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Limitless learning Universe
Nature and the universe are a wonder. Insufficiently explored...
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Preinstalled #Malware Targeting Mobile Users #smartphone #Google #Xiaomi #Samsung #tech #security

Preinstalled #Malware Targeting Mobile Users #smartphone #Google #Xiaomi #Samsung #tech #security | Limitless learning Universe | Scoop.it
The Check Point Mobile Threat Prevention has recently detected a severe infection in 38 Android devices, belonging to a large telecommunications company and a multinational technology company. While this is not unusual, one detail of the attacks stands out. In all instances, the malware was not downloaded to the device as a result of the …
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#Fascism will soon be on our doorstep if you don’t act immediately: #Yale historian #history repeats itself

#Fascism will soon be on our doorstep if you don’t act immediately: #Yale historian #history repeats itself | Limitless learning Universe | Scoop.it
History gives us a bunch of cases where democratic republics became authoritarian regimes....
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#Brain Activity At The Moment of Death #Neurology #Science #NDE 

#Brain Activity At The Moment of Death #Neurology #Science #NDE  | Limitless learning Universe | Scoop.it
What happens in the brain when we die? Canadian researchers Loretta Norton and colleagues of the University of Western Ontario examine this grave question in a new paper: Electroencephalographic Recordings During Withdrawal of Life-Sustaining Therapy Until 30 Minutes After Declaration of Death Norton et al. examined frontal EEG recordings from four critically ill patients at …
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A Splash of River Water Now Reveals the #DNA of All Its Creatures #eDNA #science #biology

A Splash of River Water Now Reveals the #DNA of All Its Creatures #eDNA #science #biology | Limitless learning Universe | Scoop.it

Quick and inexpensive DNA sampling of a river, stream, or lake can now divulge what fish or other animals live there. This rapidly growing environmental DNA, or eDNA, technology is proving to be a game-changing conservation tool.


Via Integrated DNA Technologies
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Researchers flip a magnetic memory cell with a light pulse at record speed #tech #computer #science

Researchers flip a magnetic memory cell with a light pulse at record speed #tech #computer #science | Limitless learning Universe | Scoop.it
University of Minnesota electrical and computer engineering researchers have created a magnetic tunnel junction that can be switched by a pulse of light lasting one trillionth of a second—a new record. The magnetic tunnel junction is critical to information technology advances with the termination of Moore's law, a principle that has ruled the microelectronics industry for five decades.

This advancement holds promise for the development of new, optically controlled, ultrafast magnetic devices collectively called spintronics (electronics that combine optical and magnetic nanotechnologies). These devices could lead to innovations in the storage, processing, and communication of information. An example of such innovation would be the development of a system that, like the human brain, can both store and analyze a large amount of data simultaneously.The details of the device and the tests conducted on it are reported in a paper published recently in Physical Review Applied, a journal of the American Physical Society.

Typically, the magnetic tunnel junction has a "sandwich-like" structure comprised of two layers of magnetic materials with an insulating layer, called barrier, in the middle. Information is written on the magnetic material by reversing the magnetization of one of the layers. This reversing process often involves spiral motion in the spinning electrons, called spin processing. However, there is a limitation on how fast the spin processing can be. The brakes are applied at roughly 1.6GHz, a current speed record that is much slower than silicon transistors. To enable faster writing speeds, the limitations on speed have to be overcome.

Via Mariaschnee
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 #Intel develops tool to find if #bios is changed by #CIA #tech #github #privacy #spying

 #Intel develops tool to find if #bios is changed by #CIA #tech #github #privacy #spying | Limitless learning Universe | Scoop.it
chipsec - Platform Security Assessment Framework
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#Jaen city in #Spain possible #Atlantis #history #Plato #archeology #science #students

#Jaen city in #Spain possible #Atlantis #history #Plato #archeology #science #students | Limitless learning Universe | Scoop.it
Estimad@s Amig@s: Anoche regresé a casa después de un par de semanas intensivas de filmación del nuevo documental de National Geographic sobre la Atlántida donde he sido consultado como asesor experto en Atlantología Histórico-Científica para la parte (la mayor parte del documental) que abarca el Centro-Suroeste de Iberia y la zona del estrecho y Golfo…
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#Vault7: #Wikileaks reveals details of #CIA's hacks of #Android, #iPhone #Windows, #Linux, #MacOS, and even Samsung TVs

