ScienceDaily: Latest Science News

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• Inbred Bumblebees Less Successful Due To 'Inefficient' Males
• Airway Cells Use 'Tasting' Mechanism To Detect And Clear Harmful Substances
• Technology Improves Salmon Passage At Hydropower Dams
• Progressive Resistance Strength Training Helps Older People In Daily Life
• Ancient Fossils Shed Light On Anatomical Changes Accompanying Evolution Of First Land Vertebrates
• Early Detection And Quick Response Are Key To Defense Against Anthrax Attack
• Magnetic Field On Bright Star Vega
• Possible Association Between Agent Orange Exposure And Increased Risk Of Developing Ischemic Heart Disease Or Parkinson's Disease For Vietnam Veterans
• Weight Determines Future Cognitive Development Of Children Born Very Premature, Study Suggests
• Best Heart Disease And Stroke Treatments For Patients With Diabetes Found With New Tool
• Optimistic Future For Agriculture Predicted
• One In Six Public Health Workers Unlikely To Respond In Pandemic Flu Emergency
• Students Embed Stem Cells In Sutures To Enhance Healing
• New System May Allow Xenon Use To Protect Brain In Critically Ill Newborns
• 'Ballooning' Spiders Grounded By Infection
• Breast Cancer Prognosis
• Oceanography: Low Summer Iron Availability Limits Biological Production In The High-latitude North Atlantic
• Oprah, Luke Skywalker And Maradona: New Study Investigates How Our Brains Respond To Them
• Mutation Causing One Type Of Male Infertility Found
• Combustion Simulation: Digital Fireworks
• Global Ocean Surface Temperature Warmest On Record For June
• Coral Bleaching Likely In Caribbean
• Scientists Identify Weevil As Biocontrol For Invasive Garlic Mustard

Inbred Bumblebees Less Successful Due To 'Inefficient' Males Posted: 26 Jul 2009 02:00 PM PDT Declining bumblebee populations are at greater risk of inbreeding, which can trigger a downward spiral of further decline. Researchers have provided the first proof that inbreeding reduces colony fitness under natural conditions by increasing the production of reproductively inefficient 'diploid' males.

Airway Cells Use 'Tasting' Mechanism To Detect And Clear Harmful Substances Posted: 26 Jul 2009 02:00 PM PDT The same mechanism that helps you detect bad-tasting and potentially poisonous foods may also play a role in protecting your airway from harmful substances, according to a new study. The findings could help explain why injured lungs are susceptible to further damage.

Technology Improves Salmon Passage At Hydropower Dams Posted: 26 Jul 2009 02:00 PM PDT Acoustic tags and numerical river models are two technologies that are helping improve salmon passage at the Columbia Basin's hydroelectric dams. An average of 76 percent of juvenile Chinook salmon that pass through the lower 100 miles of the Snake River and its three hydroelectric dams survived the trek in the spring of 2008, according to a joint study between PNNL and the U.S. Army Corps of Engineers' Portland District.

Progressive Resistance Strength Training Helps Older People In Daily Life Posted: 26 Jul 2009 02:00 PM PDT Progressive resistance strength training not only helps older adults become stronger but also makes their everyday life easier, a new review suggests.

Ancient Fossils Shed Light On Anatomical Changes Accompanying Evolution Of First Land Vertebrates Posted: 26 Jul 2009 02:00 PM PDT Long before mammals, birds, and even dinosaurs roamed the Earth, the first four-legged creatures made their first steps onto land. These early land vertebrates varied considerably in size and shape.

Early Detection And Quick Response Are Key To Defense Against Anthrax Attack Posted: 26 Jul 2009 02:00 PM PDT A large attack on a major metropolitan area with airborne anthrax could affect more than a million people, necessitating their treatment with powerful antibiotics. A new study finds that in order for a response to be effective, quick detection and treatment are essential, and any delay beyond three days would overwhelm hospitals with critically ill people.

Magnetic Field On Bright Star Vega Posted: 26 Jul 2009 08:00 AM PDT The first detection of a magnetic field on the bright star Vega has been made. Astronomers clearly observe the magnetically-induced effect in the spectrum of Vega, thereby showing that the star possesses a magnetic field, something unknown so far.

Possible Association Between Agent Orange Exposure And Increased Risk Of Developing Ischemic Heart Disease Or Parkinson's Disease For Vietnam Veterans Posted: 26 Jul 2009 08:00 AM PDT A new report from the Institute of Medicine finds suggestive but limited evidence that exposure to Agent Orange and other herbicides used during the Vietnam War is associated with an increased chance of developing ischemic heart disease and Parkinson's disease for Vietnam veterans. The report is the latest in a congressionally mandated series by the IOM that every two years reviews the evidence about the health effects of these herbicides and a type of dioxin -- TCDD -- that contaminated some of the defoliants.

