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| Life Forms May Have Evolved In Ancient Hot Springs On Mars Posted: 21 Feb 2009 02:00 PM PST Data from the Mars Reconnaissance Orbiter suggest the discovery of ancient springs in the Vernal Crater, sites where life forms may have evolved on Mars, according to a report in Astrobiology. |
| 'Normalizing' Tumor Vessels Leaves Cancer More Benign Posted: 21 Feb 2009 02:00 PM PST New research suggests a counterintuitive new method to make cancer less likely to spread: by normalizing the shape of tumors' blood vessels to improve their oxygen supply. Such a treatment strategy might also boost the efficacy and reduce resistance to available anti-cancer drugs and so-called anti-angiogenic drugs that work by cutting off the growth of new blood vessels. |
| Spread Of Rice Virus Could Be Reduce With Technology Posted: 21 Feb 2009 02:00 PM PST Building on plant virus research started more than 20 years ago, biologists have discovered a technology that reduces infection by the virus that causes Rice Tungro Disease, a limiting factor of rice production in Asia. |
| New Obesity Staging System May Help Doctors Measure Up Posted: 21 Feb 2009 02:00 PM PST A new system proposed by Canadian and US obesity researchers may provide another weapon in the battle against obesity. Scientists have proposed a classification system to help doctors assess and treat overweight patients. |
| Posted: 21 Feb 2009 02:00 PM PST Scientists have sequenced over seventy strains of yeast, the greatest number of genomes for any species, bringing into focus the small branches of Darwin's Tree of Life. |
| Smoking Prevention Campaign Saving Billions In Smoking-related Care Posted: 21 Feb 2009 02:00 PM PST Researchers have estimated that "Truth", the nations' largest youth smoking prevention campaign, saved $1.9 billion or more in health care costs associated with tobacco use. |
| Animals Successfully Relearn Smell Of Kin After Hibernation Posted: 21 Feb 2009 08:00 AM PST Animals can re-establish their use of smell to detect siblings, even following an interruption such as prolonged hibernation. Smell is an important animal survival tool. Female ground squirrel sisters bond for protection and use smell to recognize each other. Animals also need to recognize siblings to avoid inbreeding, which would have a negative effect on their genetic fitness. The research on how animals recognize kin is vital to helping plan conservation programs for endangered species. |
| New Platinum-based Anti-tumor Compound Developed Posted: 21 Feb 2009 08:00 AM PST Researchers have developed a new class of platinum-based anti-tumor drugs that animal studies have shown to be 10 times more effective than current treatments in destroying certain types of lung cancer cells. |
| Simple Method Strengthens Schools, Other Buildings Against Earthquakes Posted: 21 Feb 2009 08:00 AM PST Civil engineers using a specialized laboratory have demonstrated the effectiveness of a simple, inexpensive method to strengthen buildings that have a flaw making them dangerously vulnerable to earthquakes. |
| Diseased Heart Valve Replaced Through Small Chest Incision On 91-Year-Old Patient Posted: 21 Feb 2009 08:00 AM PST When a 91-year-old man was diagnosed with severe blockage of his heart valve -- hardening that is formally known as aortic valve stenosis -- open-heart surgery was out of the question. He'd already survived quadruple bypass while in his 50s, and having lived almost a century,he wasn't a good candidate for heart surgery for many reasons. |
| 'Green' Plastics Could Help Reduce Carbon Footprint Posted: 21 Feb 2009 08:00 AM PST More than 20 million tons of plastic are placed in US landfills each year. Results from a new study suggest that some of the largely petroleum-based plastic may soon be replaced by a nonpolluting, renewable plastic made from plants. Reducing the carbon footprint and the dependence on foreign oil, this new "green" alternative may also provide an additional cash crop for farmers. |
| Sexual Health Promotion Is Low Among People With Serious Mental Illnesses, Despite Higher Risk Posted: 21 Feb 2009 08:00 AM PST A survey of mental health workers found that although 80 percent felt sexual health promotion was an important part of their role, only 30 percent routinely discussed sexual health issues with service users. Most were not aware that people with schizophrenia face a higher HIV risk than the general population. |
