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Friday, August 10, 2012

ScienceDaily: Strange Science News

ScienceDaily: Strange Science News


Brain hubs boil when hoarders face pitching their own stuff

Posted: 09 Aug 2012 04:07 PM PDT

In patients with hoarding disorder, parts of a decision-making brain circuit under-activated when dealing with others' possessions, but over-activated when deciding whether to keep or discard their own things, a new study has found.

Evidence further suggests extra-terrestrial origin of quasicrystals

Posted: 09 Aug 2012 04:07 PM PDT

Results from an expedition to far eastern Russia that set out to find the origin of naturally occurring quasicrystals have provided convincing evidence that they arrived on Earth from outer space. Scientists reveal that new, naturally occurring quasicrystal samples have been found in an environment that does not have the extreme terrestrial conditions needed to produce them, therefore strengthening the case that they were brought to Earth by a meteorite. 

Gecko feet hold clues to creating bandages that stick when wet

Posted: 09 Aug 2012 01:27 PM PDT

A better understanding of geckos' gripping power in wet conditions may lead to improvements in bandages and sutures.

Computer scientists reveal how aquatic Olympic gold is captured -- above and below the surface

Posted: 09 Aug 2012 01:25 PM PDT

Computer scientists have isolated the movements of Olympic swimmers and divers through a cutting-edge technique that reveals their motions above and below the water's surface.

Soft autonomous robot inches along like an earthworm: Flexible design enables body-morphing capability

Posted: 09 Aug 2012 12:13 PM PDT

Researchers have engineered a soft autonomous robot that moves via peristalsis, crawling across surfaces by contracting segments of its body, much like an earthworm.

Searching salt for answers about life on Earth, Mars

Posted: 09 Aug 2012 12:13 PM PDT

Researchers have discovered that not only is there evidence of liquid water on Mars, but the planet is also rich with magnesium sulfate. One of the questions researchers are seeking to answer is whether microbial life on Earth can grow at high concentrations of magnesium sulfate.

Why living in the moment is impossible: Decision-making memories stored in mysterious brain area known to be involved with vision

Posted: 09 Aug 2012 11:16 AM PDT

The sought-after equanimity of "living in the moment" may be impossible, according to neuroscientists who've pinpointed a brain area responsible for using past decisions and outcomes to guide future behavior.

You snooze, you lose: Less sleep leads to more offspring in male pectoral sandpipers

Posted: 09 Aug 2012 11:16 AM PDT

During the breeding season, polygynous male pectoral sandpipers that sleep the least sire the most young. Biologists have now discovered this extraordinary relationship. During three weeks of intense competition under the constant daylight of the Arctic summer, males actively court females and compete with other males. The most sleepless males were found to be the most successful in producing young.

Neuroscientists find brain stem cells that may be responsible for higher functions, bigger brains

Posted: 09 Aug 2012 11:15 AM PDT

Scientists have identified a new stem cell population that may be responsible for giving birth to the neurons responsible for higher thinking. The finding also paves the way for scientists to produce these neurons in culture—a first step in developing better treatments for cognitive disorders, such as schizophrenia and autism, which result from disrupted connections among these brain cells.

Neolithic man: The first lumberjack?

Posted: 09 Aug 2012 10:38 AM PDT

Scientists have unearthed evidence that sophisticated carpentry tools first appeared at the same time as increased agriculture and the establishment of permanent settlements during the Neolithic Age.

Pine trees one of biggest contributors to air pollution: Pine gases chemically transformed by free radicals

Posted: 09 Aug 2012 10:38 AM PDT

Pine trees are one of the biggest contributors to air pollution. They give off gases that react with airborne chemicals creating tiny, invisible particles that muddy the air. Scientists have shown that particles formed by pine trees are much more dynamic than previously thought. The findings can help make climate and air quality prediction models more accurate, and inform regulatory agencies as they consider strategies for improving air quality.

Earliest use of Mexican turkeys by ancient Maya

Posted: 09 Aug 2012 06:07 AM PDT

A new study shows the turkey, one of the most widely consumed birds worldwide, was domesticated more than 1,000 years earlier than previously believed.

And then there was light! Discovery of the world's first eyeless huntsman spider

Posted: 09 Aug 2012 06:04 AM PDT

A scientist has discovered the first eyeless huntsman spider in the world. With a leg span of only six centimetres and a body size of around twelve millimetres, the spider Sinopoda scurion is certainly not one of the largest representatives of the huntsman spiders, which include more than 1100 species. However, it is the first of its kind in the world without any eyes.

How a leaf beetle walks underwater

Posted: 08 Aug 2012 10:25 AM PDT

Insects are experts when it comes to adhesion on dry surfaces. However, in nature, plants may be covered by water for quite a long period of time, especially after rain. Scientists have now discovered the remarkable ability of the terrestrial leaf beetle to walk underwater. Picking up the beetle's locomotion mechanism, they designed an artificial material, which sticks to surfaces underwater.

Feeling fat may make you fat, study suggests

Posted: 08 Aug 2012 09:18 AM PDT

Normal weight teens who perceive themselves as fat are more likely to grow up to be fat, researchers report.

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