Despite widespread fascination, the world's oldest ocean predators have long been a genetic mystery. The first deep dive into a great white shark's genetic code has fished up big surprises. Cornell researchers have discovered that many of the endangered great white shark's proteins involved in an array of different functions --...

Scientists from NIST and Sandia National Laboratories have added something new to a family of engineered, high-tech materials called metal-organic frameworks: the ability to conduct electricity. Conductive MOFs have the potential for use in a variety of applications including sensors for detecting gases and toxic substances....

Researchers at Vanderbilt University Medical Center and the University of Alberta in Canada have identified a biomarker for a cellular switch that accurately predicts which prostate cancer patients are likely to have their cancer recur or spread. Fuente : http://www.eurekalert.org/pub_releases/2013-12/vum...

Women with moderate to severe menstrual cramps may find relief in a class of erectile dysfunction drugs, according to a team of researchers led by Penn State College of Medicines Richard Legro. Fuente : http://www.eurekalert.org/pub_releases/2013-12/ps-...

How do you measure the pain of a patient who can't communicate? A Rhode Island Hospital researcher studied an observational pain scale in cardiac surgery patients, and found that the Critical-Care Pain Observation Tool provided an accurate measure of a patient's pain level. The study by Sandra Linde, RN, is the first study...

A human ancestor characterized by "robust" jaw and skull bones was a muscular creature and more adaptive to its environment than previously thought, scientists have discovered.Researchers found a partial skeleton dated to 1.34 million years (Paranthropus boisei) in north Tanzania. The bones suggest the creature was more...

Imetelstat, a novel telomerase inhibiting drug, has been found to induce morphologic, molecular and clinical remissions in some patients with myelofibrosis a Mayo Clinic study has found. The results were presented today at the 2013 American Society of Hematology Annual Meeting in New Orleans. Fuente :...

Planetary instruments from NASA's Goddard Space Flight Center in Greenbelt, Md., hit the trifecta on Dec. 4, running three experiments of the same kind at different places in space. Fuente : http://www.eurekalert.org/pub_releases/2013-12/nsf...

Scientists from Rice University and the University of Bremen's Center for Marine Environmental Sciences in Germany have combined cutting-edge experimental techniques and computer simulations to find a new way of predicting how water dissolves crystalline structures like those found in natural stone and cement. Fuente :...

Una generación después de independizarse de la Unión Soviética, las aldeas de Kirguistán son sitios destartalados y arruinados, escenarios de la desesperación. Los jóvenes capaces se van a la capital o a Rusia en busca de cualquier empleo. Pero todo es diferente para un pequeño caserío de montaña...

A researcher has found that African-American college students are aware of the benefits of breast-feeding for infants, yet some still are hesitant about breast-feeding future children. Evidence revealed a lack of public acceptance toward breast-feeding may influence this hesitation. Fuente :...

A new study using observations from a novel instrument provides the best look to date at magnetic fields at the heart of gamma-ray bursts, the most energetic explosions in the universe. An international team of astronomers has glimpsed the infrastructure of a burst's high-speed jet. Fuente :...

Biologists have observed two crocodilian species -- muggers and American alligators -- using twigs and sticks to lure birds, particularly during nest-building time. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/g...

A new study shows that poor sleep quality is strongly associated with mood disturbance and lower quality of life among people with extreme obesity. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/J...

After capturing the first brain images of two alert, unrestrained dogs last year, researchers have confirmed their methods and results by replicating them in an experiment involving 13 dogs. The research showed that most of the dogs had a positive response in the caudate region of the brain when...

More than one in three twin births and three of four births of triplets or more in the United States arise from fertility treatments, according to new estimates published. Although in-vitro fertilization (IVF) practices have improved to produce fewer triplets or higher-order births than at peak,...

Astronomers have identified the glowing wreck of a star that exploded a mere 2,500 years ago — the blink of an eye in astronomical terms. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/o...

An analysis of the femur of one of the oldest human ancestors reveals the six-million-year-old “Millenium Man” was bipedal but lived in the trees. The research could provide additional insight to the origins of human bipedalism. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/C...

La novena reunión ministerial de la Organización Mundial del Comercio (OMC) en Bali, Indonesia, es una batalla abierta entre países que procuran redes de seguridad social para cientos de millones de pobres y los que insisten en medidas para que el Sur en desarrollo facilite las importaciones. Estas...

Las áreas protegidas son una caja fuerte de la biodiversidad y de su adaptación al cambio climático, pero en un país como Cuba, agobiado por su débil economía, los esfuerzos para ampliarlas y sostenerlas pasan medio desapercibidos. “Constituyen un reservorio de biodiversidad genética de muchas...

NASA's Cassini spacecraft has obtained the highest-resolution movie yet of a unique six-sided jet stream, known as the hexagon, around Saturn's north pole. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/G...

After reviewing nearly 100 research studies, scientists say accelerated sea-level rise certainly will increase the flooding and property damage triggered by tropical cyclones — commonly known as hurricanes in the Atlantic and Northern Pacific. The researchers stressed the importance of a holistic...

Mary Ann Liebert, Inc., publishers announced the publication of the World Stem Cell Report 2013, a special supplement to the peer-reviewed journal Stem Cells and Development. Fuente : http://www.alphagalileo.org/ViewItem.aspx?ItemId=1...

Un equipo de investigadores estadounidenses ha utilizado por primera vez una técnica de copia de ADN para cuantificar un tipo de linfocitos presente en tumores. Este método, cuyo estudio se ha publicado hoy en la revista Science Translational Medicine, puede utilizarse para medir la persistencia...

Left to themselves, coastal wetlands can withstand rapid levels of sea-level rise. But humans could be sabotaging some of their best defenses, according to a new review. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/E...

La colaboración científica entre el Equipo de Atapuerca y el Instituto Max Planck de Antropología Evolutiva (Alemania) ha hecho posible el hallazgo del ADN humano más antiguo de la historia, según publica la revista Nature. Este material genético está datado en unos 400.000 años –el anterior era de...

Le niveau trophique détermine la position d'une espèce dans la chaîne alimentaire. Bien que ce niveau trophique soit un indice connu pour la majeure partie des espèces terrestres et marines, cet indice n'avait jamais été calculé pour l'Homme. La revue PNAS publie cette semaine les résultats d'une...

Like a car with a front and back end, a steering mechanism and an engine to push it forward, cancer cells propel themselves through normal tissues and organs to spread cancer throughout the body. Researchers at Mayo Clinic in Florida, however, have managed to turn these cells into shapes like a...

"" We see the city, we hear the city, but, above all, we smell the city. In a landmark new book, Dr. Victoria Henshaw, Lecturer in Urban Design and Planning at the University of Sheffield, UK, discusses the use of smell in good urban design. Urban Smellscapes: Understanding and Designing City Smell...