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Old 02-20-2013, 02:54 PM   #226
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Default Terrifying Video Demonstrates Bug-Sized Lethal Drones Being Developed By US Air Force



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Looks like we have the makings of a new arms race at hand. The winner will develop the tiniest lethal drone capable of blending into a crowded cityscape.

The Atlantic‘s Conor Friedersdorf points to a National Geographic piece on the future of drone technology, including one fascinating passage on how the U.S. Air Force is developing “micro-drones” the size of tiny creatures, capable of flying through major cities unnoticed.

The science writer, John Horgan, described what information he was able to access from the government:
Quote:
The Air Force has nonetheless already constructed a “micro-aviary” at Wright-Patterson for flight-testing small drones. It’s a cavernous chamber—35 feet high and covering almost 4,000 square feet—with padded walls. Micro-aviary researchers, much of whose work is classified, decline to let me witness a flight test. But they do show me an animated video starring micro-UAVs that resemble winged, multi-legged bugs. The drones swarm through alleys, crawl across windowsills, and perch on power lines. One of them sneaks up on a scowling man holding a gun and shoots him in the head.
The Air Force describes these new “micro-air” weapons as “Unobtrusive, pervasive, lethal.”

Yikes.

I share Friedersdorf’s sentiment that this video is “horrifying” — namely because it signals that drone warfare is the next arms race.

According to Horgan, however, the U.S. government “takes seriously” the potential for widespread proliferation of “micro-drone” technology among terrorists and governments:
Quote:
What, one might ask, will prevent terrorists and criminals from getting their hands on some kind of lethal drone? Although American officials rarely discuss the threat in public, they take it seriously.
[...] Exercises carried out by security agencies suggest that defending against small drones would be difficult. Under a program called Black Dart, a mini-drone two feet long tested defenses at a military range. A video from its onboard camera shows a puff of smoke in the distance, from which emerges a tiny dot that rapidly grows larger before whizzing harmlessly past: That was a surface-to-air missile missing its mark. In a second video an F-16 fighter plane races past the drone without spotting it.
The answer to the threat of drone attacks, some engineers say, is more drones.
Oh, joy!

In other words: another arms race to find the smallest possible drone that can not only attack the enemy but defend against similarly undetectable micro-drones. Rather than discourage this race to the bottom, we are actively leading the charge.

Moreover, the development of these fascinatingly small weapons provides yet another secretive weapon for the military to use without any sort of oversight.

Yes, in a world with micro-drones, casualties of American drone strikes will likely decrease, given that we’d be directly killing targets rather than obliterating them and everything around them with a missile from the sky. But the possibility for such precisely targeted surveillance and assassination, at the hands of a virtually-untraceable little “bug,” gives our government one more tool to easily evade supervision and accountability.

Link w/ video inside

we're fuct if Skynet ever becomes self aware
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Old 02-20-2013, 02:56 PM   #227
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Default Re: BTE.SE Biggest Thread Ever Science Edition

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Originally Posted by The Macho Man
They made mice that can't feel cold... I mean that's a pretty shitty power but it's kind of something.

On par with being able to grow your fingernails extremely fast.
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Old 04-03-2013, 07:13 PM   #228
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Default Re: BTE.SE Biggest Thread Ever Science Edition

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Old 04-03-2013, 07:17 PM   #229
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Default Re: BTE.SE Biggest Thread Ever Science Edition



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How would you feel about walking around covered in hagfish secretions all day? If one group of researchers gets their way, then we're looking at the fashion of the future.

The hagfish (which isn’t really a fish in the conventional sense) is a living fossil. It has undergone little to no evolution in the past 300 million years. It has an interesting and effective defence mechanism that can repel even sharks. When threatened, it releases large quantities of protein. This protein, when released into the water, forms threads that turn the immediate environment of the hagfish thick and gooey. The slime, which “smells like dirty sea water”, according to one of the researchers, deters predators from attacking the hagfish.

The researchers have found that the protein threads can be isolated from the slime (via the removal of water and mucous). The protein threads themselves are categorized as ‘intermediate filaments’. Each thread is 100 times smaller than a single human hair. These fine threads can be woven to create fabric that’s as strong as nylon or plastic. With more research, these fabrics could even be used to make clothes! Hagfish produce large amounts of slime in mere seconds. The mere efficiency of this process grants it an advantage over harvesting silk from silkworms. Furthermore, the material is much more sustainable than artificial fibers like nylon and polyester. In the words of the head researcher, Atsuko Negishi, “This work is just the beginning of our efforts to apply what we have learned from animals like hagfishes to the challenge of making high-performance materials from sustainable protein feedstocks.”

The next challenge would be to make the process feasible on an industrial scale. It’s unlikely that slime will be directly harvested from the hagfish in large amounts. Alternatively, the slime-making genes might be transplanted into bacteria, which can be cultured to provide the slime on a much larger and more feasible scale.
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Old 08-27-2013, 10:58 PM   #230
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Default Engage! Warp Drive Could Become Reality with Quantum-Thruster Physics



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DALLAS — Warp-drive technology, a form of "faster than light" travel popularized by TV's "Star Trek," could be bolstered by the physics of quantum thrusters — another science-fiction idea made plausible by modern science.

