ScienceDaily: Latest Science News |
- Migrating sea turtles have magnetic sense for longitude
- Immune molecule regulates brain connections
- Drier conditions projected to accelerate dust storms in the southwest
- Given prior to loud noise, two drugs protect hearing better than one
- Powerful microscope reveals chemical structure of fossils
- Advanced degrees add up to lower blood pressure
- Subtle shifts, not major sweeps, drove human evolution
- Nanomedicine: Gene fuelled transporter causes breast cancer cells to self-destruct
- Collisions of protein machines cause DNA replication derailment
- Potential treatment for Chikungunya discovered
- Mystery about recognition of unfolded proteins solved: The lock shapes the key
- Most medical devices recalled because of serious risks did not undergo clinical trials
- Brain's 'reward' center also responds to bad experiences
- Why chemotherapy causes more infertility in women than in men
- Shining a light on trypanosome reproduction
- Ultrasound fusion imaging provides comparable accuracy for bone, soft tissue tumors
- Running on a faster track: Researchers develop scheduling tool to save time on public transport
- Stress and tension do not stop fertility treatment from working, study finds
- Markedly higher vitamin D intake needed to reduce cancer risk, researchers say
- Novel methods for improved breast cancer survival
- Meningitis: Neisseria meningitidis disseminates itself by sending out 'scouts'
- Hip, thigh implants can raise bone fracture risk in children
- Turning forests into fuel: Promise and limits of biomass energy in Northeastern U.S.
- Strong link found between victimization, substance abuse
- Asymmetric supernovae: Not all stellar explosions expand spherically
- Home urine test measures insulin production in diabetes
- Bisphenol A exposures lower in Canadians compared to Americans
- Scientists find gene responsible for color patterns in mice
- Discovery of killer cells has potential for targeted cancer therapies
- Arctic environment during an ancient bout of natural global warming
- Heparin a key role player in allergy and inflammatory reactions
- Reducing one's 'nitrogen footprint': New Web-based tool helps people make sustainable living choices
- High-quality care associated with lower cost in trauma
- Protein and microRNA block cellular transition vital to metastasis
- Clues about grasshopper population explosions
- Hashimoto’s thyroiditis can affect quality of life even when thyroid gland function is normal
- Floating solar panels: Solar installations on water
- Planning and visualization lead to better food habits
- First aid training for children under five years old
| Migrating sea turtles have magnetic sense for longitude Posted: 28 Feb 2011 08:00 AM PST From the very first moments of life, hatchling loggerhead sea turtles have an arduous task. They must embark on a transoceanic migration, swimming from the Florida coast eastward to the North Atlantic and then gradually migrating over the course of several years before returning again to North American shores. Now, researchers have figured out how the young turtles find their way.  |
| Immune molecule regulates brain connections Posted: 28 Feb 2011 08:00 AM PST The number of connections between nerve cells in the brain can be regulated by an immune system molecule, according to a new study.  |
| Drier conditions projected to accelerate dust storms in the southwest Posted: 28 Feb 2011 08:00 AM PST Drier conditions projected to result from climate change in the Southwest will likely reduce perennial vegetation cover and result in increased dust storm activity in the future, according to a new study.  |
| Given prior to loud noise, two drugs protect hearing better than one Posted: 28 Feb 2011 08:00 AM PST Whether on a battlefield, in a factory or at a rock concert, noise-induced hearing loss is one of the most common hazards people face. Researchers have identified a low-dose, two-drug cocktail that reduces hearing loss in mice when given before they are exposed to loud noise.  |
| Powerful microscope reveals chemical structure of fossils Posted: 28 Feb 2011 08:00 AM PST Surprising new research shows that, contrary to conventional belief, remains of chitin-protein complex--structural materials containing protein and polysaccharide--are present in abundance in fossils of arthropods from the Palaeozoic era.  |
| Advanced degrees add up to lower blood pressure Posted: 28 Feb 2011 08:00 AM PST An analysis of thousands of people shows that the more years of higher education people pursue, the lower their blood pressure readings will be for decades afterward, especially among women. Increasing educational access, argues the lead author, could improve public health.  |
| Subtle shifts, not major sweeps, drove human evolution Posted: 28 Feb 2011 05:00 AM PST The most popular model used by geneticists for the last 35 years to detect the footprints of human evolution may overlook more common subtle changes, a new study finds. A computational analysis reveals that selective sweeps may have been rare, with little influence on the history of our species.  |
| Nanomedicine: Gene fuelled transporter causes breast cancer cells to self-destruct Posted: 28 Feb 2011 05:00 AM PST Scientists have shown that they can deliver a gene directly into breast cancer cells causing them to self-destruct, using an innovative, miniscule gene transport system, according to new research.  |
