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168,132 articles from ScienceDaily

Physicists Steer Electrons With Laser Pulses

Three theoretical physicists explained how attosecond laser pulses can be used to direct the motion of an electron inside a hydrogen molecule, and what the measurable consequences of this control over the electron would be.

Gamma-Ray Evidence Suggests Ancient Mars Had Massive Oceans

As much as a third of Mars could have been underwater, scientists say. An international team of scientists who analyzed data from the Gamma Ray Spectrometer onboard NASA's Mars Odyssey reports new evidence for the controversial idea that oceans once covered about a third of ancient...

Gene Chips Accurately Detect Pneumonia In ICU Patients On Ventilators

Even seasoned doctors have a difficult time diagnosing pneumonia in hospitalized patients breathing with the assistance of a ventilator. That's because a patient's underlying illness often skews laboratory test results and masks pneumonia's symptoms. Now, researchers report they have validated the use of gene chip technology to rapidly and accurately detect pneumonia associated with ventilator use...

Children Distressed By Family Fighting Have Higher Stress Hormones

A new study found that children who are very distressed when their parents fight have higher levels of the stress hormone cortisol. Distress, hostility, and level of involvement parental arguments were measured in 208 six-year olds. Cortisol levels were measured by taking saliva samples before and after simulated telephone arguments between their parents. Children who were very distressed and very...

Alpine Rivers Hold Important Clues For Preserving Biodiversity And Coping With Climate Change

Marginal plants, particularly trees, play a crucial role in sustaining the biodiversity of Europe's big river systems, according to new research. This finding provides important clues for protecting Europe's rivers against a combined onslaught from human development and climate change, which are tampering with existing ecosystems and changing both the physical and biological forces acting upon...

Astronomers Detect Matter Torn Apart By Black Hole

Astronomers have used two different telescopes simultaneously to study the violent flares from the supermassive black hole in the center of the Milky Way. They have detected outbursts from this region, known as Sagittarius A*, which reveal material being stretched out as it orbits in the intense gravity close to the central black...

Gene Associated With Epilepsy Discovered

Scientists have found a new gene associated with the brain disorder epilepsy. While the PRICKLE1 gene mutation was specific to a rare form of epilepsy, the study results could help lead to new ideas for overall epilepsy treatment.

Most Efficient Silicon-based OLED Microdisplay In The World

Offering better comfort to users of point-and-shoot digital cameras, and new designs for video glasses with the highest resolution ever, Microoled and the CEA-Leti have targeted these and many other potential applications with the announcement of the most efficient silicon-based OLED microdisplay in the...