ScienceDaily: Latest Science News

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• Tiny Frozen Microbe May Hold Clues To Extraterrestrial Life
• Father's Sperm Delivers Much More Complex Material Than Previously Thought
• Stress Makes Your Hair Go Gray
• Genetically Elevated Levels Of Lipoprotein Associated With Increased Risk Of Heart Attack
• Tunable Graphene Bandgap Opens The Way To Nanoelectronics And Nanophotonics
• Symptoms Of Depression In Obese Children Linked To Elevated Cortisol
• New Tidal Debris Discovered From Colliding Galaxies
• HIV-1's 'Hijacking Mechanism' Pinpointed
• Reviving American Chestnut Trees May Mitigate Climate Change
• Colon Cancer Screening Technique Shows Continued Promise In New Study
• Microbes Found That Eat Hydrocarbons, And Leave Behind Non-toxic Residue
• Vast Majority Won’t Have Access To Antivirals In Pandemic, But Generic Drugs Could Help Prevent Deaths
• Evolution Can Occur In Less Than 10 Years, Guppy Study Finds
• Huntington's Disease Deciphered
• Fungus Species Traced Using The Internet
• Four Risk Factors Raise Probability Of Developing Precursor Of Heart Failure
• Advance In Understanding Cellulose Synthesis
• Better Sleep Is Associated With Improved Academic Success
• Wiping Out Tooth Infections: Cool Plasma Packs Heat Against Biofilms
• Fifty-one Genes Predict Breast Cancer Survival
• One Moose, Two Moose: Scientist Seeks Correction In Number Of Species
• Health Risks Begin In Overweight Range, BMI Doesn't Tell Whole Story
• Closing The Gaps In The Human Genome
• Poor Sleep Is Associated With Lower Relationship Satisfaction In Both Women And Men
• Urban Myth Disproved: Fingerprints Do Not Improve Grip Friction
• Bariatric Surgery Increases Risk Of Fractures, Study Finds
• Trimming The Fat Boosts Blood Recovery After Marrow Transplant
• Diabetes Patients Should Have Regular Exercise, Weight Training
• Predicted Ground Motions For Great Earthquake In Pacific Northwest: Seattle, Victoria And Vancouver
• Meditation May Be An Effective Treatment For Insomnia

Tiny Frozen Microbe May Hold Clues To Extraterrestrial Life Posted: 15 Jun 2009 11:00 AM PDT A novel bacterium -- trapped three kilometers under glacial ice for over 120,000 years -- may hold clues as to what life forms might exist on other planets.

Father's Sperm Delivers Much More Complex Material Than Previously Thought Posted: 15 Jun 2009 11:00 AM PDT It was long believed that conception does not involve equals. The egg is a relatively large biological factory compared with the tiny sperm, which delivers to the egg one copy of the father's genes. However, a new study reveals that the father's sperm delivers much more complex genetic material than previously thought. The findings could lead to a test to help couples deal with infertility.

Stress Makes Your Hair Go Gray Posted: 15 Jun 2009 11:00 AM PDT Those pesky graying hairs that tend to crop up with age really are signs of stress, reveals a new report.

Genetically Elevated Levels Of Lipoprotein Associated With Increased Risk Of Heart Attack Posted: 15 Jun 2009 11:00 AM PDT A genetic analysis of data from three studies suggests that genetically elevated levels of lipoprotein(a) are associated with an increased risk of heart attack, according to a new study.

Tunable Graphene Bandgap Opens The Way To Nanoelectronics And Nanophotonics Posted: 15 Jun 2009 11:00 AM PDT Graphene's electrical properties include electrons so mobile they travel at near light speed. But without a bandgap, graphene's promise for electronics and photonics can't be realized. Now researchers can precisely tune a bandgap in bilayer graphene from zero to 0.25 eV, in the infrared energy region.

Symptoms Of Depression In Obese Children Linked To Elevated Cortisol Posted: 15 Jun 2009 11:00 AM PDT A new study connects abnormalities of the "stress" hormone cortisol with symptoms of depression in obese children, and confirms that obesity and depression often occur together, even in children.