| New Silver-based Nanoparticle Ink Could Lead To Better Flexible, Printed Electronics Posted: 21 Feb 2009 02:00 AM PST A new ink, composed of silver nanoparticles, can be used in electronic and optoelectronic applications to create flexible, stretchable and spanning microelectrodes that carry signals from one circuit element to another. The printed microelectrodes can withstand repeated bending and stretching with minimal change in their electrical properties. |
| Cell Injections Accelerate Fracture Healing Posted: 21 Feb 2009 02:00 AM PST Long bone fractures heal faster after injections of bone-building cells. New research has shown that osteoblast cells cultured from a patient's own bone marrow can be injected into the fracture area and can speed the healing process. |
| View Into The Human Body: The Formation Of Cell Organelles Posted: 21 Feb 2009 02:00 AM PST Peroxisomes, multifaceted functional units within cells, fulfil the most diverse of tasks. In human beings, failure of these organelles is fatal. Their biogenesis does not adhere to the standard rules and still remains to be fully clarified. Scientists have identified a new pathway for components of the peroxisomal membrane proteins. The data gained is a significant contribution towards the comprehension of the formation and origin of peroxisomes. |
| IL-2 Immunotherapy Fails To Benefit HIV-infected Individuals Already Taking Antiretrovirals Posted: 21 Feb 2009 02:00 AM PST Providing a synthetic form of the immune system protein interleukin-2 to HIV-infected individuals already taking combination antiretroviral therapy boosts their numbers of CD4+ T cells, the key white blood cells destroyed by HIV, but fails to reduce their risk of HIV-associated opportunistic diseases or death compared with combination antiretroviral therapy alone. |
| Cracking The Species Code For Plants Posted: 21 Feb 2009 02:00 AM PST A recent article searches for one or more short pieces of DNA code that could eventually be used in an automated fashion to reliably identify almost all land plant species. |
| Parents 'Avoid Pregnancy' Rather Than Face Testing Choices Posted: 21 Feb 2009 02:00 AM PST Parents of children with genetic conditions may avoid the need to choose whether to undergo pre-natal testing or to abort future pregnancies by simply avoiding subsequent pregnancy altogether, a study has found. |
| Japanese Corals Change Sexes On The Sea Floor Posted: 20 Feb 2009 08:00 PM PST Trees do it. Bees do it. Even environmentally stressed fish do it. Now biologists have discovered that Japanese sea corals engage in "sex switching" too. |
| Innovative Method To Starve Tumors Posted: 20 Feb 2009 08:00 PM PST Scientists have just discovered a new mechanism that tumors use to stimulate the growth of the blood vessels that feed them. The researchers have also proposed a new way to control this process, which may translate into future therapies. |
| Most Road Salt Is Making It Into Lakes And Rivers Posted: 20 Feb 2009 08:00 PM PST New research has revealed that road salt used throughout the winter is making the state's lakes and rivers saltier, which could affect aquatic life and drinking water. The research indicates that better training of snow plow drivers and more judicious use of road salt could help lessen the impact and save the state money. |
| Model Of Pre-exposure Prophylaxis Against HIV Forecasts Benefits, Potential Cost-effectiveness Posted: 20 Feb 2009 08:00 PM PST For every two people who begin treatment for HIV infection globally, five others become newly infected. Therefore, preventing new HIV infections is the foremost strategy for ending the HIV/AIDS epidemic. |
| First Crystal Structure Of An Intermediate Particle In Virus Assembly Created Posted: 20 Feb 2009 08:00 PM PST Scientists been able to produce the first crystal structure of a virus particle caught in the midst of assembling its impenetrable outer protein coat. |
| Educational Video Games Effective In Classroom If Certain Criteria Are Met Posted: 20 Feb 2009 08:00 PM PST Playing and studying are not incompatible activities. A team of researchers looked into integrating virtual graphic adventures into online education platforms and analyzes the educational and technological aspects that lead to success. |
