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168,100 articles from ScienceDaily

On The High Horse: Why Dominant Individuals Climb The Proverbial Ladder

Psychological findings imply that a person's level of dominance could be measured based on their biases favoring vertical representations of power, as is the case in a hierarchy. In an attempt to grasp complex concepts, humans have tried to represent abstractions like power and dominance through visually-stimulated metaphors such as pyramids and steeples. And dominance especially has been measured...

Humans May Lose Battle With Bacteria, Medicinal Chemist's Research Shows

It may not be an ideal topic for polite conversation, but human beings are swarming with bacteria: Even the average healthy adult plays host to about 100 trillion microscopic organisms. Infection takes place when the bacteria get out of hand. Now, a new history of the struggle between man and bacteria -- and warns that humankind someday may lose its...

Silicon Nanotubes For Hydrogen Storage In Fuel Cell Vehicles

After powering the micro-electronics revolution, silicon could carve out an important new role in speeding the debut of ultra-clean fuel cell vehicles powered by hydrogen, researchers in China suggest. Their calculations show for the first time that silicon nanotubes can store hydrogen more efficiently than their carbon nanotube...

Menstrual Blood: A Valuable Source Of Multipotential Stem Cells?

Researchers suggest that stromal cells derived from menstrual blood may represent a potentially unlimited, ethically unencumbered, easily collectable and inexpensive source of stem cells for use in regenerative medicine. The study found that MenSCs are easily expandable to clinical relevance and express multipotent markers at both the molecular and cellular level. The abundance and plasticity of...

Primary Driver Of Stomach Cancer Development Identified

Scientists have discovered what appears to be the primary driver of tumor development in the stomach. Inhibiting the signaling cascade initiated by the IL-11 protein prevented the development of inflammation, hyperplasia (an abnormal increase in the number of cells) and tumor formation in pre-clinical models of gastric...

Transgenic Papaya Genome Draft Yields Many Fruits

Researchers have produced a first draft of the papaya genome. This draft sheds new light on the evolution of flowering plants. And because it involves a genetically modified plant, the newly sequenced papaya genome offers the most detailed picture yet of the genetic changes that make the plant resistant to the papaya ringspot...

Pregnancy Is Possible After Cancer Treatment

It has been reported for the first time in Germany that healthy ovarian tissue has been taken from a nonpregnant woman with cancer and then reimplanted after cancer therapy. The patient is now 32-years-old, and could become pregnant as a result.

Scientists Unravel Heparin Death Mystery

Scientists have explained how contaminated batches of the blood-thinner heparin were able to slip past traditional safety screens and kill dozens of patients recently in the United States and Germany.

Benefits Of Omega-3s Still Unclear For Bipolar Disorder

Despite intriguing findings that omega-3 fatty acid supplements could alleviate depression symptoms, there is still not enough evidence to say whether omega-3s are useful treatments for people with bipolar disorder, according to a review of recent studies. Nevertheless, omega-3s deserve further study, since they seem to have no serious side effects and most experts recommend the supplements for...

Costs, Considerations Of Switching To Natural Or Organic Agricultural Methods

The definition of "organic" is defined by the US Department of Agriculture; "natural," however, can be defined differently depending on who's doing the labeling. But both terms mean one thing: higher costs for producers. That's why researchers hope to provide another tool to help those in the beef industry pondering whether to abandon conventional methods and go natural or...

Human Brain Appears 'Hard-wired' For Hierarchy

Human imaging studies have for the first time identified brain circuitry associated with social status. Researchers found that different brain areas are activated when a person moves up or down in a pecking order -- or simply views perceived social superiors or inferiors. Circuitry activated by important events responded to a potential change in hierarchical status as much as it did to winning...

Lumbar Supports Not Particularly Effective For Low Back Pain

Lumbar or lower back supports -- those large belts that people wear around their waists when they lift or carry heavy objects -- are not very useful for preventing low back pain, according to a new systematic review. Although many people use lumbar supports to bolster the back muscles, they are no more effective than lifting education -- or no treatment whatsoever -- in preventing related pain or...

Galaxies Gone Wild: Dramatic Collisions Trigger Bursts Of Star Formation

Interacting galaxies are found throughout the Universe, sometimes as dramatic collisions that trigger bursts of star formation, on other occasions as stealthy mergers that result in new galaxies. Galaxy mergers, which were more common in the early Universe than they are today, are thought to be one of the main driving forces for cosmic evolution, turning on quasars, sparking frenetic star births...

New Gene Discovered For New Form Of Intellectual Disability

The Centre for Addiction and Mental Health has discovered a new form of intellectual disability involving mental retardation along with the eye defect retinitis pigmentosa. CAMH also discovered the previously unidentified gene that causes this disorder, CC2D2A. This scientific advance will help understand the developmental and biological processes involved in brain development, and may help...


WEDNESDAY 23. APRIL 2008


To A Fault: The Bottom Line On Earthquakes

Although many people think that California "owns" all the earthquakes, Ohio also has its share of faults. Unlike another earthquake that woke people on another April 18, 102 years ago, this quake was fairly mild.