New Tidal Debris Discovered From Colliding Galaxies Posted: 15 Jun 2009 08:00 AM PDT Astronomers have discovered new tidal debris stripped away from colliding galaxies. New debris images are of special interest since they show the full history of galaxy collisions and resultant starburst activities, which are important in 'growing' galaxies in the early Universe.

HIV-1's 'Hijacking Mechanism' Pinpointed Posted: 15 Jun 2009 08:00 AM PDT Researchers may have found a chink in the armor of the human immunodeficiency virus type 1 (HIV-1), the microorganism which causes AIDS.

Reviving American Chestnut Trees May Mitigate Climate Change Posted: 15 Jun 2009 08:00 AM PDT A new study shows that introducing a new hybrid of the American chestnut tree would not only bring back the all-but-extinct species, but also put a dent in the amount of carbon in the Earth's atmosphere.

Colon Cancer Screening Technique Shows Continued Promise In New Study Posted: 15 Jun 2009 08:00 AM PDT Recent clinical trials show that a new colon cancer screening technique has a high enough sensitivity that it could potentially be as or more successful than a colonoscopy in screening for colon cancer.

Microbes Found That Eat Hydrocarbons, And Leave Behind Non-toxic Residue Posted: 15 Jun 2009 08:00 AM PDT Bioremediation of industrial sites and petrochemical spillages often involves finding microbes that can gorge themselves on the toxic chemicals. This leaves behind a non-toxic residue or mineralized material. Researchers in China describe studies of a new microbe that can digest hydrocarbons.

Vast Majority Won’t Have Access To Antivirals In Pandemic, But Generic Drugs Could Help Prevent Deaths Posted: 15 Jun 2009 08:00 AM PDT Almost 90 percent of the world's population will not have timely access to affordable supplies of vaccines and antiviral agents in the current influenza pandemic. But it is possible that inexpensive generic drugs that are readily available for treating diabetes and lowering cholesterol, even in developing countries, could save millions of lives. That's the conclusion reached by a new and an extensive research review and analysis.

Evolution Can Occur In Less Than 10 Years, Guppy Study Finds Posted: 15 Jun 2009 05:00 AM PDT How fast can evolution take place? In just a few years, according to a new study on guppies. Researchers found that guppies introduced to a low-predation environment adapted to their new environment by producing larger and fewer offspring with each reproductive cycle. No such adaptation was seen in guppies that colonized a high-predation environment.

Huntington's Disease Deciphered Posted: 15 Jun 2009 05:00 AM PDT Researchers have discovered how the mutated Huntington gene acts on the nervous system to create the devastation of Huntington's disease.

Fungus Species Traced Using The Internet Posted: 15 Jun 2009 05:00 AM PDT Studying the ecology and distribution of plants does not take place solely in the forest. A new way of searching in scientific databases has enabled researchers to discover kinship between fungi from Sweden and Thailand - and has revealed some species with incorrect generic names into the bargain.

Four Risk Factors Raise Probability Of Developing Precursor Of Heart Failure Posted: 15 Jun 2009 05:00 AM PDT High blood pressure, excessive weight, smoking and diabetes are strongly linked with increased size of the left ventricle, a major cause of heart failure. People without these four factors suffered almost no increase in ventricle size over the 20-year study. A separate study calculated the 30-year risk of cardiovascular disease, which may help people better understand their long-term risk.

Advance In Understanding Cellulose Synthesis Posted: 15 Jun 2009 05:00 AM PDT Cellulose makes up plant cell walls, gives plants shape and form and is a target of renewable, plant-based biofuels research. But how it forms, and thus how it can be modified to design energy-rich crops, is not well understood. Now a study has discovered that the underlying protein network that provides the scaffolding for cell-wall structure is also the traffic cop for delivering critical growth-promoting molecules where needed.

Better Sleep Is Associated With Improved Academic Success Posted: 15 Jun 2009 05:00 AM PDT Getting more high-quality sleep is associated with better academic performance, according to a new research. The positive relationship is especially relevant to performance in math.