| Comet Lulin: 'Green Comet' Fast Approaching Earth Posted: 20 Feb 2009 05:00 PM PST Space scientists are keeping a close eye on a 'green comet' fast approaching the Earth - reaching its nearest point to us on February 24. Comet Lulin will streak by the earth within 38 million miles -- 160 times farther than the moon -and is expected to be visible to the naked eye. Discovered only a year ago, the comet gains its green color from poisonous cyanogen and diatomic carbon gases in its atmosphere. |
| Clot-buster Boosts Survival, Decreases Disability For Deadly Subset Of Stroke Posted: 20 Feb 2009 05:00 PM PST Patients who got an experimental clot-busting treatment for a particularly lethal form of stroke were not only dramatically more likely to survive but also continued to shed lingering disabilities six months later. |
| Bacteria In Urinary Tract Infections Caught Making Burglar's Tools Posted: 20 Feb 2009 05:00 PM PST Bacteria that cause urinary tract infections make more tools for stealing from their host than friendly versions of the same bacteria found in the gut, researchers have found. The tools help the bad bacteria to survive and reproduce. But they also provide a potential way to target them without adversely affecting the good strains. |
| Gaza Strip Families Give First Clue To Condition Causing Blindness And Tooth Decay Posted: 20 Feb 2009 05:00 PM PST Scientists studying an inherited condition resulting in blindness and crumbling teeth have found a single defective gene can affect both eye function and normal tooth development. |
| Posted: 20 Feb 2009 05:00 PM PST Physicists have discovered unusual electronic properties in a material that has potential to improve solar cell efficiency and computer chip design. The material has potential to improve solar cell efficiency and computer chip design. Researchers determined that a crystal made of bismuth, iron and oxygen can act as a reversible diode, and that diodes made from this material generate current when light falls on them. The material appears sensitive to light at the blue end of the spectrum, a property that could increase solar cell efficiency. |
| Number Of Fast-food Restaurants In Neighborhood Associated With Stroke Risk Posted: 20 Feb 2009 05:00 PM PST Research suggests the more fast-food restaurants in a neighborhood, the higher the stroke risk for area residents. The study did not prove a cause-and-effect relationship between eating fast foods and increased stroke risk. |
| How Fat or Fit Were Dinosaurs? Scientists Use Laser Imaging Posted: 20 Feb 2009 02:00 PM PST Scientists used laser imaging to investigate how fat -- or fit -- T. rex and his fellow dinosaurs were. Researchers found that a small T. rex could have weighed anywhere between 5.5 and 7 tonnes, while their larger specimen (Stan) might have weighed as much as 8 tonnes. |
| Revolutionary New Model For Alzheimer's Disease Posted: 20 Feb 2009 02:00 PM PST Is there something missing from the conventional theory that Alzheimer's is a disease of toxicity -- based on the accumulation of sticky amyloid plaques in the brain? New research focuses on Alzheimer's Disease as a nerve signaling disorder that occurs when there's an imbalance in the making and breaking of memories. The discovery of a naturally occurring brain protein, Netrin-1, offers a new target for therapeutics. |
| Stroke: Innovative Team Approach Brings Man Back From The Dead Twice Posted: 20 Feb 2009 02:00 PM PST He was in the throes of a heart attack--the kind so bad it's called "the widow maker." PATCAR was at the rescue, a state-of-the-art response that required three medical teams-from ambulance to cath lab-to all work from the same playbook in precision time. Alive and well, he cheated death twice in one day. |
| Can Breastfeeding Reduce Multiple Sclerosis Relapses? Posted: 20 Feb 2009 02:00 PM PST Women who have multiple sclerosis may reduce their risk of relapses after pregnancy if they breastfeed their babies, according to a new study. |
| How Complex Movements Of Enzymes Make Fat Posted: 20 Feb 2009 02:00 PM PST A groundbreaking study has revealed in great detail how enzymes in the cell cooperate to make fat. |
| Violent Media Numb Viewers To The Pain Of Others Posted: 20 Feb 2009 02:00 PM PST Violent video games and movies make people numb to the pain and suffering of others, according to a research report published in Psychological Science. |
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