuente : http://www.eurekalert.org/pub_releases/2013-07/nsf...

New results from NASA's Van Allen Probes now show that the acceleration energy comes from within the belts themselves. Particles inside the belts are sped up by local kicks of energy, buffeting the particles to ever faster speeds, much like a perfectly timed push on a moving swing. Fuente :...

As the telescope door opened on July 17, 2013, IRIS's single instrument began to observe the sun in exceptional detail. IRIS's first images showed a multitude of thin, fibril-like structures that have never been seen before, revealing enormous contrasts in density and temperature occur throughout this region even between...

Princeton University researchers have created "souped up" versions of the calcium-sensitive proteins that for the past decade or so have given scientists an unparalleled view and understanding of brain-cell communication. Fuente : http://www.eurekalert.org/pub_releases/2013-07/pu-...

US Forest Service researchers have identified what may be a key to unraveling some of the mysteries of White Nose Syndrome: The closest known non-disease causing relatives of the fungus that causes WNS. The study by Andrew Minnis and Daniel Lindner, both with the US Forest Service's Northern Research Station in Madison, Wis.,...

Using data from a NASA satellite, a team of scientists led by the Los Alamos National Laboratory in New Mexico and involving the University of Colorado Boulder have discovered a massive particle accelerator in the heart of one of the harshest regions of near-Earth space, a region of super-energetic, charged particles...

By physically acting out the flow of energy, students develop an intuitive understanding of challenging science concepts. Fuente : http://www.eurekalert.org/pub_releases/2013-07/aps...

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

What can survive blazing temperatures of almost 6,000 degrees Fahrenheit without melting? What did not break apart at extreme pressures? What is made by a new process that forms a complex part in just one piece? What takes less than three weeks to go from manufacturing to testing? What can reduce...

NASA scientists have established a new way to use satellites to measure what's occurring inside plants at a cellular level. Plants grow and thrive through photosynthesis, a process that converts sunlight into energy. During photosynthesis, plants emit what is called fluorescence -- light invisible...

NASA scientists and an international team of researchers have found tropical ecosystems can generate significant carbon dioxide when temperatures rise, unlike ecosystems in other parts of the world. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/R...

An image from NASA's Mars Reconnaissance Orbiter released today shows NASA's Curiosity Mars rover and the wheel tracks from its landing site to the "Glenelg" area where the rover worked for the first half of 2013. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/e...

Scientists have announced a nano-enhanced version of a biosensor has detected a single cancer marker protein and even smaller molecules below the mass of all known markers. This achievement sets a new benchmark for the most sensitive limit of detection, and may significantly advance early disease...

Many children reject medicines due to an aversion to bitter taste. As such, bitterness presents a key obstacle to the acceptance and effectiveness of beneficial drugs by children worldwide. A new review addresses this critical problem by highlighting recent advances in the scientific understanding...

In recent decades there has been increased variability in yearly temperature records for large parts of Europe and North America, according to a new study. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/k...

Researchers have warned of an "economic time-bomb" in the Arctic, following a ground-breaking analysis of the likely cost of methane emissions in the region. Economic modelling shows that the methane emissions caused by shrinking sea ice from just one area of the Arctic could come with a global...

A multinational team of scientists has identified a single gene, called Shell, that regulates yield of the oil palm tree. The fruit and seeds of the oil palm are the source of nearly one-half of the supply of edible vegetable oil worldwide, and provide one of the most promising sources of biofuel....

Rabbits can't do it, neither can frogs, but zebrafish and axolotls can and flatworms are true masters of the craft: regeneration. Why some animals can re-grow lost body parts or organs while others cannot remains a big mystery. And even more intriguing to us regeneration-challenged humans is the...

Un grupo de investigadores ha desarrollado láminas electrónicas extrafinas y ultraligeras que podrían servir para producir imperceptibles sensores médicos o placas solares ||| Fuente : http://feedproxy.google.com/~r/materia/noticias/~3...

El impacto de un calentamiento del Ártico podría suponer un coste de 43,5 billones de euros, una cifra que equivale al tamaño global de la economía en 2012. Así lo refleja el informe que investigadores de la Universidad de Cambridge y la Rotterdam School of Management publican esta semana en...

Algunas especies de gusanos planos tienen la capacidad de regenerar cualquier parte de su cuerpo, incluso la cabeza. Ahora tres equipos independientes de investigadores publican en Nature los procesos moleculares que permiten regenerar esta parte esencial del organismo. Fuente :...

La galaxia del Escultor, la más cercana con un boom de formación estelar, ha facilitado a los astrónomos una explicación de cómo este nacimiento masivo puede dejar a las futuras generaciones de estrellas sin combustible para crecer. Gracias a las observaciones de la red de telescopios ALMA se ha...

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