ScienceDaily: Latest Science News

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• Love Songs Of Bowhead Whales: Whales Sings With 'More Than One Voice'
• Maternal, Paternal Genes' Tug-of-war May Last Well Into Childhood
• New Microbe Strain Makes More Electricity, Faster
• Stress Signals Link Pre-existing Sickness With Susceptibility To Bacterial Infection
• From Graphene To Graphane, Now The Possibilities Are Endless
• Risk Factors Of Self-induced Vomiting And Other Disordered Eating Behaviors In Overweight Youth
• Sharpest Views Of Star Betelgeuse Reveal How Supergiant Stars Lose Mass
• Targeted Therapy Delivers Chemo Directly To Ovarian Cancer Cells
• Newly Discovered Faults Illuminate Earthquake Hazard Along San Andreas
• Hepatitis C Infection: Treatment Options Equally Effective, Likelihood Of Success Known Early On
• How Children View And Treat Their Peers With Undesirable Characteristics
• 'Artificial Golgi' May Provide New Insight Into Key Cell Structure
• Scientists Program Blood Stem Cells To Become Vision Cells
• Miniaturized Lasers Can Emit Quantum Light
• Previously Unseen Effects Of Protein Buildup In Diabetic Baboons' Pancreases Found
• Consider The Oyster (and Ocean Farming)
• Little Lifesavers: Kids Capable Of CPR
• Scientists Uncork Potential Secret Of Red Wine's Health Benefits
• Ovarian Cancer Tests 'Woefully Ineffective' According To Researchers
• Large Trees Declining In Yosemite National Park, U.S.
• Receptor Also Active Inside The Cell
• Magnetic Curie Valve Developed That Does Not Require Power
• Algebra Adds Value To Mathematical Biology Education
• Why We Learn More From Our Successes Than Our Failures
• Blood Pressure Targets: Aiming Lower Offers No Benefit, Review Finds
• New Insect On Balearic Islands
• Bacterial Vaginosis Treatments: Probiotics Can Increase Effectiveness Of Some Antibiotic Therapies
• Threats To California's Cordell Bank Marine Sanctuary
• Errors In Diagnosis Of Depression Lead To Over And Under Diagnosis In Primary Care
• Human Language And Dolphin Movement Patterns Show Similarities In Brevity
• Yeast Cancer Model For Mapping Cancer Genes
• Stem Cells: Environmental Factors Instruct Lineage Choice Of Blood Progenitor Cells
• New Method For Detecting Nitroxyl Will Boost Cardiac Drug Research
• New York's Ash Trees Threatened By Newly Found Beetle
• Mom And Dad As Financial Advisors

Love Songs Of Bowhead Whales: Whales Sings With 'More Than One Voice' Posted: 03 Aug 2009 02:00 PM PDT It is now generally accepted that the bowhead whale is the longest lived mammal on the planet, with a lifespan of over 200 years. But that it can sing with "more than one voice" and that it changes its repertoire from year to year is news. This behavior is unique among baleen whales and is a newly discovered phenomenon.

Maternal, Paternal Genes' Tug-of-war May Last Well Into Childhood Posted: 03 Aug 2009 02:00 PM PDT An analysis of rare genetic disorders in which children lack some genes from one parent suggests that maternal and paternal genes engage in a subtle tug-of-war well into childhood, and possibly as late as the onset of puberty.

New Microbe Strain Makes More Electricity, Faster Posted: 03 Aug 2009 02:00 PM PDT In their most recent experiments with Geobacter, the sediment-loving microbe whose hairlike filaments help it to produce electric current from mud and wastewater, scientists supervised the evolution of a new strain that dramatically increases power output per cell and overall bulk power. It also works with a thinner biofilm than earlier strains, cutting the time to reach electricity-producing concentrations on the electrode.

Stress Signals Link Pre-existing Sickness With Susceptibility To Bacterial Infection Posted: 03 Aug 2009 02:00 PM PDT A new study shows that the stress signaling protein, AMPK, facilitates infection by harmful bacteria. AMPK is chronically elevated in some types of diseases, suggesting that this protein may cause patients with these diseases to be more susceptible to noxious infection.

From Graphene To Graphane, Now The Possibilities Are Endless Posted: 03 Aug 2009 02:00 PM PDT Ever since graphene was discovered in 2004, this one-atom thick, super strong, carbon-based electrical conductor has been billed as a "wonder material" that some physicists think could one day replace silicon in computer chips. But graphene, which consists of carbon atoms arranged in a honeycomb lattice, has a major drawback when it comes to applications in electronics – it conducts electricity almost too well, making it hard to create graphene-based transistors that are suitable for integrated circuits. Now a condensed-matter physicist explains how the discovery of graphane, an insulating equivalent of graphene, may prove more versatile still.

Risk Factors Of Self-induced Vomiting And Other Disordered Eating Behaviors In Overweight Youth Posted: 03 Aug 2009 02:00 PM PDT Researchers have identified factors that may increase overweight adolescents' risk of engaging in extreme weight control behaviors such as self-induced vomiting, the use of diet pills, laxatives and diuretics, as well as binge eating.

