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Saturday, December 20, 2014

ScienceDaily: Most Popular News

ScienceDaily: Most Popular News

Instant-start computers possible with new breakthrough

Posted: 18 Dec 2014 12:45 PM PST

If data could be encoded without current, it would require much less energy and make things like low-power, instant-on computing a ubiquitous reality. Scientists have made a breakthrough in that direction with a room-temperature magnetoelectric memory device. Equivalent to one computer bit, it exhibits the holy grail of next-generation nonvolatile memory: magnetic switchability, in two steps, with nothing but an electric field.

Ibuprofen use leads to extended lifespan in several species, study shows

Posted: 18 Dec 2014 11:10 AM PST

A common over-the-counter drug that tackles pain and fever may also hold keys to a longer, healthier life, according to a Texas A&M AgriLife Research scientist. Regular doses of ibuprofen extended the lifespan of multiple species.

Crows are smarter than you think: Crows join humans, apes and monkeys in exhibiting advanced rational thinking

Posted: 18 Dec 2014 10:14 AM PST

Crows have the brain power to solve higher-order, relational-matching tasks, and they can do so spontaneously, according to new research. That means crows join humans, apes and monkeys in exhibiting advanced relational thinking, according to the research.

Birds sensed severe storms and fled before tornado outbreak

Posted: 18 Dec 2014 10:14 AM PST

Golden-winged warblers apparently knew in advance that a storm that would spawn 84 confirmed tornadoes and kill at least 35 people last spring was coming, according to a new report. The birds left the scene well before devastating supercell storms blew in.

Genetic ancestry of different ethnic groups varies across the United States

Posted: 18 Dec 2014 10:14 AM PST

The United States is a melting pot of different racial and ethnic groups, but it has not been clear how the genetic ancestry of these populations varies across different geographic regions. In a landmark study, researchers analyzed the genomes of more than 160,000 African-Americans, Latinos, and European-Americans, providing novel insights into the subtle differences in genetic ancestry across the United States.

Weigh-in once a week or you'll gain weight

Posted: 17 Dec 2014 02:14 PM PST

Stepping on the scale is common among dieters but how does the frequency of weigh-ins impact weight? A new study showed that the more frequently dieters weighed themselves the more weight they lost, and if participants went more than a week without weighing themselves, they gained weight.

Scientists open new frontier of vast chemical 'space': As proof-of-principle, team makes dozens of new chemical entities

Posted: 17 Dec 2014 10:15 AM PST

Chemists have invented a powerful method for joining complex organic molecules that is extraordinarily robust and can be used to make pharmaceuticals, fabrics, dyes, plastics and other materials previously inaccessible to chemists.

Hugs help protect against stress, infection, say researchers

Posted: 17 Dec 2014 07:13 AM PST

Researchers tested whether hugs act as a form of social support, protecting stressed people from getting sick. They found that greater social support and more frequent hugs protected people from the increased susceptibility to infection associated with being stressed and resulted in less severe illness symptoms.

Ancient Earth may have made its own water: Rock circulating in mantle feeds world's oceans even today, evidence suggests

Posted: 17 Dec 2014 06:05 AM PST

In a finding that meshes well with recent discoveries from the Rosetta mission, researchers have discovered a geochemical pathway by which Earth makes it own water through plate tectonics. This finding extends the planet's water cycle to billions of years -- and suggests that enough water is buried in the deep earth right now to fill the Pacific Ocean.

MESSENGER data suggest recurring meteor shower on Mercury

Posted: 16 Dec 2014 03:37 PM PST

The closest planet to the sun appears to get hit by a periodic meteor shower, possibly associated with a comet that produces multiple events annually on Earth. The clues pointing to Mercury's shower were discovered in the very thin halo of gases that make up the planet's exosphere, which is under study by NASA's MESSENGER (MErcury Surface, Space ENvironment, GEochemistry, and Ranging) spacecraft.

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