Friday, August 21, 2009

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


Scientists Discover Bioluminescent 'Green Bombers' From The Deep Sea

Posted: 21 Aug 2009 11:00 AM PDT

In the latest proof that the oceans continue to offer remarkable findings and much of their vastness remains to be explored, scientists have discovered a unique group of worms that live in the depths of the ocean. Orbs lobbed by the mysterious worms burst into brilliant light, thought to be a defensive measure.

Genetically Engineered Bacteria Are Sweet Success Against Inflammatory Bowel Disease

Posted: 21 Aug 2009 11:00 AM PDT

For the first time, scientists have used a genetically engineered "friendly" bacterium to deliver a therapy. The treatment is for bowel disorders such as inflammatory bowel disease for which there is no cure. The bacterium Bacteroides ovatus activates a protein when exposed to a specific sugar, xylan. The therapy has been proven to work in animals with colitis, one of the major forms of inflammatory bowel disease.

Blood Test Can Detect Brain Damage In Amateur Boxers

Posted: 21 Aug 2009 11:00 AM PDT

A blood test can now be used to detect brain damage in amateur boxers. Deterioration of nerve cells seems to occur even after a two-month break from boxing.

Progesterone Leads To Inflammation, Scientists Find

Posted: 21 Aug 2009 11:00 AM PDT

Scientists have found exposure to the hormone progesterone activates genes that trigger inflammation in the mammary gland. This progesterone-induced inflammation may be a key factor in increasing the risk of breast cancer.

Scrubbing Sulfur: New Process Removes Sulfur Components, Carbon Dioxide From Power Plant Emissions

Posted: 21 Aug 2009 11:00 AM PDT

Researchers have developed a reusable organic liquid that can pull harmful gases such as carbon dioxide or sulfur dioxide out of industrial emissions from power plants. The process could directly replace current methods and allow power plants to capture double the amount of harmful gases in a way that uses no water, less energy and saves money.

Family Quarrels Can Promote Headaches In Children, Study Finds

Posted: 21 Aug 2009 11:00 AM PDT

Family quarrels and a lack of free time can promote headaches in children, according to researchers in Germany.

Earliest Complex Organisms Fed By Absorbing Ocean Buffet, Geobiologists Propose

Posted: 21 Aug 2009 08:00 AM PDT

The oldest complex life forms -- living in nutrient-rich oceans more than 540 million years ago -- likely fed by osmosis, new research shows.

Hello Wearable Kidney, Goodbye Dialysis Machine

Posted: 21 Aug 2009 08:00 AM PDT

Researchers are developing a Wearable Artificial Kidney for dialysis patients.

Research Supports Calls To Study Health Benefits Of Nitrate, Nitrite

Posted: 21 Aug 2009 08:00 AM PDT

Researchers are challenging health standards that consider nitrates and nitrites in food to be harmful. New research suggests that although there are negative health effects associated with the use of nitrogen-based fertilizers and excessive nitrates in groundwater, nitrates and nitrites -- as they occur in plants -- may actually provide health benefits.

Warning Over Codeine Use After Tonsillectomy

Posted: 21 Aug 2009 08:00 AM PDT

A report warns the use of codeine to treat pain following a tonsillectomy could prove fatal for some children. A Canadian doctor zeroed in on the danger after investigating the death of a two-year-old boy following a relatively easy operation to remove his tonsils.

Holes Poked In Hubbard Model, Could Help Solve Enigma Of High-Temperature Superconductors

Posted: 21 Aug 2009 08:00 AM PDT

New research has literally and figuratively poked holes in single-band Hubbard physics -- a model that has been used to predict and calculate the behavior of high-temperature superconductors for 20 years.

Romantic, Candle-lit Dinners: An Unrecognized Source Of Indoor Air Pollution

Posted: 21 Aug 2009 08:00 AM PDT

Burning candles made from paraffin wax -- the most common kind used to infuse rooms with romantic ambiance, warmth, light and fragrance -- is an unrecognized source of exposure to indoor air pollution, including the known human carcinogens, scientists are reporting.

