ScienceDaily: Latest Science News

Discovery Of Warm Plasma Cloak Surrounding Earth, New Region Of Magnetosphere Posted: 14 Dec 2008 05:00 PM PST A detailed analysis of the measurements of five different satellites has revealed the existence of the warm plasma cloak, a new region of the magnetosphere, which is the invisible shield of magnetic fields and electrically charged particles that surround and protect Earth from the onslaught of the solar wind.

Selenium May Prevent High Risk-bladder Cancer Posted: 14 Dec 2008 05:00 PM PST New research suggests that selenium, a trace mineral found in grains, nuts and meats, may aid in the prevention of high-risk bladder cancer.

Why Atmospheric Pressure Peaks At 10am And 10pm In The Tropics Posted: 14 Dec 2008 05:00 PM PST For over two centuries, meteorologists were puzzled by the observation that atmospheric pressure in the tropics peaks at 10 a.m. and 10 p.m. nearly every day.

Understanding Brain Tumor Growth Through Applying Weather Forecasting Technology Posted: 14 Dec 2008 05:00 PM PST Researchers are applying weather forecast technology to model and track the growth patterns of brain tumors.

Sweetened Beverage Consumption Increases Dramatically In U.S. Posted: 14 Dec 2008 05:00 PM PST Over the past two decades, the number of adults consuming sugar-sweetened beverages such as soft drinks, fruit drinks and punches has increased dramatically, according to a new study.

Inside The Consumer Mind: Brain Scans Reveal Choice Mechanism Posted: 14 Dec 2008 05:00 PM PST A marketing professor has conducted research that shows that decision making is simplified when a consumer considers a third, less attractive option. For example, when a second, less desirable sweater is also considered in the situation above, the shopper could solve their conundrum by choosing the more attractive sweater.

Massive Jellyfish Swarms In Hawaii, Gulf Of Mexico And Other Locations Posted: 14 Dec 2008 11:00 AM PST Massive swarms of stinging jellyfish and jellyfish-like animals are transforming many world-class fisheries and tourist destinations into veritable jellytoriums that are intermittently jammed with pulsating, gelatinous creatures. Areas that are currently particularly hard-hit by these squishy animals include Hawaii, the Gulf of Mexico, the east coast of the US, the Bering Sea, the Mediterranean Sea, Australia, the Black Sea and other European seas, the Sea of Japan, the North Sea and Namibia.

New Mammography Technology Effective In Detecting Breast Cancer Posted: 14 Dec 2008 11:00 AM PST A study has found that positron emission mammography, a new technique for imaging the breast, is not affected by either breast density or a woman's hormonal status, two factors that limit the effectiveness of standard mammography and MRI at detecting cancer.

Patient Photos Spur Radiologist Empathy And Eye For Detail Posted: 14 Dec 2008 11:00 AM PST Including a patient's photo with imaging exam results may enable a more meticulous reading from the radiologist interpreting the images, as well as a more personal and empathetic approach, according to a new study.

Treatment Fails To Improve Common Form Of Heart Failure, Study Finds Posted: 14 Dec 2008 11:00 AM PST A medication used for high blood pressure does not improve a common form of heart failure, according to new results from a large, international study.

Improving Internet Access On The Move Posted: 14 Dec 2008 11:00 AM PST The on-board entertainment and internet access enjoyed by train passengers could soon be transformed by new technology developed at the University of York.

Why Are Some People More Susceptible To Depression Than Others? Stressed-out Mice Reveal Role Of Epigenetics In Behavior Posted: 14 Dec 2008 11:00 AM PST Research conducted by a team in Switzerland suggests that a family of genes involved in regulating the expression of other genes in the brain is responsible for helping us deal with external inputs such as stress. Their results, appearing in the journal Neuron, may also give a clue to why some people are more susceptible to anxiety or depression than others.

