There's no peak in sight -- fitness peak, that is -- for the bacteria in Richard Lenski's Michigan State University lab.Lenski, MSU Hannah Distinguished Professor of Microbiology and Molecular Genetics, has been running his evolutionary bacteria experiment for 25 years, generating more than 50,000...

Nursing leaders from 38 children's hospitals, led by Patricia Hickey, vice president of critical care and cardiovascular services at Boston Children's Hospital, demonstrated that nursing education and experience significantly impact outcomes for patients who underwent cardiac surgery. The...

A University of Colorado Cancer Center study recently published in the Journal of the American Medical Association: Dermatology shows that a handful of academic journals have successfully leveraged social media to reach many times the readers of the journals themselves. But the majority of journals have yet to embrace social...

Researchers at the University of California, San Diego School of Medicine have used genetic engineering of human induced pluripotent stem cells to specifically and precisely parse the roles of a key mutated protein in causing familial Alzheimer's disease, discovering that simple loss-of-function does not contribute to the...

Massachusetts General Hospital investigators have used a new sequencing method to identify a group of genes used by the brain's immune cells -- called microglia -- to sense pathogenic organisms, toxins or damaged cells that require their response. Identifying these genes should lead to better understanding of the role of...

Evolution does not have foresight. But organisms with a greater capacity to evolve may fare better in changing environments. This raises the question: Does evolution favor characteristics that increase a species' ability to evolve?For several years, biologists have attempted to provide evidence that natural selection has acted...

Un estudio desvela el efecto de las corrientes marinas sobre las larvas del preciado crustáceo. Las conclusiones del trabajo, realizado pora la Universidad de Oviedo en colaboración con el Centro de Experimentación Pesquera del Principado de Asturias, tienen implicación directa...

Scientists have discovered the oldest big cat fossil ever found -- which fills in a significant gap in the fossil record. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/d...

It’s not every day that fishermen catch the world’s largest fish species in their nets, but this is what recently happened in Indonesia’s Karimunjawa National Park, according to the Wildlife Conservation Society. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/U...

Las operaciones de ayuda en las áreas azotadas por el tifón Haiyán en Filipinas se aceleraron este miércoles 13, pero los sobrevivientes todavía reciben cantidades mínimas de agua, alimentos y suministros médicos. “Necesitamos ayuda. No sucede nada, no hemos comido desde la anoche”, dijo entre...

Increased spirituality in teens undergoing substance abuse treatment is associated with greater likelihood of abstinence (as measured by toxicology screens), increased positive social behaviors, and reduced narcissism, according to a study. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/-...

Scientists are unraveling the mechanisms behind a little-known marine worm that produces a dazzling bioluminescent display in the form of puffs of blue light released into seawater. Found around the world in muddy environments, from shallow bays to deeper canyons, the light produced by the "parchment tube worm" is secreted as...

Stingrays swim through water with such ease that researchers are studying how their movements could be used to design more agile and fuel-efficient unmanned underwater vehicles. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/z...

Researchers studying more effective ways to convert woody plant matter into biofuels have identified fundamental forces that change plant structures during pretreatment processes used in the production of bioenergy. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/3...

A natural shift to stronger warm El Niño events in the Pacific Ocean might be responsible for a substantial portion of the global warming recorded during the past 50 years, according to new research. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/q...

Recent work promises to overcome one of the leading public health threats of our time. In a groundbreaking study, the team presents a novel approach to treat and eliminate methicillin resistant Staphylococcus aureus, or MRSA, a potent bacterium whose resistance to antibiotics has kept it one step ahead of researchers. That...

Cats that live outdoors in the city do their darnedest to steer clear of urban coyotes, a new study says. The cats cause less damage to wildlife in urban green spaces, such as city parks and nature preserves, because of that dodging. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/Q...

Researchers have identified a rain forest microbe that feasts on the lignin in plant leaf litter, making it a potential ally for the cost-effective production of advanced biofuels. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/K...

New research sheds light on the role of gut bacteria on the maturation of the immune system and provides evidence supporting the use of butyrate as therapy for inflammatory bowel diseases like Crohn’s disease. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/8...

Investigadores de la Universidad de Barcelona, el Observatorio Europeo Austral (ESO) y la Universidad de Curtin (Australia) han determinado la existencia de partículas subatómicas llamadas bariones en un jet o chorro de materia. En concreto  en el que sale del agujero negro presente en el...

Die Funktion bestimmter Proteine im Prozess der Genregulation, der sogenannten Argonautenproteine (Ago), haben Biowissenschaftler der Universität Heidelberg untersucht. Sie sind der Frage nachgegangen, warum nur das humane Ago2, nicht aber das eng verwandte Ago3 beim Menschen in der Lage ist, Gene zielgerichtet und direkt...

Bioscientists at Heidelberg University have studied the function of certain proteins, known as Argonaute (Ago) proteins, in the process of gene regulation. They sought to understand why only the Ago2 protein is able to target and directly turn off genes in humans, while the closely related Ago3 protein is not. Using a new...

The first step in developing a cost-effective micro sensor for long-term monitoring of ocean acidification has been achieved by a team of scientists and engineers. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/k...

Los nueve primeros meses del año, de enero a septiembre, constituyeron el séptimo período más cálido jamás registrado en el mundo, junto con 2003. Las temperaturas de la superficie del océano y de la tierra se situaron en aproximadamente 0,48 °C por encima de la media del período 1961-1990, según...

Los países de la región africana de los Grandes Lagos avanzan muy poco en un plan internacional de certificación para evitar la exportación de “minerales de sangre”. Las iniciativas internacionales más recientes consiguieron evitar que grupos armados de Ruanda, República Democrática del Congo...

Chile afrontará el domingo 17 sus sextas elecciones generales desde el retorno a la democracia, con el desafío de encontrar una salida a la crisis de representatividad que emergió en 2011, producto de su desigual distribución de la riqueza y del poder. Según el Centro de Estudios Públicos, la...

El profesor del Departamento de Medicina Clínica de la Universidad Miguel Hernández (UMH) de Elche Félix Gutiérrez ha participado en un estudio internacional que ha demostrado que una nueva terapia para el VIH/SIDA es más eficaz y tiene menos efectos secundarios que los tratamientos empleados hasta ahora. Las conclusiones de...

El proyecto SizingSUDOE analiza 130 parámetros del cuerpo humano para completar el estudio antropométrico que actualizará las tallas de la población masculina española. Los resultados se utilizarán para impulsar la competitividad del sector textil europeo. El patronaje actual data de los años 70....

El proyecto SizingSUDOE analiza 130 parámetros del cuerpo humano para completar el estudio antropométrico que actualizará las tallas de la población masculina española. Los resultados se utilizarán para impulsar la competitividad del sector textil europeo. El patronaje actual data de los años 70....