NASA scientists are performing experiments that could help make warp drive a possibility sometime in the future from a lab built for the Apollo program at NASA's Johnson Space Center in Houston.

A warp-drive-enabled spacecraft would look like a football with two large rings fully encircling it. The rings would utilize an exotic form of matter to cause space-time to contract in front of and expand behind them. Harold "Sonny" White, a NASA physicist, is experimenting with these concepts on a smaller scale using a light-measuring device in the lab. [Warp Drives and Transporters: How 'Star Trek' Tech Works (Infographic)]

"We're looking for a change in path length of the photon on the interferometer, because that would be potential evidence that we're generating the effect we're looking for," White told SPACE.com. "We've seen, in a couple different experiments with several different analytic techniques, a change in optical-path length. We're making one leg of the interferometer seem a little shorter because of this device being on, versus the device being off. That doesn't mean that it's what we're looking for."

While these results are intriguing, they are in no way definitive proof that warp drive could work, White said. The scaled-down experiments are just a first step toward understanding if these concepts can be taken out of the realm of theory and applied practically.

Quantum thrust through space-time

Quantum-thruster physics, another technology White is looking into at NASA, could be the key to creating the fuel needed for a warp drive.

These electric "q-thrusters" work as a submarine does underwater, except they're in the vacuum of space, White told the crowd here at Starship Congress on Aug. 17. The spacecraft is theoretically propelled through space by stirring up the cosmic soup, causing quantum-level perturbations. The resulting thrust is similar to that created by a submersible moving through water.

The technology produces negative vacuum energy, a key ingredient for an exotic-matter-powered warp-drive engine.

"The physics models that tell us how to construct a q-thruster are the same models we'll use to generate, design and build a negative vacuum generator," White said. "The quantum thrusters might be a propulsion manifestation of the physics, like the big ring around the spacecraft. If you looked in there, there might be 10,000 of these little cans that are the negative vacuum generators."

White wants to try to apply the quantum-thruster physics models the researchers have been working with in the lab to their work with warp drive.

"We have measured a force in several test devices which is a consequence of perturbing the state of the quantum vacuum," White said. The effect has been small but significant in his experimentation. Going forward, White hopes to do more robust testing to possibly magnify those claims.

Do the time warp

The warp-drive ship itself would never be going faster than the speed of light, but the warped space-time around it could help the spacecraft achieve an effective speed of 10 times the speed of light within the confines of White's concept.

When first proposed by Mexican physicist Miguel Alcubierre in 1994, the warp drive would have required huge, unreasonable amounts of energy, but White's work brought those numbers down. Previous studies extrapolated that the drive would need energy equal to the mass energy of Jupiter.

"In the early epoch of the universe, there was a very short period known as inflation," said Richard Obousy, president of Icarus Interstellar. "We believe that during that inflationary period, space-time itself expanded at many times the speed of light, so there are tantalizing questions when you look at nature as a teacher. Is this something that can be duplicated around the vicinity of a spacecraft?"

Now, White thinks the drive could be powered by a collection of exotic mass about the size of NASA's Voyager 1 probe if the rings housing the mass were shaped like a donut and oscillate over time.

Follow Miriam Kramer @mirikramer and Google+. Follow us @Spacedotcom, Facebook and Google+. Original article on SPACE.com.

The Top 10 Star Trek Technologies
Superfast Spacecraft Propulsion Concepts (Images)
Gallery: Visions of Interstellar Starship Travel
Copyright 2013 SPACE.com, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

Warp speed ahead
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Old 10-11-2013, 11:51 PM   #231
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Default The First Flying Car Is Here, Goes On Sale 2015.



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The first flying cars are set to go on sale to the public as early as 2015. Terrafugia has announced its Transition design, which is part sedan, part private jet with two seats, four wheels and wings that fold up so it can be driven like a car, will be on sale in less than two years. The Massachusetts-based firm has also unveiled plans for a TF-X model that will be small enough to fit in a garage, and won’t need a runway to take off. Would you buy one?

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Old 10-12-2013, 11:03 AM   #232
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Default Nuclear fusion laser-beam experiment yields surprising results



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The daydream of science-fiction fans and supervillains everywhere has inched one step closer to reality: Scientists have demonstrated a new technique for nuclear fusion, the process that fuels stars like the sun, that doesn't produce hazardous particles.

The new experiment coaxed a boron atom to fuse with a hydrogen nucleus, using a little help from incredibly powerful laser and proton beams. The fusion produced alpha particles, which are more easily converted to usable energy than the high-energy neutrons produced by prior fusion methods.

High-energy neutrons can also produce radiation if they fuse with other nuclei to form radioactive elements.

Fusion
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Old 10-12-2013, 11:05 AM   #233
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Default Researchers Bioengineer Bacteria That Poops Out Gasoline



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Korean researchers have engineered a new strain of E. coli that can produce a suitable substitute for gasoline. And as they quite rightly point out, bacteria that poops out petroleum could be some valuable shit.