Painless 'Microneedle' Patch May Take Sting Out Of Shots

Posted: 21 Aug 2009 05:00 AM PDT

Scientists report the design of a painless patch that may someday render hypodermic needles -- as well as annual flu shots -- a thing of the past. Lined with tiny "microneedles," these patches could make treatment of diabetes and a wide range of other diseases safer, more effective and less painful. Used as tiny hypodermic needles, they could improve treatment of macular degeneration and other diseases of the eye.

New Approach To Wound Healing May Be Easy On Skin, But Hard On Bacteria

Posted: 21 Aug 2009 05:00 AM PDT

Researchers describe an experimental approach to wound healing that could take advantage of silver's anti-bacterial properties, while sidestepping the damage silver can cause to cells needed for healing.

Why Some Antibiotic Drugs Pack Such A Punch

Posted: 21 Aug 2009 05:00 AM PDT

By studying the intricate mechanisms at work in protein production, scientists have discovered why certain kinds of antibiotics are so effective. In doing so, they also have discovered how one protein protects against cell death, shedding light on a natural cancer-fighting process.

Moms-to-be Warned Over Use Of Fetal Heart Rate Monitors

Posted: 21 Aug 2009 05:00 AM PDT

Moms-to-be are being advised not to use personal monitors to listen to their baby's heartbeat at home over fears that they may lead to delays in seeking help for reduced fetal movements.

Novel Polymer Could Improve Protein-based Drugs

Posted: 21 Aug 2009 05:00 AM PDT

A new method for attaching a large protective polymer molecule to a protein appears to improve protein drugs significantly.

'Rich Interaction' May Make Computers A Partner, Not A Product

Posted: 21 Aug 2009 05:00 AM PDT

Researchers are pioneering the concept of "rich interaction" -- computers that want to communicate with, learn from and get to know you better as a person.

Genetic Link Between Physical Pain And Social Rejection Found

Posted: 21 Aug 2009 02:00 AM PDT

Psychologists have determined for the first time that a gene linked with physical pain sensitivity is associated with social pain sensitivity as well. The research gives weight to the common notion that rejection "hurts" by showing that a gene that regulates the body's most potent painkillers are involved in socially painful experiences too.

Increase In Visceral Fat During Menopause Linked With Testosterone

Posted: 21 Aug 2009 02:00 AM PDT

In middle-aged women, visceral fat, more commonly called belly fat, is known to be a significant risk factor for cardiovascular disease, but what causes visceral fat to accumulate? The culprit is likely not age, as is commonly believed, but levels of active testosterone during the menopausal transition, according to new research.

Climate Change Could Deepen Poverty In Developing Countries, Study Finds

Posted: 21 Aug 2009 02:00 AM PDT

Urban workers could suffer most from climate change as the cost of food drives them into poverty, according to a new study that quantifies the effects of climate on the world's poor populations. Researchers examined the potential economic influence of adverse climate events, such as heat waves, drought and heavy rains, on those in 16 developing countries. Urban workers in Bangladesh, Mexico and Zambia were found to be the most at risk.

Post-treatment Pain In Head And Neck Cancer Patients Linked To Recurrence, Lower Survival Rate

Posted: 21 Aug 2009 02:00 AM PDT

Patients with head and neck cancer who experience a higher level of post-treatment pain appear to have a lower survival rate than those who experience little or no post-treatment pain, according to a new report.

Controlling Red Imported Fire Ants Two Ways

Posted: 21 Aug 2009 02:00 AM PDT

Two separate strategies for reducing the spread of red imported fire ants (RIFA) are being combined by scientists as part of a strategy that could potentially add to the arsenal against this spreading pest.

Alcohol Advertising Reaching Too Many Teens On Cable TV, Researchers Say

Posted: 21 Aug 2009 02:00 AM PDT

A new study has found a striking correlation between teenage viewership and the frequency of alcohol advertising on cable television. The findings show that ads for beer, spirits and "alcopop" aired much more frequently when more teens were watching.

With Nothing To Guide Their Way, People Really Do Walk In Circles

Posted: 20 Aug 2009 11:00 PM PDT

With nothing to guide their way, people attempting to walk a straight course through unfamiliar territory really do end up walking in circles, according to a new report. Although that belief has pervaded popular culture, there has been no scientific evidence to back it up until now, according to the researchers.

