Revealing influenza's truly insidious nature, Whitehead Institute scientists have discovered that the virus is able to infect its host by first killing off the cells of the immune system that are actually best equipped to neutralize the virus. Fuente :...

Scientists report in Nature they have found a novel and unexpected molecular switch that could become a key to slowing some of the ravages of getting older as it prompts blood stem cells to age. Fuente : http://www.eurekalert.org/pub_releases/2013-10/cch...

Scientists have developed a general approach for combining different types of nanoparticles to produce large-scale composite materials. The technique opens many opportunities for mixing and matching particles with different magnetic, optical, or chemical properties to form new, multifunctional...

What happens when the brain recognizes an error? A new study shows that the brains of humans and rats adapt in a similar way to errors by using low-frequency brainwaves in the medial frontal cortex to synchronize neurons in the motor cortex. The finding could be important in studies of mental...

Johns Hopkins researchers used suction to learn that individual "molecular muscles" within cells respond to different types of force, a finding that may explain how cells "feel" the environment and appropriately adapt their shapes and activities. A computer model the researchers developed also lets...

Research led by St. Jude Children's Research Hospital scientists has linked an inherited gene variation to a nearly four-fold increased risk of developing a pediatric acute lymphoblastic leukemia subtype that is associated with a poor outcome. Fuente :...

Large-scale deep re-sequencing reveals cucumber's evolutionary enigma. Fuente : http://www.eurekalert.org/pub_releases/2013-10/bs-...

Researchers at CSHL are using the fruit fly to discover how the brain integrates multiple signals to identify one unique smell. It's work that has broader implication for how flies -- and ultimately, people -- learn. Fuente : http://www.eurekalert.org/pub_releases/2013-10/csh...

Time is a huge impediment when it comes to working together to halt the effects of climate change, new research suggests. Fuente : http://www.eurekalert.org/pub_releases/2013-10/uob...

Patients with cancers driven by the protein KRAS, which are particularly hard to treat, may benefit from small molecules that attach to and disrupt the function of a KRAS-containing protein complex, according to results presented here at the AACR-NCI-EORTC International Conference on Molecular...

The investigational drug AZD9291, a third-generation EGFR inhibitor, showed promise in preclinical studies and provides hope for patients with advanced lung cancers that have become resistant to existing EGFR inhibitors, according to results presented here at the AACR-NCI-EORTC International...

PF-06463922, an investigational drug being developed by Pfizer Inc., has the potential to become a new treatment option for patients who have lung cancer harboring abnormalities in the ALK gene, according to preclinical results presented here at the AACR-NCI-EORTC International Conference on...

LEE011, a small-molecule inhibitor of cyclin-dependent kinases (CDK) 4/6 being developed by Novartis Oncology, showed promising results in drug-resistant melanoma and drug-resistant breast cancer when tested in combination with other targeted therapies, and based on these preclinical results,...

El hallazgo de varios fragmentos fósiles (dos piezas mandibulares) de un primate Microchoerus ha rectificado el conocimiento que tenían los científicos respecto a la fauna de la península ibérica occidental durante el Eoceno superior (hace 37 millones de años). Estas piezas fósiles confirman la......

No es un asteroide porque, al igual que un cometa, tiene cola. Sin embargo, tampoco es un cometa porque su órbita sólo podría realizarla un asteroide. La comunidad científica denomina a esta clase de objetos, de los que apenas se conoce una docena, cometas del cinturón principal (MBC, en su......

Los incendios en zonas urbanas y medios de transporte son comunes porque emplean materiales inflamables; con el fin de reducirlos, el Centro de Innovación Aplicada en Tecnologías Competitivas (CIATEC) obtuvo materiales a base de poliolefinas (termoplásticos) reciclados que tienen propiedades...

“Para poder tener una economía fuerte y empresas competitivas a nivel internacional se requiere de la innovación, y la base de la misma es una buena educación”, enfatizó el director ejecutivo de la Fundación México-Estados Unidos para la Ciencia (FUMEC), Guillermo Fernández de la Garza, durante un...

A senior academic from London's Kingston University has praised the New South Wales emergency services' textbook response to the Sydney bush fires but warned the authorities were ultimately at the mercy of the elements. Dr Neil Thomas, an environmental hazards and disaster management specialist,...

Carla Vilas Boas es mulata, con raíces africanas, indígenas y europeas, como la mayoría de la población de Brasil. Pero dedica mucho tiempo a alisar su pelo crespo, forzada a mirarse en el espejo de la televisión, donde las rubias de ojos claros son el modelo de la mujer brasileña. Vilas Boas, una...

Emergency Medical Service staff are accustomed to responding to emergencies. A study presented today at the Canadian Cardiovascular Congress finds they may be able to prevent many emergencies as well, judging by the preliminary success of a pilot project at a Hamilton building for seniors. Fuente :...

An ethically dubious medical research study from the 1950s and 60s, known as the "Bowery series," foreshadowed and shared commonalities with prostate cancer screening and treatment measures as they are carried out today, argues a physician and historian. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/j...

One of the challenges of understanding cancer is trying to determine the mechanisms that drive metastasis, or the process by which tumor cells are able to spread throughout the body. Researchers describe how melanoma tumors use "phenotype switching" -- changing their outward appearance -- can result in melanoma cells that are...

Europa está recibiendo un inesperado ataque en Armenia por una ley de igualdad de género que para muchos en este país promueve la homosexualidad como un “valor europeo”. La reacción ha sido tan violenta que algunos observadores políticos creen que se la está atizando artificialmente a...

El mundo islámico celebró esta semana una de sus festividades más sagradas: Eid al Adha (Fiesta del Sacrificio), que incluye grandes reuniones familiares, comidas abundantes e intercambio de obsequios. En esta solemnidad, en la que se recuerda la disposición de Ibrahim (en la Biblia, Abraham) a...

"" Many mysteries in art, history and literature can be solved using “forensic” astronomy, including calculating phases of the Moon, determining the positions of the planets and stars, and identifying celestial objects. In addition to helping crack difficult cases, such studies spark our...

Antibiotic resistant pathogens are an emerging, critical human health issue. The World Health Organization (WHO) has declared antibiotic resistance as a top health issue worldwide. Two million Americans are infected each year with diseases resistant to known antibiotics; between ten and fifteen...

While consumption of soda and other sugary drinks among young children in California is starting to decline, a new study released shows an alarming 8 percent spike among adolescents, the biggest consumers of these beverages. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/w...

New article postings for Geology cover glacial erosion and glacial slip; the work of marine organisms in changing the face of Earth; collisional shortening in the Central Alps; changes in sediment transport in Taiwan after typhoon Morakot in 2009; a new type of iron formation, dubbed "fluvial iron...

El decreto del gobierno de Venezuela para controlar la información y “la actividad enemiga interna y externa” apela a conceptos de la doctrina de seguridad nacional, con la que se arroparon durante varias décadas dictaduras militares derechistas de América Latina. El presidente...