ScienceDaily Top Science Headlines
for Saturday, July 19, 2008
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Hydrogen Vehicles Coming Soon? Two Million Could Be On Roads By 2020 (July 18, 2008) -- A transition to hydrogen vehicles could greatly reduce US oil dependence and carbon dioxide emissions, says a new congressionally mandated report from the National Research Council, but making hydrogen vehicles competitive in the automotive market will not be easy. Vehicle costs are high, and the U.S. currently lacks the infrastructure to produce and widely distribute hydrogen to consumers. The maximum practicable number of hydrogen vehicles that could be on the road by 2020 is 2 million, says the report. The number of hydrogen vehicles on the road could then grow rapidly, to nearly 60 million in 2035 and 200 million by 2050. ... > full story
Discovery Of A New Signaling Mechanism May Lead To Novel Anti-inflammatory Therapy (July 18, 2008) -- A new signaling mechanism used to activate protein kinases that are critical for the body's inflammatory response has been discovered. ... > full story
Tunguska Catastrophe: Evidence Of Acid Rain Supports Meteorite Theory (July 18, 2008) -- The Tunguska catastrophe in 1908 evidently led to high levels of acid rain. This is the conclusion reached by Russian, Italian and German researchers based on the results of analyses of peat profiles taken from the disaster region. In peat samples corresponded to 1908 permafrost boundary they found significantly higher levels of the heavy nitrogen and carbon isotopes 15N and 13C. ... > full story
Mini ECG Gets Heart Attack Rehab Patients Mobile (July 18, 2008) -- Scientists have teamed a mobile phone with a miniature heart monitor and a GPS device in research aimed at tackling the low participation rates of heart patients in cardiac rehabilitation. ... > full story
Students Who Use 'Clickers' Score Better On Physics Tests (July 18, 2008) -- Hand-held electronic devices called clickers are helping college students learn physics, according to a series of research studies. Students who used the devices to answer multiple-choice questions during physics lectures earned final examination scores that were around 10 percent higher -- the equivalent of a full-letter grade -- than students who didn't. ... > full story
People Predict Budgets Better On Annual Basis (July 18, 2008) -- People who made annual budgets were more accurate than those who made monthly ones. They also found that peoples' perception of their budget-making abilities affected the accuracy of the budgets. ... > full story
Volcanic Eruptions May Have Wiped Out Ocean Life 94 Million Years Ago (July 18, 2008) -- University of Alberta scientists contend they have the answer to mass extinction of animals and plants 93 million years ago. The answer, research has uncovered, has been found at the bottom of the sea floor where lava fountains erupted, altering the chemistry of the sea and possibly of the atmosphere. ... > full story
Genetic Variant Increases Triglyceride Levels In Asian-Americans (July 18, 2008) -- A genetic variant found almost exclusively in individuals of Asian descent increases the risk of elevated plasma triglycerides over four-fold. In fact, all 11 subjects who carried both copies of this rare variant for apolipoprotein A-V had extremely high and dangerous triglyceride levels in their blood. ... > full story
Tree Branching Key To Efficient Flow In Nature And Novel Materials (July 18, 2008) -- Nature, in the simple form of a tree canopy, appears to provide keen insights into the best way to design complex systems to move substances from one place to another, an essential ingredient in the development of novel "smart" materials. ... > full story
Protein Transports Nutrients Believed To Protect Against Eye Disease (July 18, 2008) -- Scientists have identified the protein responsible for transporting nutrients to the eye that are believed to protect against the development of age-related macular degeneration, a leading cause of vision loss in elderly Americans. The research sought to illuminate the process by which compounds called lutein and zeaxanthin move from the bloodstream to the eye. ... > full story
Virtual World Is Sign Of Future For Scientists, Engineers (July 18, 2008) -- A new virtual environment enables scientists and engineers to interpret raw data collected with powerful instruments called dynamic atomic force microscopes. This is part of a research trend, with tools for other applications also being developed. ... > full story
Context Is Everything: New Research Uncovers Key To Consumer Preferences (July 18, 2008) -- New research in the Journal of Consumer Research reveals that a product's attractiveness can shift depending on the other choices that are available at the time. The authors demonstrate that if consumers perceive they're choosing the best item from a set of options, they are more likely to feel good enough about choosing the product again next time. ... > full story
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