Πέμπτη, 29 Μαΐου 2014

ScienceDaily: Most Popular News

ScienceDaily: Most Popular News


Why don’t the highly educated smoke? Families kids grow up in play important role

Posted: 27 May 2014 07:17 PM PDT

It's well established that adults with college degrees are much less likely to smoke than adults with less education, but the reasons for this inequality are unclear. Families in which kids grow up and children's non-cognitive skills may matter far more than realized in explaining the robust association between education and smoking in adulthood.

Diamond planets may be more common than astronomers thought

Posted: 27 May 2014 07:05 PM PDT

Carbon-rich planets may be more common than previously thought, according to new research. Some of these planets, all located far beyond Earth's solar system, could contain vast deposits of graphite or diamonds, and their apparent abundance prompts new questions about the implications of carbon-intense environments for climate, plate tectonics, and other geological processes, as well as for life.

Intertwined evolution of human brain and brawn

Posted: 27 May 2014 03:53 PM PDT

The cognitive differences between humans and our closest living cousins, chimpanzees, are staggeringly obvious. However, a new study suggests that human muscle may be just as unique. Scientists have found that metabolite concentrations evolved rapidly over the course of human evolution in two tissues: in the brain and, more surprisingly, in muscle.

Sunsets on Titan reveal the complexity of hazy exoplanets

Posted: 27 May 2014 03:07 PM PDT

Scientists working with data from NASA's Cassini mission have developed a new way to understand the atmospheres of exoplanets by using Saturn's smog-enshrouded moon Titan as a stand-in. The new technique shows the dramatic influence that hazy skies could have on our ability to learn about these alien worlds orbiting distant stars.

Learning early in life may help keep brain cells alive: Brain cells survive in young who master a task

Posted: 27 May 2014 12:47 PM PDT

Using your brain -- particularly during adolescence -- may help brain cells survive and could impact how the brain functions after puberty. Scientists have found that the newborn brain cells in young rats that were successful at learning survived while the same brain cells in animals that didn't master the task died quickly.

A habitable environment on Martian volcano?

Posted: 27 May 2014 12:47 PM PDT

The Martian volcano Arsia Mons may have been home to one of the most recent habitable environments yet found on the Red Planet, geologists say. The research shows that volcanic eruptions beneath a glacial ice sheet would have created substantial amounts of liquid water on Mars's surface around 210 million years ago. Where there was water, there is the possibility of past life.

Seafloor experts publish new view of zone where Malaysia Airlines flight 370 might lie

Posted: 27 May 2014 11:59 AM PDT

A new illustration of the seafloor, created by two of the world's leading ocean floor mapping experts that details underwater terrain where the missing Malaysia Airlines flight might be located, could shed additional light on what type of underwater vehicles might be used to find the missing airplane and where any debris from the crash might lie.

Hybrid energy transfer system mimics process responsible for photosynthesis

Posted: 27 May 2014 09:41 AM PDT

Scientists have developed a new hybrid energy transfer system, which mimics the processes responsible for photosynthesis. From photosynthesis to respiration, the processes of light absorption and its transfer into energy represent elementary and essential reactions that occur in any biological living system. In a new study, researchers demonstrate an alternate non-radiative, intermolecular energy transfer that exploits the intermediating role of light confined in an optical cavity.

Light-colored butterflies and dragonflies thriving as European climate warms

Posted: 27 May 2014 08:49 AM PDT

Butterflies and dragonflies with lighter colors are out-competing darker-colored insects in the face of climate change. Scientists have shown that as the climate warms across Europe, communities of butterflies and dragonflies consist of more lighter coloured species. Darker coloured species are retreating northwards to cooler areas, but lighter coloured species are also moving their geographical range north as Europe gets warmer.

Clinical trial reaffirms diet beverages play positive role in weight loss

Posted: 27 May 2014 05:51 AM PDT

A new study confirms that drinking diet beverages can help people lose weight. "This study clearly demonstrates that diet beverages can in fact help people lose weight, directly countering myths in recent years that suggest the opposite effect -- weight gain," said a study co-author.

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