Sharpest Views Of Star Betelgeuse Reveal How Supergiant Stars Lose Mass Posted: 03 Aug 2009 11:00 AM PDT Using different state-of-the-art techniques on ESO's Very Large Telescope, two independent teams of astronomers have obtained the sharpest ever views of the supergiant star Betelgeuse. They show that the star has a vast plume of gas almost as large as our Solar System and a gigantic bubble boiling on its surface. These discoveries provide important clues to help explain how these mammoths shed material at such a tremendous rate.

Targeted Therapy Delivers Chemo Directly To Ovarian Cancer Cells Posted: 03 Aug 2009 11:00 AM PDT With a novel therapeutic delivery system, scientists have successfully targeted a protein that is over-expressed in ovarian cancer cells. Using the EphA2 protein as a molecular homing mechanism, chemotherapy was delivered in a highly selective manner in preclinical models of ovarian cancer.

Newly Discovered Faults Illuminate Earthquake Hazard Along San Andreas Posted: 03 Aug 2009 11:00 AM PDT Researchers have discovered new faults that reveal how earthquake-induced stress is transferred below Southern California's Salton Sea.

Hepatitis C Infection: Treatment Options Equally Effective, Likelihood Of Success Known Early On Posted: 03 Aug 2009 11:00 AM PDT Results of a long-awaited study of 3,070 American adults show that treatment with either of the two standard antiviral drug therapies is safe, and offers the best way for people infected with hepatitis C to prevent liver scarring, organ failure and death.

How Children View And Treat Their Peers With Undesirable Characteristics Posted: 03 Aug 2009 11:00 AM PDT A new study looks at how children perceive and interact with peers who have various undesirable characteristics, such as being overweight or aggressive. The researchers' study explored children's perceptions of the ability of the peer to control or change such traits.

'Artificial Golgi' May Provide New Insight Into Key Cell Structure Posted: 03 Aug 2009 08:00 AM PDT Scientists are reporting assembly of the first functioning prototype of an artificial Golgi organelle. That key structure inside cells helps process and package hormones, enzymes, and other substances that allow the body to function normally.

Scientists Program Blood Stem Cells To Become Vision Cells Posted: 03 Aug 2009 08:00 AM PDT Researchers were able to program bone marrow stem cells to repair damaged retinas in mice, suggesting a potential treatment for one of the most common causes of vision loss in older people. The success implies that blood stem cells taken from bone marrow can be programmed to restore a variety of cells and tissues, including ones involved in cardiovascular disorders.

Miniaturized Lasers Can Emit Quantum Light Posted: 03 Aug 2009 08:00 AM PDT For more than 100 years it has been known that light comes in small packages, the so-called photons. The discovery of this quantization of the light field has opened up a new field of physics -- quantum optics. In the sixties one of its pioneers, the Nobel Prize winner Roy Glauber, suggested to characterize light sources according to the sequence of their emitted photons. But the realization of this idea has been very limited up to now.

Previously Unseen Effects Of Protein Buildup In Diabetic Baboons' Pancreases Found Posted: 03 Aug 2009 08:00 AM PDT Undesirable protein deposits in the islets of Langerhans, the area of the pancreas that makes glucose-controlling hormones, are increased even when blood sugar levels are barely above normal, according to a new study.

Consider The Oyster (and Ocean Farming) Posted: 03 Aug 2009 08:00 AM PDT There are cynics who see only catastrophic answers to Earth's population explosion: War and pestilence come to mind. Then there are those who look a little deeper. Not even two feet deep, to be precise, into the placid tidal pools dotting the world's coastlines. It is on a coastal flat in the Pacific Northwest, that marine biologists are pinning their hopes on the quest for bigger and faster-growing oysters.

Little Lifesavers: Kids Capable Of CPR Posted: 03 Aug 2009 08:00 AM PDT Nine-year-olds can and should learn CPR. A study of 147 schoolchildren has shown that, although the smallest may lack the requisite strength, the knowledge of how to perform basic life support is well retained by young children.

Scientists Uncork Potential Secret Of Red Wine's Health Benefits Posted: 03 Aug 2009 05:00 AM PDT Scientists have unraveled a mystery that has perplexed scientists since red wine was first discovered to have health benefits: How does resveratrol control inflammation? New research not only explains resveratrol's one-two punch on inflammation, but also show how it -- or a derivative -- can be used to treat potentially deadly inflammatory disease, such as appendicitis, peritonitis and systemic sepsis.

Ovarian Cancer Tests 'Woefully Ineffective' According To Researchers Posted: 03 Aug 2009 05:00 AM PDT Current diagnostic tests for ovarian cancer are woefully ineffective for early detection of the disease, say researchers. A new study finds that in order to make a significant dent in the mortality rate for the deadly cancer, the tests would have to be able to detect tumors of less than 1 cm in diameter, or about 200-times smaller in mass than those currently used to assess potential new tests.

Large Trees Declining In Yosemite National Park, U.S. Posted: 03 Aug 2009 05:00 AM PDT Large trees have declined in Yosemite National Park during the 20th century, and warmer climate conditions may play a role. The number of large-diameter trees in the park declined 24 percent between the 1930s and 1990s. Scientists compared the earliest records of large-diameter trees densities from 1932--1936 to the most recent records from 1988--1999.

