ScienceDaily

Syndicate content ScienceDaily: Latest Science News
Breaking science news and articles on global warming, extrasolar planets, stem cells, bird flu, autism, nanotechnology, dinosaurs, evolution -- the latest discoveries in astronomy, anthropology, biology, chemistry, climate & environment, computers, engineering, health & medicine, math, physics, psychology, technology, and more -- from the world's leading universities and research organizations.
URL: http://www.sciencedaily.com/news/
Updated: 1 hour 15 min ago

Theory Of Sun's Role In Formation Of Solar System Questioned

0 sec ago
A strange mix of oxygen found in a stony meteorite that exploded over Pueblito de Allende, Mexico nearly 40 years ago has puzzled scientists ever since. Small flecks of minerals lodged in the stone and thought to date from the beginning of the solar system have a pattern of oxygen types, or isotopes, that differs from those found in all known planetary rocks, including those from Earth, its Moon and meteorites from Mars.
Categories: ข่าววิทย์

Link Between Obesity, Type 2 Diabetes And Neurodegeneration Found

0 sec ago
Obesity and Type 2 Diabetes Mellitus can contribute to mild neurodegeneration with features common with Alzheimer's disease -- the first study to show that obesity can cause neurodegeneration.
Categories: ข่าววิทย์

Designer Wine? Characterization Of Grapevine Transposons May Aid Development Of New Grape Varieties

0 sec ago
A new study presents a genome-wide characterization of grapevine transposons. This work shows that transposons have captured and amplified gene sequences in grapevines, which could have had an impact on gene evolution and their regulation.
Categories: ข่าววิทย์

Low-birth-weight Children Should Have Their Blood Pressure Checked, Researchers Find

0 sec ago
Blood pressure in low-birth-weight children younger than 3 years of age not only can be measured but should be, researchers have found.
Categories: ข่าววิทย์

Scientists Peel Away Mystery Behind Gold's Catalytic Prowess

0 sec ago
Using the world's most powerful microscopes for chemical analysis, scientists have pinpointed where the conversion of carbon monoxide to carbon dioxide occurs when gold is supported on iron oxide. CO oxidation is critical to firefighters and others who wear protect masks when entering a burning building. Bilayer clusters of atoms less than a nanometer in dimension are found to be responsible for a vital oxidation reaction.
Categories: ข่าววิทย์

Hallucinations In The Flash Of An Eye

0 sec ago
Specific brain regions show increased activity during hallucinations. Researchers introduce a new experimental approach to studying hallucinations as they occur.
Categories: ข่าววิทย์

Yale Researchers Find 'Junk DNA' May Have Triggered Key Evolutionary Changes In Human Thumb And Foot

2 hours 34 min ago
Out of the 3 billion genetic letters that spell out the human genome, Yale scientists have found a handful that may have contributed to the evolutionary changes in human limbs that enabled us to manipulate tools and walk upright.
Categories: ข่าววิทย์

Infectious, Test Tube-produced Prions Can Jump The 'Species Barrier'

2 hours 34 min ago
Researchers have shown that they can create entirely new strains of infectious proteins known as prions in the laboratory by simply mixing infectious prions from one species with the normal prion proteins of another species.
Categories: ข่าววิทย์

How Salmonella Bacteria Contaminate Salad Leaves

2 hours 34 min ago
How does Salmonella bacteria cause food poisoning by attaching to salad leaves? A new study shows how some Salmonella bacteria use the long stringy appendages they normally use to help them "swim" and move about to attach themselves to salad leaves and other vegetables, causing contamination and a health risk.
Categories: ข่าววิทย์

Large Hadron Collider Switch-on Fears Are Completely Unfounded, Report Finds

2 hours 34 min ago
A new report provides the most comprehensive evidence available to confirm that the Large Hadron Collider (LHC)'s switch-on, due on Wednesday next week, poses no threat to mankind. Nature's own cosmic rays regularly produce more powerful particle collisions than those planned within the LHC, which will enable nature's laws to be studied in controlled experiments.
Categories: ข่าววิทย์

