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Wednesday, December 17, 2014

ScienceDaily: Most Popular News

ScienceDaily: Most Popular News

NASA Voyager: 'Tsunami wave' still flies through interstellar space

Posted: 15 Dec 2014 05:42 PM PST

The Voyager 1 spacecraft has experienced three shock waves. The most recent shock wave, first observed in February 2014, still appears to be going on. One wave, previously reported, helped researchers determine that Voyager 1 had entered interstellar space.

Patients don't understand risks of unnecessary antibiotics, study shows

Posted: 15 Dec 2014 11:08 AM PST

Communication material is not effective in educating patients on proper antibiotic use, a new study has found. Over prescription of antibiotics is a major factor driving one of the biggest public health concerns today: antibiotic resistance. In a first-of-its-kind study, the research suggests that public health educational materials may not address the misconceptions that shape why patients expect antibiotics, driving doctors to prescribe them more.

Global warming's influence on extreme weather

Posted: 12 Dec 2014 04:02 PM PST

Understanding the cause-and-effect relationship between global warming and record-breaking weather requires asking precisely the right questions. Extreme climate and weather events such as record high temperatures, intense downpours and severe storm surges are becoming more common in many parts of the world. But because high-quality weather records go back only about 100 years, most scientists have been reluctant to say if global warming affected particular extreme events.

Is an understanding of dark matter around the corner? Experimentalists unsure

Posted: 12 Dec 2014 07:16 AM PST

Scientists working on the three newest dark matter experiments are hopeful that we'll soon understand a quarter of the universe -- but they're making no promises.

Ebola virus may replicate in an exotic way

Posted: 11 Dec 2014 11:18 AM PST

Researchers ran biochemical analysis and computer simulations of a livestock virus to discover a likely and exotic mechanism to explain the replication of related viruses such as Ebola, measles and rabies. The mechanism may be a possible target for new treatments within a decade.

Ancient creature discovered in the depths of the Arctic Ocean

Posted: 10 Dec 2014 08:43 AM PST

An extraordinary animal has been discovered more than 1.5 miles (2.5 km) below the ocean surface off the coast of northern Alaska, USA. The new species is a type of bivalve mollusk (clams, mussels, oysters etc.). Age estimates place the new clam as living more than 1.8 million years ago to the near present, but scientists can't discount that it might still be alive today.

Laughing gas shows promise for severe depression, pilot study suggests

Posted: 10 Dec 2014 04:41 AM PST

Nitrous oxide, or laughing gas, has shown early promise as a potential treatment for severe depression in patients whose symptoms don't respond to standard therapies. The pilot study is believed to be the first research in which patients with depression were given laughing gas.

Marijuana's long-term effects on the brain demonstrated

Posted: 10 Nov 2014 01:11 PM PST

The effects of chronic marijuana use on the brain may depend on age of first use and duration of use, according to new research. Researchers for the first time comprehensively describe existing abnormalities in brain function and structure of long-term marijuana users with multiple magnetic resonance imaging (MRI) techniques.

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