Receptor Also Active Inside The Cell Posted: 03 Aug 2009 05:00 AM PDT Researchers have demonstrated that hormones can also activate their receptors inside the cell. Until now, cell surface expression of hormone receptors was considered a necessity for their ability to transduce hormonal signals from the outside of the cell to the inside. This discovery may allow a significant improvement for the treatment of patients suffering from one of the many disorders that are caused by failure of a particular hormone receptor to reach the cell surface.

Magnetic Curie Valve Developed That Does Not Require Power Posted: 03 Aug 2009 05:00 AM PDT Scientists have invented a three-way valve that controls the flow through a magnetic material which is attracted by an external magnet when the liquid reaches a certain temperature.

Algebra Adds Value To Mathematical Biology Education Posted: 03 Aug 2009 05:00 AM PDT As mathematics continues to become an increasingly important component in undergraduate biology programs, a more comprehensive understanding of the use of algebraic models is needed by the next generation of biologists to facilitate new advances in the life sciences, according to researchers.

Why We Learn More From Our Successes Than Our Failures Posted: 03 Aug 2009 02:00 AM PDT Scientists have created for the first time a unique snapshot of the learning process that shows how single cells change their responses in real time as a result of information about what is the right action and what is the wrong one.

Blood Pressure Targets: Aiming Lower Offers No Benefit, Review Finds Posted: 03 Aug 2009 02:00 AM PDT Aiming for lower than standard blood pressure targets offers no known clinical benefit, according to a new study. In a systematic review of the evidence, researchers found that using antihypertensive drugs to reduce blood pressure below the 140/90 mm Hg standard was not associated with any reduction in death rates or serious morbidity.

New Insect On Balearic Islands Posted: 03 Aug 2009 02:00 AM PDT After 10 years of biochemical and molecular analysis of the Tyrrhenoleuctra plecoptera that live in the Western Mediterranean, Spanish and Italian scientists have now demonstrated that one of the insect populations of this group is a distinct and, therefore, new species.

Bacterial Vaginosis Treatments: Probiotics Can Increase Effectiveness Of Some Antibiotic Therapies Posted: 03 Aug 2009 02:00 AM PDT Antimicrobial treatments for bacterial vaginosis are effective, but taking lactobacillus tablets alongside metronidazole antibiotic therapy increases effectiveness over taking this antibiotic alone, according to a new review. The researchers also concluded that intravaginal lactobacillus was as effective as oral metronidazole, although they did note unexplained drop-outs from the trials.

Threats To California's Cordell Bank Marine Sanctuary Posted: 03 Aug 2009 02:00 AM PDT A new report on the health of Cordell Bank National Marine Sanctuary indicates that the overall condition of the sanctuary's marine life and habitats is fair to good, but identifies several emerging threats to sanctuary resources.

Errors In Diagnosis Of Depression Lead To Over And Under Diagnosis In Primary Care Posted: 03 Aug 2009 02:00 AM PDT A meta-analysis of more than 50,000 patients has shown that general practitioners have great difficulty separating those with and without depression, with substantial numbers of missed and misidentified.

Human Language And Dolphin Movement Patterns Show Similarities In Brevity Posted: 02 Aug 2009 11:00 PM PDT Two researchers have shown for the first time that the law of brevity in human language, according to which the most frequently-used words tend to be the shortest, also extends to other animal species. The scientists have shown that dolphins are more likely to make simpler movements at the water surface.

Yeast Cancer Model For Mapping Cancer Genes Posted: 02 Aug 2009 11:00 PM PDT Researchers have devised a scheme for identifying genes in yeast that could lead to the identification of new cancer genes in humans.

Stem Cells: Environmental Factors Instruct Lineage Choice Of Blood Progenitor Cells Posted: 02 Aug 2009 11:00 PM PDT Scientists have developed a new bioimaging method for observing the differentiation of hematopoietic progenitor cells (HPC) at the single-cell level. With this method the researchers were able to prove for the first time that not only cell-intrinsic mechanisms, but also external environmental factors such as growth factors can control HPC lineage choice directly. The findings provide an essential building block for understanding the molecular mechanisms of hematopoiesis and are an important prerequisite for optimizing therapeutic stem cell applications.

New Method For Detecting Nitroxyl Will Boost Cardiac Drug Research Posted: 02 Aug 2009 11:00 PM PDT Scientists have developed a new research tool in the pursuit of heart medications based on the compound nitroxyl by identifying unique chemical markers for its presence in biological systems.

New York's Ash Trees Threatened By Newly Found Beetle Posted: 02 Aug 2009 11:00 PM PDT For the first time, researchers have reported the sighting of the emerald ash borer -- an ash-destroying beetle -- in New York state.

Mom And Dad As Financial Advisors Posted: 02 Aug 2009 11:00 PM PDT Why are so many students deep in debt before they finish college, only to take on more debt as they begin their careers? The answer may be found by looking at the social forces that shape the attitudes and behaviors of today's youth -- forces influencing them in ways that will determine their financial success or failure as adults.

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