| Collisions of protein machines cause DNA replication derailment Posted: 28 Feb 2011 05:00 AM PST Scientists have published results that will forever change the way researchers view the interplay between gene expression, DNA replication and the prevention of DNA damage.  |
| Potential treatment for Chikungunya discovered Posted: 28 Feb 2011 05:00 AM PST Researchers have discovered two new fully human monoclonal antibodies which could battle Chikungunya, a disease that currently has no available vaccine or specific treatment.  |
| Mystery about recognition of unfolded proteins solved: The lock shapes the key Posted: 28 Feb 2011 05:00 AM PST Proteins normally recognize each other by their specific 3-D structure. If the key fits in the lock, a reaction can take place. However there are reactions at the onset of which the key does not really have a shape. Chemists have now shown how this might work.  |
| Most medical devices recalled because of serious risks did not undergo clinical trials Posted: 28 Feb 2011 05:00 AM PST Most medical devices recently recalled by the Food and Drug Administration because of very serious risks were initially approved through an expedited process or were exempt from regulatory review, according to a new article.  |
| Brain's 'reward' center also responds to bad experiences Posted: 28 Feb 2011 02:00 AM PST The so-called reward center of the brain may need a new name, say scientists who have shown it responds to good and bad experiences. The finding may help explain the "thrill" of thrill-seeking behavior or maybe just the thrill of surviving it, according to scientists.  |
| Why chemotherapy causes more infertility in women than in men Posted: 28 Feb 2011 02:00 AM PST For a long time a relationship between infertility and chemotherapeutic agents has been assumed. Now, the mechanism has been elucidated. Mainly women are affected because the quality control in the oocytes is different from male germ cells. As biosicentists in Germany have found out, tetramer and dimer structures in the p53 protein family play a key role.  |
| Shining a light on trypanosome reproduction Posted: 28 Feb 2011 02:00 AM PST Compelling visual evidence of sexual reproduction in African trypanosomes, single-celled parasites that cause major human and animal diseases, has been found.  |
| Ultrasound fusion imaging provides comparable accuracy for bone, soft tissue tumors Posted: 28 Feb 2011 02:00 AM PST Biopsies using ultrasound fusion imaging for detecting bone and soft tissue cancers are safe, effective and just as accurate as conventional biopsy methods, according to a new study.  |
| Running on a faster track: Researchers develop scheduling tool to save time on public transport Posted: 28 Feb 2011 02:00 AM PST Researchers have developed the "Service Oriented Timetable," an application to intelligently manage the variables involved in metropolitan train travel. In simulations on the Israel Railway, the application shaved 12 minutes off a typical 60-minute journey.  |
| Stress and tension do not stop fertility treatment from working, study finds Posted: 28 Feb 2011 02:00 AM PST Women undergoing IVF or other assisted reproduction therapy can be reassured that emotional distress caused by their infertility or other life events will not prevent the treatment from working, according to new research.  |
| Markedly higher vitamin D intake needed to reduce cancer risk, researchers say Posted: 27 Feb 2011 11:00 PM PST Researchers have reported that markedly higher intake of vitamin D is needed to reach blood levels that can prevent or markedly cut the incidence of breast cancer and several other major diseases than had been originally thought.  |
| Novel methods for improved breast cancer survival Posted: 27 Feb 2011 11:00 PM PST A quarter of all women who suffer from breast cancer are at risk of metastasis – a recurrence of the cancer. In recent years, researchers have developed a technique that can identify in advance which patients belong to this risk group. Within the next two years the method will be tested in Swedish hospitals. In the future, the technique may also be used in hospitals in other countries.  |
| Meningitis: Neisseria meningitidis disseminates itself by sending out 'scouts' Posted: 27 Feb 2011 11:00 PM PST Although, in the majority of cases, the localized presence of Neisseria meningitidis in the throat has no consequence, it can sometimes lead to meningitis or septicaemia. Scientists have recently discovered how this bacterium disseminates, leaving the throat to pass into the bloodstream.  |
| Hip, thigh implants can raise bone fracture risk in children Posted: 27 Feb 2011 11:00 PM PST Children with hip and thigh implants designed to help heal a broken bone or correct other bone conditions are at risk for subsequent fractures of the very bones that the implants were intended to treat, according to new research.  |
| Turning forests into fuel: Promise and limits of biomass energy in Northeastern U.S. Posted: 27 Feb 2011 11:00 PM PST In targeted applications, the heat generated by locally-grown biomass can reduce dependence on fossil fuels and support local economies," said Dr. Charles D. Canham, a forest ecologist at the Cary Institute and co-author of the report. "But each forested landscape is different, and regional variation in forest conditions and energy infrastructure means there is no one-size-fits-all solution."  |
| Strong link found between victimization, substance abuse Posted: 27 Feb 2011 11:00 PM PST A strong link between victimization experiences and substance abuse has been discovered by researchers.  |