Promising Method For Reducing MRSA Infections In Hospitals

2 hours 34 min ago
Researchers report that switching between two antibiotics, linezolid and vancomycin, every three months in the surgical ICU decreased the MRSA infection rate from 1.9 to 1.4 patients per 100 admissions. In-hospital mortality from surgical ICU-acquired MRSA infections fell from 3.8 patients per year to none.
Categories: ข่าววิทย์

Thinking People Eat Too Much: Intellectual Work Found To Induce Excessive Calorie Intake

2 hours 34 min ago
Scientists have demonstrated that intellectual work induces a substantial increase in calorie intake. The details of this discovery could go some way to explaining the current obesity epidemic.
Categories: ข่าววิทย์

Innate Immune System Targets Asthma-linked Fungus For Destruction

Fri, 05/09/2008 - 22:00
A new study shows that the innate immune system of humans is capable of killing a fungus linked to airway inflammation, chronic rhinosinusitis and bronchial asthma. Researchers have revealed that eosinophils, a particular type of white blood cell, exert a strong immune response against the environmental fungus Alternaria alternata.
Categories: ข่าววิทย์

Biocontrol Insect Exacerbates Invasive Weed

Fri, 05/09/2008 - 22:00
Biocontrol agents, such as insects, are often released outside of their native ranges to control invasive plants. But scientists in Montana have found that through complex community interactions among deer mice, native plants and seeds, the presence of an introduced fly may exacerbate the effects of the invasive plant it was meant to control.
Categories: ข่าววิทย์

Age-related Memory Loss Tied To Slip In Filtering Information Quickly

Fri, 05/09/2008 - 22:00
Scientists have identified a way in which the brain's ability to process information diminishes with age, and shown that this break down contributes to the decreased ability to form memories that is associated with normal aging.
Categories: ข่าววิทย์

No Connection Between Measles, Mumps, Rubella (MMR) Vaccine And Autism, Study Suggests

Fri, 05/09/2008 - 22:00
In a case-control study, the presence of measles virus RNA was no more likely in children with autism and GI disturbances than in children with only GI disturbances. Furthermore, GI symptom and autism onset were unrelated to MMR vaccine timing.
Categories: ข่าววิทย์

DNA Shows That Last Woolly Mammoths Had North American Roots

Fri, 05/09/2008 - 22:00
In a surprising reversal of conventional wisdom, a DNA-based study has revealed that the last of the woolly mammoths--which lived between 40,000 and 4,000 years ago--had roots that were exclusively North American.
Categories: ข่าววิทย์

Children With TVs Or Computers In Their Room Sleep Less

Fri, 05/09/2008 - 22:00
Middle school children who have a television or computer in their room sleep less during the school year, watch more TV, play more computer games and surf the net more than their peers who don't.
Categories: ข่าววิทย์

Asymptomatic Carotid Plaque Healing Mechanisms Observed

Fri, 05/09/2008 - 19:00
Researchers have observed a noninvasive MR imaging a healing mechanism for plaque rupture, a potentially life-threatening event in the cardiovascular system that can result in a fatal heart attack or debilitating stroke. The untimely death of well-known television journalist Tim Russert, was due to the sudden rupture of a vulnerable plaque in a critical location in a coronary artery.
Categories: ข่าววิทย์

DNA Editing Tool Flips Its Target

Fri, 05/09/2008 - 19:00
Imagine having to copy an entire book by hand without missing a comma. Our cells face a similar task every time they divide. They must duplicate both their DNA and a subtle pattern of punctuation-like modifications on the DNA known as methylation. Scientists have caught in action one of the tools mammalian cells use to maintain their pattern of methylation. Visualized by X-ray crystallography, the SRA domain of the protein UHRF1 appears to act like a bookmark while enzymes are copying a molecule of DNA.
Categories: ข่าววิทย์

roti