#Vault7: #Wikileaks reveals details of #CIA's hacks of #Android, #iPhone #Windows, #Linux, #MacOS, and even Samsung TVs | Limitless learning Universe | Scoop.it
You name it, the CIA seems to have hacked it - and left their backdoors behind for others to use
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The #future of #AI is #neuromorphic. Meet the scientists building digital 'brains' for your phone #science #tech

The #future of #AI is #neuromorphic. Meet the scientists building digital 'brains' for your phone #science #tech | Limitless learning Universe | Scoop.it
Canadian startup Applied Brain Research is one of a wave of companies developing neuromorphic chips – which have several advantages over traditional CPUs

Via Scott Turner
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A Giant Neuron Has Been Found Wrapped Around the Entire Circumference of the #Brain #biology #science

A Giant Neuron Has Been Found Wrapped Around the Entire Circumference of the #Brain #biology #science | Limitless learning Universe | Scoop.it
For the first time, scientists have detected a giant neuron wrapped around the entire circumference of a mouse's brain, and it's so densely connected across both hemispheres, it could finally explain the origins of consciousness.

Using a new imaging technique, the team detected the giant neuron emanating from one of the best-connected regions in the brain, and say it could be coordinating signals from different areas to create conscious thought.

This recently discovered neuron is one of three that have been detected for the first time in a mammal's brain, and the new imaging technique could help us figure out if similar structures have gone undetected in our own brains for centuries.

At a recent meeting of the Brain Research through Advancing Innovative Neurotechnologies initiative in Maryland, a team from the Allen Institute for Brain Science described how all three neurons stretch across both hemispheres of the brain, but the largest one wraps around the organ's circumference like a "crown of thorns".

You can see them highlighted in the image at the top of the page.

Lead researcher Christof Koch told Sara Reardon at Nature that they've never seen neurons extend so far across both regions of the brain before.

Via Wildcat2030, Miloš Bajčetić, Tania Gammage
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compressedpiano's comment, February 28, 10:51 PM
This is so great!
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The Scientific Community Is Facing an Existential Crisis #science & idiot #Trump

The Scientific Community Is Facing an Existential Crisis #science & idiot #Trump | Limitless learning Universe | Scoop.it
Dr. Rush Holt talks Donald Trump, the increasing politicization of science, and what his community needs to do next.
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Researchers obtain supersolidity state experimentally #physics #science

Researchers obtain supersolidity state experimentally #physics #science | Limitless learning Universe | Scoop.it
When matter is cooled to near absolute zero, intriguing phenomena emerge. These include supersolidity, where crystalline structure and frictionless flow occur together. ETH researchers have succeeded in realising this strange state experimentally for the first time.

Solid, liquid or gas are the three clearly defined states of matter. It is difficult to imagine that substances could simultaneously exhibit properties of two of these states. Yet, precisely such a phenomenon is possible in the realm of quantum physics, where matter can display behaviours that seem mutually exclusive.

Supersolidity is one example of such a paradoxical state. In a supersolid, atoms are arranged in a crystalline pattern while at the same time behaving like a superfluid, in which particles move without friction.

Until now, supersolidity was merely a theoretical construct. But in the latest issue of Nature, a group of researchers led by Tilman Esslinger, professor of quantum optics at the Institute for Quantum Electronics, and Tobias Donner, senior scientist at the same institute, report the successful production of a supersolid state.

Via Mariaschnee
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Chiral #superconductivity experimentally demonstrated for the first time #science #physics

Chiral #superconductivity experimentally demonstrated for the first time #science #physics | Limitless learning Universe | Scoop.it

Scientists have found that a superconducting current flows in only one direction through a chiral nanotube, marking the first observation of the effects of chirality on superconductivity. Until now, superconductivity has only been demonstrated in achiral materials, in which the current flows in both directions equally.

 

The team of researchers, F. Qin et al., from Japan, the US, and Israel, have published a paper on the first observation of chiral superconductivity in a recent issue of Nature Communications.

Chiral superconductivity combines two typically unrelated concepts in a single material: Chiral materials have mirror images that are not identical, similar to how left and right hands are not identical because they cannot be superimposed one on top of the other. And superconducting materials can conduct an electric current with zero resistance at very low temperatures.

 

Observing chiral superconductivity has been experimentally challenging due to the material requirements. Although carbon nanotubes are superconducting, chiral, and commonly available, so far researchers have only successfully demonstrated superconducting electron transport in nanotube assemblies and not in individual nanotubes, which are required for this purpose.

