Surprising discovery about how neurons talk to each other

Science Daily - Thu, 17/08/2017 - 5:11pm
New findings challenge existing dogma that neurons release fixed amounts of chemical signal at any one time and could have implications for brain disorders including Parkinson's and schizhophrenia.
Categories: Science

Model for lighter armor developed

Science Daily - Thu, 17/08/2017 - 5:11pm
Engineers are working on developing new light-weight ceramic materials that resist fracture. They are working to better understand exactly how these materials, which are suited for Soldier personal protection and Army systems, fracture, and how they can be further improved. They are focusing on failure through cracking; the material eventually disintegrates into a granular-like state through a process called comminution.
Categories: Science

Older users like to snoop on Facebook, but worried others might snoop on them

Science Daily - Thu, 17/08/2017 - 5:11pm
Older adults are drawn to Facebook so they can check out pictures and updates from family and friends, but may resist using the site because they are worried about who will see their own content, according to a team of researchers.
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New MH370 Analysis Again Suggests Plane Came Down Outside Search Area

Slashdot - Thu, 17/08/2017 - 4:40pm
An anonymous reader shares a report: New analysis of images thought to depict wreckage from missing Malaysian Airlines flight MH 370 suggest the Boeing 777 came down to the north of the area searched during efforts to find the plane. A new document [PDF] released yesterday by Geoscience Australia (GA) detailed analysis of four images captured by the PLEIADES 1A Earth-imaging satellite on March 23rd, 2014, not long after the March 8th disappearance of the plane. The images were provided to GA by the French Ministry of Defence. The images depict an area to the north and east of the area searched by underwater survey, and in-between areas where search and rescue operations were conducted in the wake of the plane's disappearance. The image displays the areas covered by underwater survey in yellow and the search and rescue zones in red. Extensive manual analysis of the images -- there was not enough data to use machine learning -- yielded a dozen objects that researchers were happy to classify as "probably not natural." Several of those objects were clustered in the northern parts of the areas depicted in the photos. The document is at pains to point out that it is not possible to identify the objects as airplane debris. The new analysis referred back to drift pattern analysis made on debris known to have come from MH370 and released in December 2016. That analysis suggested the search area be extended by 25,000km2. More detailed drift analysis released in April 2017 also called for a new search to the north, as did a July talk by scientists from Australia's Commonwealth Scientific and Industrial Research Organisation.

Read more of this story at Slashdot.

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Astronomers Map Atmosphere of Dying Supergiant Antares

Space.com - Thu, 17/08/2017 - 4:30pm
One day, our sun will grow so large that it will swallow Earth. To understand that future stage, scientists must look beyond the solar system to study the full evolutionary cycles of stars.
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Solar Eclipse Paintings On View in New Princeton Exhibit (Photos)

Space.com - Thu, 17/08/2017 - 4:29pm
A new exhibit at the Princeton University Art Museum was inspired by an extraordinary artist who harnessed both scientific knowledge and artistic practicality to produce enchanting paintings of solar eclipses.
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*Sonic Mania* Review: Sega Makes Sonic Super Again By Trusting the Hits (and the Fans)

Wired News - Thu, 17/08/2017 - 4:25pm
It's the best Sonic in years. Maybe ever.
Categories: Science

Hemorrhagic fevers: Countering inflammation to prevent circulatory failure

Science Daily - Thu, 17/08/2017 - 4:23pm
Hemorrhagic fevers are severe viral diseases that are often fatal. Researchers have now identified messenger substances of the immune system, which in infected mice lead to the development of shock.
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Neuroscientists discover a brain circuit dedicated to retrieving memories

Science Daily - Thu, 17/08/2017 - 4:21pm
Neuroscientists who study memory have long believed that when we recall an event, our brains turn on the same hippocampal circuit that was activated when the memory was originally formed. However, neuroscientists have now shown, for the first time, that recalling a memory requires a 'detour' circuit that branches off from the original memory circuit.
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Reed warblers have a sense for magnetic declination