Watching Stem Cells Repair The Human Brain

Posted: 20 Aug 2009 11:00 PM PDT

Researchers have been able to track mesenchymal stem cells through the human brain using in-vivo MRI, which gives new information on the viability of these cells and their benefits to damaged tissue.

Ocean-drilling Expedition Cites New Evidence Related To Origin And Evolution Of Seismogenic Faults

Posted: 20 Aug 2009 11:00 PM PDT

New research about what triggers earthquakes shows that splay fault activity varies through time.

Corticosteroid Injections May Be Helpful To Manage Vocal Fold Polyps Without Surgery

Posted: 20 Aug 2009 11:00 PM PDT

Corticosteroid injections appear to offer an alternative to surgery for treating polyps on the vocal cords, according to a new study.

Nanophysics: Serving Up Buckyballs On A Silver Platter

Posted: 20 Aug 2009 11:00 PM PDT

New measurements conducted on C60 molecules (carbon Buckyballs) adhered to silver substrates push the limits of surface science.

Need For Improved Toy Safety, New Research Shows

Posted: 20 Aug 2009 11:00 PM PDT

Toy makers need to urgently review their safety tests, say scientists, after showing that children as young as three can have the bite force of the average dog. Findings from research in the United Kingdom could be used to improve toy safety and prevent injury and even deaths from choking among the under fives.

Plastics In Oceans Decompose, Release Hazardous Chemicals, Surprising New Study Says

Posted: 20 Aug 2009 08:00 PM PDT

In the first study to look at what happens over the years to the billions of pounds of plastic waste floating in the world's oceans, scientists are reporting that plastics -- reputed to be virtually indestructible -- decompose with surprising speed and release potentially toxic substances into the water.

Study Supports DNA Repair-blocker Research In Cancer Therapy

Posted: 20 Aug 2009 08:00 PM PDT

Scientists have uncovered the mechanism behind a promising new approach to cancer treatment: damaging cancer cells' DNA with potent drugs while simultaneously preventing the cells from repairing themselves. The findings help explain the promising results being seen in clinical trials of compounds that force cancer cells with genetic damage to self-destruct instead of "resting" while their DNA undergoes repairs.

Dark Energy From The Ground Up: Make Way For BigBOSS

Posted: 20 Aug 2009 08:00 PM PDT

Several ways have been proposed to examine dark energy, in hopes of finding out just what it is. One of them, "supernovae" for short, certainly works: it's how dark energy was discovered in the first place. Other independent techniques, such as weak gravitational lensing and baryon acoustic oscillation, also promise great power but are as yet unproven. To measure the expansion history of the universe, the design chosen for the Joint Dark Energy mission will use three techniques -- supernovae, weak lensing, and baryon acoustic oscillation -- but it will emphasize baryon acoustic oscillation. Good science, but many scientists think it can be done better, cheaper, and more dependably from the ground -- by BigBOSS.

Labor Induction Need Not Increase Cesarean Risk

Posted: 20 Aug 2009 08:00 PM PDT

Contrary to a belief widely held by obstetricians, inducing labor need not increase a woman's risk for cesarean section delivery in childbirth, scientists have found.

Researchers Boost Production Of Biofuel That Could Replace Gasoline

Posted: 20 Aug 2009 08:00 PM PDT

Engineers have found a way to double the production of the biofuel butanol, which might someday replace gasoline in automobiles. The process improves on the conventional method for brewing butanol in a bacterial fermentation tank.

Detecting Bias In The Reporting Of Clinical Trials

Posted: 20 Aug 2009 08:00 PM PDT

Researchers in the United Kingdom are developing new methods for detecting distorted medical statistics.

A Look Into The Hellish Cradles Of Suns And Solar Systems

Posted: 20 Aug 2009 05:00 PM PDT

New images delve into the heart of a cosmic cloud, called RCW 38, crowded with budding stars and planetary systems. There, young, titanic stars bombard fledgling suns and planets with powerful winds and blazing light, helped in their devastating task by short-lived, massive stars that explode as supernovae. In some cases, this energetic onslaught cooks away the matter that may eventually form new solar systems. Scientists think that our own solar system emerged from such a dramatic environment.