Wiping Out Tooth Infections: Cool Plasma Packs Heat Against Biofilms Posted: 15 Jun 2009 02:00 AM PDT Miniature plasma -- silent and cool to the touch -- wipes out tenacious infections quickly and easily in teeth. The technology could eventually replace some antibiotic treatments for battling local infections.

Fifty-one Genes Predict Breast Cancer Survival Posted: 15 Jun 2009 02:00 AM PDT It may be possible in the future to use a specimen from the tumor to determine which patients with breast cancer have a good chance of overcoming the disease, and which patients should be given more intensive treatments. Fifty-one genes may together provide information about the prognosis for an individual patient.

One Moose, Two Moose: Scientist Seeks Correction In Number Of Species Posted: 15 Jun 2009 02:00 AM PDT It is a misinterpretation of the application of the bedrock of scientific naming with regard to the number of moose species that an Alaskan wildlife geneticist seeks to correct.

Health Risks Begin In Overweight Range, BMI Doesn't Tell Whole Story Posted: 15 Jun 2009 02:00 AM PDT Being overweight increases the risk for cardiovascular disease, type 2 diabetes and other health conditions. Excess weight is progressive; thus, everyone above normal weight -- including children -- should avoid weight increases and reduce weight through healthy diet choices and regular physical activity. The statement recommends doing research on overweight and health, beyond studies that focus solely on the relationship between total body mass index and risk of death.

Closing The Gaps In The Human Genome Posted: 15 Jun 2009 02:00 AM PDT Sequence gaps in human chromosome 15 have been closed by the application of 454 technology. Researchers have described a simple and scalable method for finishing nonstructural gaps in genome assemblies.

Poor Sleep Is Associated With Lower Relationship Satisfaction In Both Women And Men Posted: 15 Jun 2009 02:00 AM PDT A bidirectional association exists between couples' sleep quality and the quality of their relationship, according to new research.

Urban Myth Disproved: Fingerprints Do Not Improve Grip Friction Posted: 14 Jun 2009 11:00 PM PDT Everyone thinks that they know what fingerprints are for: to improve your grip's friction. But it turns out that this urban myth is wrong. Scientists have proved that instead of improving your grip, fingerprints drastically reduce friction.

Bariatric Surgery Increases Risk Of Fractures, Study Finds Posted: 14 Jun 2009 11:00 PM PDT After weight loss surgery, people have nearly twice the expected risk of breaking a bone and an even higher risk of a foot or hand fracture, a new study has found.

Trimming The Fat Boosts Blood Recovery After Marrow Transplant Posted: 14 Jun 2009 11:00 PM PDT Seeking ways to improve blood recovery after chemotherapy or bone marrow transplant, researchers have discovered that fat cells, which accumulate in bone marrow as people age, inhibit the marrow's ability to produce new blood cells. Their study suggests that blocking this fatty infiltration could help enhance patients' recovery after transplant.

Diabetes Patients Should Have Regular Exercise, Weight Training Posted: 14 Jun 2009 11:00 PM PDT To reduce their cardiovascular risk, patients with type 2 diabetes should do at least two-and-a-half hours per week of moderate-intensity or one-and-a-half hours per week of vigorous-intensity aerobic exercise or a combination of the two. Resistance training can also benefit people with type 2 diabetes. Regular exercise can reduce or eliminate the need for medication in some patients with type 2 diabetes.

Predicted Ground Motions For Great Earthquake In Pacific Northwest: Seattle, Victoria And Vancouver Posted: 14 Jun 2009 11:00 PM PDT A new study evaluates expected ground motion in Seattle, Victoria and Vancouver from earthquakes of magnitude 7.5 - 9.0, providing engineers and policymakers with a new tool to build or retrofit structures to withstand seismic waves from large "subduction" earthquakes off the continent's west coast.

Meditation May Be An Effective Treatment For Insomnia Posted: 14 Jun 2009 11:00 PM PDT Meditation may be an effective behavioral intervention in the treatment of insomnia, according to new research.

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