 

"The most important significance of our work is that superconductivity is realized in an individual nanotube for the first time," coauthor Toshiya Ideue at The University of Tokyo told Phys.org. "It enables us to search for exotic superconducting properties originating from the characteristic (tubular or chiral) structure."

 

The achievement is only possible with a new two-dimensional superconducting material called tungsten disulfide, a type of transition metal dichalcogenide, which is a new class of materials that have potential applications in electronics, photonics, and other areas. The tungsten disulfide nanotubes are superconducting at low temperatures using a method called ionic liquid gating and also have a chiral structure. In addition, it's possible to run a superconducting current through an individual tungsten disulfide nanotube.

 

When the researchers ran a current through one of these nanotubes and cooled the device down to 5.8 K, the current became superconducting—in this case, meaning its normal resistance dropped by half. When the researchers applied a magnetic field parallel to the nanotube, they observed small antisymmetric signals that travel in one direction only. These signals are negligibly small in nonchiral superconducting materials, and the researchers explain that the chiral structure is responsible for strongly enhancing these signals.

 

"The asymmetric electric transport is realized only when a magnetic field is applied parallel to the tube axis," Ideue said. "If there is no magnetic field, current should flow symmetrically. We note that electric current should be asymmetric (if the magnetic field is applied parallel to the tube axis) even in the normal state (non-superconducting region), but we could not see any discernible signals in the normal state yet, interestingly, it shows a large enhancement in the superconducting region."


Via Dr. Stefan Gruenwald
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Attacking #Nexus 9 with Malicious #Headphones #tech #security #CIA #hacking #NSA #gadgets

Attacking #Nexus 9 with Malicious #Headphones #tech #security #CIA #hacking #NSA #gadgets | Limitless learning Universe | Scoop.it
A critical severity vulnerability in Nexus 9 (CVE-2017-0510) with a very unusual attack vector - headphone jack. Exploiting this vulnerability allows one to leak stack canaries, derandomize ASLR, conduct a factory reset, and even access HBOOT, allowing for communication with internal System-on-Chips (SoCs) through I2C.
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#Japan #Tsunami: Powerful Photos of the #Earthquake and #Nuclear disaster that hit six years ago #Japan #history

Japan Tsunami: Powerful Photos of the Earthquake and Nuclear disaster that hit six years ago

Via Ton Kraanen
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Best Buy Geek Squad Informant Use Has #FBI on Defense in Child-Porn Case

Best Buy Geek Squad Informant Use Has #FBI on Defense in Child-Porn Case | Limitless learning Universe | Scoop.it
Questions linger about law-enforcement honesty, unconstitutional searches, underhanded use of informants and twisted logic in a
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#FF #WikiLeaks to provide technology companies with #CIA #hacking tools #tech clever move or #Pandora box?

#FF #WikiLeaks to provide technology companies with #CIA #hacking tools #tech clever move or #Pandora box? | Limitless learning Universe | Scoop.it
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House Passes #NASA Authorization Act #subsidie $19.5 billion #astronomy #space

House Passes #NASA Authorization Act #subsidie $19.5 billion #astronomy #space | Limitless learning Universe | Scoop.it
by Douglas Messier Managing Editor For the first time in more than six years, Congress has passed an authorization act for NASA that calls

Via Allen Taylor
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Allen Taylor's curator insight, March 9, 1:51 PM
More details on NASA's new budget, including how much money is going to various priorities.
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Paleo diet revamped? Prehistoric plaque reveals what #Neanderthals ate. #archeology #science

Paleo diet revamped? Prehistoric plaque reveals what #Neanderthals ate. #archeology #science | Limitless learning Universe | Scoop.it
If you are what you eat, Neanderthals might have been a diverse, flexible bunch … just like their diets.

Via Kenneth Weene
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Kenneth Weene's curator insight, March 8, 10:38 PM
Fascinating piece; of course, I love anthropology. One takeaway: Don't be a Neanderthal, brush and floss regularly. 
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#NASA #Mars is far more likely to have had life than we ever thought #history #science

#NASA #Mars is far more likely to have had life than we ever thought #history #science | Limitless learning Universe | Scoop.it

Scientists have found that Mars was likely far wetter – and capable of supporting life – than we previously thought.

 

A new study, which simulated Martian meteorites to understand more about its ancient environment, suggests that our history of the planet's surface might be entirely wrong.

 

Until now, a specific mineral found in Martian meteorites was used as proof that the planet had an ancient, dry environment. But in fact it might have contained hydrogen, which may see the history of the Red Planet rewritten into one far more covered with water.