Genetic Variations Linked To Brain Size

Posted: 20 Aug 2009 05:00 PM PDT

Using advanced brain imaging and genomics technologies, researchers show for the first time that natural variations in a specific gene influence brain structure. By establishing this link, the researchers have opened the door to a range of potential research efforts that could reveal gene variations responsible for a number of neurological conditions such as autism.

Life And Death In The Living Brain: Recruitment Of New Neurons Slows When Old Brain Cells Kept From Dying

Posted: 20 Aug 2009 05:00 PM PDT

Like clockwork, brain regions in many songbird species expand and shrink seasonally in response to hormones. Now, for the first time, neurobiologists have interrupted this natural "annual remodeling" of the brain and have shown that there is a direct link between the death of old neurons and their replacement by newly born ones in a living vertebrate.

Fatigue Related To Radiotherapy May Be Caused By Inflammation

Posted: 20 Aug 2009 05:00 PM PDT

Patients who experience fatigue during radiotherapy for breast or prostate cancer may be reacting to activation of the proinflammatory cytokine network, a known inflammatory pathway, according to new research.

Highest Ever Winter Water Temperatures Recorded Off Tasmania

Posted: 20 Aug 2009 05:00 PM PDT

Tasmania's east coast is recording its highest-ever winter water temperatures of more than 13 C -- up to 1.5 C above normal -- due to a strengthening of an ocean current originating north of Australia.

Student's 'Green' Use For Online Social Networking

Posted: 20 Aug 2009 05:00 PM PDT

A computer science student has created a new Facebook application that uses the social networking website for monitoring home energy consumption. The WattsUp application will also allow people to assess their carbon dioxide emissions.

Breakthrough Uses Light To Manipulate Cell Movement

Posted: 20 Aug 2009 02:00 PM PDT

Scientists have developed a technique that uses light to control protein behavior in cells and animals simply by shining light on the cells where they want the protein to be active.

New Targets For Treatment Of Invasive Breast Cancer Discovered

Posted: 20 Aug 2009 02:00 PM PDT

Scientists have shown for the first time that a tiny piece of RNA appears to play a major role in the development of invasive breast cancer and identified a gene that appears to inhibit invasive breast cancer.

Seeing The Cosmos Through 'Warm' Infrared Eyes

Posted: 20 Aug 2009 02:00 PM PDT

NASA's Spitzer Space Telescope has taken its first shots of the cosmos since warming up and starting its second career. The infrared telescope ran out of coolant on May 15, 2009, more than five-and-half-years after launch, and has since warmed to a still-frosty 30 Kelvin (about minus 406 Fahrenheit). New images demonstrate that the observatory remains a powerful tool for probing the dusty universe.

Dermatologist Skin Examinations Detect More, Thinner Skin Cancers Than Patients Identify Themselves

Posted: 20 Aug 2009 02:00 PM PDT

Most melanomas detected in a general-practice dermatology clinic were found by dermatologists during full-body skin examinations of patients who had come to the clinic for different complaints, according to a new study. In addition, cancers detected by dermatologists were thinner and more likely to be in situ (only on the outer layer of skin) than were cancers detected by patients.

Toward Limitless Energy: National Ignition Facility Focus Of Symposium

Posted: 20 Aug 2009 02:00 PM PDT

Chemists are preparing to play an important but often unheralded role in determining the success of one of the largest and most important scientific experiments in history — next year's initial attempts at the National Ignition Facility (NIF) to produce the world's first controlled nuclear fusion reaction. If successful in taming the energy source of the sun, stars, and of the hydrogen bomb, scientists could develop a limitless new source of producing electricity for homes, factories, and businesses.

Mind Control Can Make You A Better Surgeon

Posted: 20 Aug 2009 02:00 PM PDT

Researchers have found that trainee eye surgeons can significantly improve their surgical skills by regulating their own brainwave activity, using a process called neurofeedback.

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