Science Daily - Thu, 17/08/2017 - 4:21pm
Researchers recently showed that migratory reed warblers depend on an internal geomagnetic map to guide them on their long-distance journeys. But it wasn't clear how the birds were solving the difficult 'longitude problem,' determining where they were along the east-west axis and which way to go. The team's latest report shows birds rely on changes from east to west in magnetic declination, the angular difference between geographic north and magnetic north.
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Untangling what goes on when a relationship is being questioned

Science Daily - Thu, 17/08/2017 - 4:21pm
Knowing whether to stay in or leave a romantic relationship is often an agonizing experience and that ambivalence can have negative consequences for health and well-being. Now a new study offers insights into what people are deliberating about and what makes the decision so difficult, which could help therapists working with couples and stimulate further research into the decision-making process.
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Peroxisomes identified as 'fighters' in the battle against bacterial infections

Science Daily - Thu, 17/08/2017 - 4:21pm
Peroxisomes are required for cells in the innate immune response to bacteria and fungi. Now scientists have found that peroxisomes are necessary for proper functioning of the innate immune system, the body's first line of defense against microorganisms.
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Slowing dangerous bacteria may be more effective than killing them

Science Daily - Thu, 17/08/2017 - 4:21pm
A new study suggests it may be possible to slow dangerous infections by manipulating the messages microbes send to one another, allowing the body to defeat an infection without causing the bacteria to develop resistance to the treatment.
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Ray of hope for more abundant wheat crops

Science Daily - Thu, 17/08/2017 - 4:21pm
Using infrared gas analyzers connected to a miniature controlled environment chamber, botanists have simulated a sudden increase in sunlight following shade, and measured the time it took for the plant to regain its maximum photosynthesis efficiency and take full advantage of the extra energy from light. They found it took about 15 minutes for photosynthesis to reach maximum efficiency.
Categories: Science

China Cracks Down on VPN Vendors

Slashdot - Thu, 17/08/2017 - 4:00pm
An anonymous reader shares a BBC report: China's latest crackdown on those attempting to skirt state censorship controls has seen it warn e-commerce platforms over the sale of illegal virtual private networks (VPNs). Five websites, including shopping giant Alibaba, have been asked to remove vendors that sell VPNs. It is the latest in a series of measures from the Chinese government to maintain strict control over content. Apple has previously been asked to remove VPN apps. China's cyber-regulator the Cyberspace Administration of China (CAC) has ordered the websites to carry out immediate "self-examination and correction." "The CAC has ordered these five sites to immediately carry out a comprehensive clean-up of harmful information, close corresponding illegal account.. and submit a rectification report by a deadline," the regulator said in a statement.

Read more of this story at Slashdot.

Categories: Science

Why Plasma Is the Crown of the Solar Eclipse

Space.com - Thu, 17/08/2017 - 3:48pm
The wisps of light emanating from the solar disk during this year's total eclipse are plumes of hot, charged gas called plasma from the sun's corona. And plasma physicists are ecstatic at the chance to study this fourth state of matter.
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Antares: Red Star at the End of Its Life

Space.com - Thu, 17/08/2017 - 3:38pm
Antares is a red supergiant that one day will explode into a supernova.
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Sky-High Solar Eclipse? Here's What You Might See from an Airplane

Space.com - Thu, 17/08/2017 - 3:34pm
If you’re on an airplane flying across the U.S. during the Aug. 21 eclipse, what might you see from midair?
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For the Great American Solar Eclipse, Leave Your Camera at Home

Space.com - Thu, 17/08/2017 - 3:29pm
Solar astronomer J. McKim Malville has some advice for people planning to see the Great American Solar Eclipse on Aug. 21: Don’t photograph it.
Categories: Science

TRAPPIST-1 Planets May Be Twice As Old As Earth

Space.com - Thu, 17/08/2017 - 3:27pm
Life has had a long time to potentially get a foothold on the rocky planets circling the tiny, dim star TRAPPIST-1, a new study suggests.
Categories: Science