Antisocial, Invasive Cells Are Basis Of Cancer, Finding Suggests Posted: 14 Dec 2008 05:00 AM PST Scientists have discovered the mechanism by which cells normally repel each other -- a process sidestepped by cancer cells which go on to invade and conquer healthy regions of the body.

Eleven New Gene Sites Linked To Cholesterol, Triglyceride Levels Posted: 14 Dec 2008 05:00 AM PST Scientists have identified 11 novel locations in the human genome where common variations appear to influence cholesterol or triglyceride levels, bringing the total number of lipid-associated genes to 30. Major mutations in some of these genes underlie rare lipid metabolism disorders and it is becoming apparent that common changes that have modest effects can combine with other risk-associated gene variants to significantly influence blood lipid levels.

Broccoli Compound Targets Key Enzyme In Late-stage Cancer Posted: 14 Dec 2008 05:00 AM PST Broccoli and other cruciferous vegetables have long been known to have anti-cancer benefits, and researchers have now found out why. One well-known anti-cancer chemical in broccoli, indole-3-carbinol, was found to inhibit the enzyme elastase, which is found at high levels in late-stage breast and prostate cancers. The discovery of this target will help to design better anti-cancer drugs and to target treatment to specific types of cancer, including late-stage breast and prostate cancers.

Ovarian Cancer Subtypes Are Different Diseases: Implications For Biomarker Studies Posted: 14 Dec 2008 05:00 AM PST In a new analysis of tissue biomarkers expressed in ovarian cancer samples, published in PLoS Medicine, David Huntsman and his colleagues from Vancouver General Hospital suggest that substantial differences exist between ovarian cancer subtypes which should be reflected in patient management.

'Strained' Quantum Dots Show New Optical Properties Posted: 14 Dec 2008 05:00 AM PST The first generation of quantum dots were made from the toxic heavy metal cadmium and had emission wavelengths, and colors, determined by their size. "Lattice strain" created by layers of different semiconductor materials allows the color of quantum dots to be tuned independent of size. Small enough to pass through the kidneys if administered systemically, the new quantum dots are expected to be useful for cancer detection and possibly in solar energy conversion.

More Than Just Being A Sentimental Fool: The Psychology Of Nostalgia Posted: 14 Dec 2008 05:00 AM PST Nostalgia has a long history, being viewed initially as a medical disease, then as a psychiatric disease. According to a new report in Current Directions in Psychological Science, only recently have psychologists begun focusing on the positive and potentially therapeutic aspects of nostalgia. Research suggests that nostalgia can promote psychological health, including counteracting the effects of loneliness and providing us with a greater sense of continuity and meaning to our lives.

Breast Cancer: Research On Tamoxifen Leads To Recommendation For CYP2D6 Gene Test Posted: 12 Dec 2008 09:00 PM PST Findings from a new study have prompted Mayo Clinic researchers to recommend CYP2D6 gene testing for postmenopausal women about to begin tamoxifen therapy. This data confirms that women with an inherited deficiency in the CYP2D6 gene, which is important for the metabolism of tamoxifen, have a nearly fourfold higher risk of early breast cancer recurrence compared to women who have not inherited the deficiency.

Historic Architecture: People, Not Just A Building, Make For 'Place' Posted: 12 Dec 2008 09:00 PM PST A building designed to recapture the past may bring nostalgia, but the end product may not capture current realities of a place, says a professor of historic preservation.

Tau Protein Expression Predicts Breast Cancer Survival -- Though Not As Expected Posted: 12 Dec 2008 09:00 PM PST Expression of the microtubule-binding protein Tau is not a reliable means of selecting breast cancer patients for adjuvant paclitaxel chemotherapy, according to new research.

Potential Links Between Breast Density And Breast Cancer Risk Posted: 12 Dec 2008 09:00 PM PST Having dense breasts -- areas that show up dark on a mammogram -- is strongly associated with increased breast cancer risk, but "why" remains to be answered. Now, by examining dense and non-dense tissue taken from the breasts of healthy volunteers, researchers have found several potential links.

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