Weight Determines Future Cognitive Development Of Children Born Very Premature, Study Suggests Posted: 26 Jul 2009 08:00 AM PDT Researchers are carrying out an assessment of the physical neuropsychological characteristics of children born before 32 weeks' gestation or whose weight is lower than 1500 grams (3 lbs. 5oz.) -- very premature. The results obtained so far reveal that the decisive variable for the existence of a reversible or irreversible brain damage is the baby's weight at birth, rather than the time of gestation.

Best Heart Disease And Stroke Treatments For Patients With Diabetes Found With New Tool Posted: 26 Jul 2009 08:00 AM PDT Researchers have developed a computer model that medical doctors can use to determine the best time to begin using statin therapy in diabetes patients to help prevent heart disease and stroke.

Optimistic Future For Agriculture Predicted Posted: 26 Jul 2009 08:00 AM PDT Dramatic price fluctuations, increasing demand, the food vs. fuel debate, and other events of the past year may have food producers wondering which way is up. Despite these recent uncertainties, 'up' is precisely the direction one expert believes agriculture is headed for at least the next 10 years.

One In Six Public Health Workers Unlikely To Respond In Pandemic Flu Emergency Posted: 26 Jul 2009 08:00 AM PDT Approximately 1 in 6 public health workers said they would not report to work during a pandemic flu emergency regardless of its severity, according to a new survey. The new study suggests ways for improving the response of the public health workforce.

Students Embed Stem Cells In Sutures To Enhance Healing Posted: 26 Jul 2009 02:00 AM PDT Biomedical engineering students have demonstrated a practical way to embed a patient's adult stem cells in the surgical thread used to repair serious orthopedic injuries such as ruptured tendons. The goal is to enhance healing and reduce the likelihood of re-injury.

New System May Allow Xenon Use To Protect Brain In Critically Ill Newborns Posted: 26 Jul 2009 02:00 AM PDT Breathing xenon gas can help protect the infant brain from damage caused by oxygen deprivation, but the xenon's high cost and scarcity has precluded its widespread use. A newly developed "closed circuit system" may make xenon feasible, safe, and cost efficient for use in protecting the brains of critically ill infants, according to a new study.

'Ballooning' Spiders Grounded By Infection Posted: 26 Jul 2009 02:00 AM PDT Money spiders infected with Rickettsia bacteria are less likely to 'balloon' -- that is, to use their silk as sails to catch gusts of wind and travel long distances. Researchers suggest that it may be in the bacteria's interests to ground the spiders and that this reduction in dispersal could reduce gene flow and impact on reproductive isolation within the meta-population.

Breast Cancer Prognosis Posted: 26 Jul 2009 02:00 AM PDT Scientists have identified a stromal marker for breast cancer progression.

Oceanography: Low Summer Iron Availability Limits Biological Production In The High-latitude North Atlantic Posted: 26 Jul 2009 02:00 AM PDT Scientists have demonstrated an unexpected role of iron in regulating biological production in the high-latitude North Atlantic. Their findings have important implications for our understanding of ocean-climate interactions.

Oprah, Luke Skywalker And Maradona: New Study Investigates How Our Brains Respond To Them Posted: 26 Jul 2009 02:00 AM PDT New research reveals how visual and auditory information converges into the firing of single neurons.

Mutation Causing One Type Of Male Infertility Found Posted: 24 Jul 2009 09:00 PM PDT A genetic mutation that lies behind one type of male infertility has been discovered. The discover may provide a new approach to help some couples that have been unsuccessful in IVF treatments, and could potentially lead to the development of a male contraceptive pill.

Combustion Simulation: Digital Fireworks Posted: 24 Jul 2009 09:00 PM PDT Researchers have simulated autoignition in a turbulent flow using a supercomputer with up to 65,000 processors in one of the largest reactive flow simulations to date. The results could help to develop better models and reduce the high cost of real experiments.

Global Ocean Surface Temperature Warmest On Record For June Posted: 24 Jul 2009 09:00 PM PDT The world's ocean surface temperature was the warmest on record for June, breaking the previous high mark set in 2005, according to a preliminary analysis by NOAA. Additionally, the combined average global land and ocean surface temperature for June was second-warmest on record. The global records began in 1880.

Coral Bleaching Likely In Caribbean Posted: 24 Jul 2009 09:00 PM PDT Scientists say conditions are favorable for significant coral bleaching and infectious coral disease outbreaks in the Caribbean, especially in the Lesser Antilles. Similar conditions may develop in Gulf of Mexico and Central Pacific. The forecast is based on the July NOAA Coral Reef Watch outlook, which expects continued high water temperatures through October 2009.

Scientists Identify Weevil As Biocontrol For Invasive Garlic Mustard Posted: 24 Jul 2009 09:00 PM PDT A promising biocontrol agent for garlic mustard, one of the most problematic invaders of temperate forests in North America, has been identified.

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