| Asymmetric supernovae: Not all stellar explosions expand spherically Posted: 27 Feb 2011 05:00 PM PST Stars are balls of glowing gas, with a nearly spherical shape. Accordingly, one would expect that when some stars explode as supernovae at the end of their lives, the resulting colossal fireballs should share this spherical symmetry. However, recent investigations are revealing that some of these events are not round. New data gathered at Calar Alto Observatory reinforce this surprising finding.  |
| Home urine test measures insulin production in diabetes Posted: 27 Feb 2011 05:00 PM PST A simple home urine test has been developed which can measure if patients with type 1 and type 2 diabetes are producing their own insulin. The urine test replaces multiple blood tests in hospital and can be sent by post as it is stable for up to three days at room temperature. Avoiding blood tests will be a particular advantage for children.  |
| Bisphenol A exposures lower in Canadians compared to Americans Posted: 27 Feb 2011 05:00 PM PST Health Canada's declaration that bisphenol A is a health hazard makes it unique in the world, but it must now follow through with legislation to protect people from exposure. That's the conclusion of a new analysis that found concentrations of bisphenol A in Canadians are lower than for Americans, although the reason for the difference is unknown.  |
| Scientists find gene responsible for color patterns in mice Posted: 27 Feb 2011 11:00 AM PST Scientists are moving closer to answering some age-old questions. How did the leopard get its spots? How did the zebra get its stripes? The answer may be a gene called Agouti, which the scientists have found governs color patterns in deer mice, the most widespread mammal in North America.  |
| Discovery of killer cells has potential for targeted cancer therapies Posted: 27 Feb 2011 11:00 AM PST Scientists have made an important discovery concerning how fledgling cancer cells self-destruct, which has the potential of impacting on future cancer therapies.  |
| Arctic environment during an ancient bout of natural global warming Posted: 27 Feb 2011 11:00 AM PST Scientists are unraveling the environmental changes that took place around the Arctic during an exceptional episode of ancient global warming. Around 56 million years ago there was a period of global warming called the Paleocene-Eocene Thermal Maximum, during which global sea surface temperatures increased by approximately 5°C. The warming of the oceans led to profound ecological changes, including the widespread extinction of many types of foraminifera, tiny single-celled organisms with distinctive shells.  |
| Heparin a key role player in allergy and inflammatory reactions Posted: 27 Feb 2011 11:00 AM PST Heparin plays a key role in allergic and inflammatory reactions driven by mast cells, scientists show. The study sheds some new light on the biological function of heparin.  |
| Reducing one's 'nitrogen footprint': New Web-based tool helps people make sustainable living choices Posted: 27 Feb 2011 11:00 AM PST People who want to eat healthy and live sustainably have a new way to measure their impact on the environment: a Web-based tool that calculates an individual's "nitrogen footprint."  |
| High-quality care associated with lower cost in trauma Posted: 27 Feb 2011 11:00 AM PST High-quality hospitals deliver lower-cost care to trauma patients, according to new research. The study found high-quality hospitals have death rates that are 34 percent lower, while spending nearly 22 percent less on trauma patient care than average-quality hospitals, suggesting high quality can coexist with lower cost. The reason is not clear, though.  |
| Protein and microRNA block cellular transition vital to metastasis Posted: 27 Feb 2011 05:00 AM PST Like a bounty hunter returning escapees to custody, a cancer-fighting gene converts organ cells that change into highly mobile stem cells back to their original, stationary state, researchers report.  |
| Clues about grasshopper population explosions Posted: 27 Feb 2011 05:00 AM PST Biologists are examining what can limit grasshopper populations and the role played by grasshoppers in prairie ecosystems.  |
| Hashimoto’s thyroiditis can affect quality of life even when thyroid gland function is normal Posted: 27 Feb 2011 05:00 AM PST Hashimoto's thyroiditis (HT), an inflammatory disorder of the thyroid, is the most common cause of hypothyroidism, but a study has suggested that even when thyroid function is normal, HT may increase symptoms and decrease quality of life.  |
| Floating solar panels: Solar installations on water Posted: 27 Feb 2011 05:00 AM PST Most of the solar energy systems on the market today bare two major weaknesses: they require vast land areas in order to be built, and the costs related to solar cells fabrication and maintenance are high. A new technology is about to overcome these challenges and many more: floating solar power plants.  |
| Planning and visualization lead to better food habits Posted: 27 Feb 2011 05:00 AM PST If you want to improve the way you eat, the best way to do so is to both make an action plan and visualize yourself carrying it out, according to researchers.  |
| First aid training for children under five years old Posted: 26 Feb 2011 09:00 PM PST One of the reasons often given by people for not attempting first aid in emergency situations is a lack of confidence and a fear of doing more harm than good. Yet a Norwegian study on four and five year olds shows that even young children are able to learn and perform basic first aid.  |
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