Via Levin Chin, Dr. Stefan Gruenwald
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Seven #Travel Pests Worse than #Bedbugs #Sandfleas #Chiggers

Seven #Travel Pests Worse than #Bedbugs #Sandfleas #Chiggers | Limitless learning Universe | Scoop.it
While bedbugs can be an annoyance, there are pests that are much more dangerous. Spiders, scorpions, fire ants and mosquitoes can all create troubles.

Via Kenneth Weene
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Kenneth Weene's curator insight, March 7, 10:20 AM
This is enough to put me off of travel, but to be honest not for long. Let's just say there are lots of dangers out there and I prefer to stay at hotels that do their best to keep me safe or at least they should hire a decent exterminator. Do you know how to protect yourself from bedbugs? First thing, don't bring your bags into the hotel until you have scouted the room. Go in the room, strip back all the covering of a corner of the mattress, and press the channel around the mattress rim open so you can see if there are any little critters scurrying there. If there are, hie thee to another hotel, not just another room in that one. Oh, and have a great night. 
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Icy Lakes in #Greenland Drain into the Ocean #melting #climate

Icy Lakes in #Greenland Drain into the Ocean #melting #climate | Limitless learning Universe | Scoop.it
The discovery will help scientists better understand how the Greenland ice sheet is melting
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How the #Brain Resets During Sleep

How the #Brain Resets During Sleep | Limitless learning Universe | Scoop.it
triking electron microscope pictures from inside the brains of mice suggest what happens in our own brain every day: Our synapses – the junctions between nerve cells – grow strong and large during the stimulation of daytime, then shrink by nearly 20 percent while we sleep, creating room for more growth and learning the next day.

The four-year research project published today in Science offers a direct visual proof of the “synaptic homeostasis hypothesis” (SHY) proposed by Drs. Chiara Cirelli and Giulio Tononi of the Wisconsin Center for Sleep and Consciousness.

This hypothesis holds that sleep is the price we pay for brains that are plastic and able to keep learning new things.

When a synapse is repeatedly activated during waking, it grows in strength, and this growth is believed to be important for learning and memory. According to SHY, however, this growth needs to be balanced to avoid the saturation of synapses and the obliteration of neural signaling and memories. Sleep is believed to be the best time for this process of renormalization, since when asleep we pay much less attention to the external world and are free from the “here and now.”

When synapses get stronger and more effective they also become bigger, and conversely they shrink when they weaken. Thus, Cirelli and Tononi reasoned that a direct test of SHY was to determine whether the size of synapses changes between sleep and wake. To do so, they used a method with extremely high spatial resolution called serial scanning 3-D electron microscopy.

The research itself was a massive undertaking, with many research specialists working for four years to photograph, reconstruct, and analyze two areas of cerebral cortex in the mouse brain. They were able to reconstruct 6,920 synapses and measure their size.

The team deliberately did not know whether they were analyzing the brain cells of a well-rested mouse or one that had been awake. When they finally “broke the code” and correlated the measurements with the amount of sleep the mice had during the six to eight hours before the image was taken, they found that a few hours of sleep led on average to an 18 percent decrease in the size of the synapses. These changes occurred in both areas of the cerebral cortex and were proportional to the size of the synapses.

The scaling occurred in about 80 percent of the synapses but spared the largest ones, which may be associated with the most stable memory traces.

Via Miloš Bajčetić, Tania Gammage
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Nevermore Sithole's curator insight, March 10, 2:37 AM
How the Brain Resets During Sleep
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Alternative strategy for a safe rechargeable #battery #faster #durable #renewables #tech #science #cheap #laptop

Alternative strategy for a safe rechargeable #battery #faster #durable #renewables #tech #science #cheap #laptop | Limitless learning Universe | Scoop.it
The advent of a Li+ or Na+ glass electrolyte with a cation conductivity σi > 10−2 S cm−1 at 25 °C and a motional enthalpy ΔHm = 0.06 eV that is wet by a metallic lithium or sodium anode is used to develop a new strategy for an all-solid-state, rechargeable, metal-plating battery. During discharge, a cell pla
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How# scientists made this 95 million-year-old octopus look good #archeology #history

How# scientists made this 95 million-year-old octopus look good #archeology #history | Limitless learning Universe | Scoop.it
The magnificently preserved fossil was not immediately so distinct. See how a fossil can be prepared for display.

Via Mariaschnee
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