Digging up fossil resources carries tremendous environmental, monetary, and geopolitical costs, which means figuring out a way to feed the world's huge addiction to gasoline without unearthing crude could have a tremendous impact.

Bacteria, meanwhile, has already proven itself capable of amazing things. It's responsible for making your booze boozy, and in recent years it has been used to produce everything from gold to diesel fuel. When it comes to producing biofuels, we're probably most familiar with bacteria that produce ethanol, but as the Korean researchers point out in a new study published in Nature, petroleum has a 30-percent higher energy content than traditional biofuels.

Valuable shit
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Old 10-12-2013, 11:07 AM   #234
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Default New shape-shifting metals discovered



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A new shape-changing metal crystal is reported in the journal Nature, by scientists at University of Minnesota.

It is the prototype of a new family of smart materials that could be used in applications ranging from space vehicles to electronics to jet engines.

Called a "martensite", the crystal has two different arrangements of atoms, switching seamlessly between them.

It can change shape tens of thousands of times when heated and cooled without degrading, unlike existing technology.

Currently, martensite metals are made of an alloyed mixture of nickel and titanium.

They have the remarkable ability to "remember" their shape and even after being bent will return to their original form. For this, they are called "shape memory" metals.

Metal
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Old 10-12-2013, 11:11 AM   #235
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Default Radical OOKP surgery implants tooth with lens into blind man's eye; restores sight



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A BLIND British man has had his sight restored after pioneering surgery that involved implanting one of his teeth into his eye.

Ian Tibbetts, 43, who first damaged his eye in an industrial accident when scrap metal ripped his cornea in six places, had his sight restored by the radical operation, chronicled in the new BBC documentary The Day I Got My Sight Back.

The surgery allowed Mr Tibbetts to see his four-year-old twin sons, Callum and Ryan, for the first time, a moment he describes as "ecstasy".

The procedure, called osteo-odonto-keratoprothesis, or OOKP, was conducted by ophthalmic surgeon Christopher Liu at the Sussex Eye Hospital in Brighton, Sussex. Mr Tibbetts and his wife Alex agreed to the revolutionary surgery after all other options had failed, leaving Mr Tibbetts depressed and out of work.

The complex surgery is a two-part procedure. First, the tooth and part of the jaw are removed, and a lens is inserted into the tooth using a drill. The tooth and lens are then implanted under the eye socket. After a few months, once the tooth has grown tissues and developed a blood supply, comes the second step: part of the cornea is sliced open and removed and the tooth is stitched into the eye socket. Since the tooth is the patient’s own tissue, the body does not reject it.

"The tooth is like a picture frame which holds this tiny plastic lens," documentary maker Sally George told the BBC.

After the bandages came off, Mr Tibbetts' sight gradually returned, and he saw his sons' faces for the first time.

Video inside

Last edited by Anti Hero : 10-12-2013 at 11:15 AM.
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Old 10-12-2013, 11:15 AM   #236
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Default Scientists Used 3D Printed Microscopic Cages To Confine Bacteria In Tiny "Zoos"



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Using a laser to activate cross-linking in a gelatin mold containing randomly scattered bacterial cells, researchers can “trap” the microbes in designated areas, dictating the 3-dimensional structure of the populations. The study, published today (October 7) in Proceedings of the National Academy of Sciences, could allow biologists to study the role of population architecture in cellular communication, while still allowing the flow of chemical messages.

“In microbial populations, there’s cooperation and there’s cheating and there’s competition, and so understanding how these very complicated things actually function is not something you can just do in a petri dish or a bulk broth,” said bioengineer Bryan Kaehr of Sandia National Laboratories in Albuquerque, NM. “In order for us to ever really understand cell communication in a meaningful way, you really have to organize populations like this—at this scale, the scale of cells.”

The work comes from Kaehr’s graduate advisor, chemist and bioengineer Jason Shear at the University of Texas at Austin, who has been working in 3-D fabrication using biological materials for about 10 years. Shear and his colleagues had previously used the cross-linking technique—which uses a laser to activate a photosensitizer that promotes bond formation between the molecules of the mold—to build molecular “houses” of bovine serum albumin (BSA), into which they seeded bacteria that could swim into the various “rooms.” The researchers could then warm the houses to 37°C, causing the “doors” of the house to swell shut, keeping the bacteria in place.

“Although [the house is] physically restrictive, it’s chemically permissive,” said Shear. “These walls will transmit important biological signals, like quorum-sensing signals and antibiotics.”

But such a procedure is obviously limited to motile species of bacteria, and it left a lot to chance in terms of which bacteria ended up in which rooms of the house. Now, the researchers have tackled these problems by 3-D printing the molecular houses around the bacterial cells that are already embedded in a gelatin mold. The researchers simply cultured bacteria in liquid gelatin and then allowed the mixture to cool and solidify. “It’s basically Jell-O with things suspended in it,” said Shear. Then, based on where the bacteria settled during this process, the team designed a molecular house to segregate the bacteria as they wanted and subjected the gel to the cross-linking action of the 3-D-printing laser.

“This is the beauty of the technique—that it allows you to create any 3-D structure,” said engineer Aleksandr Ovsianikov of the Vienna University of Technology in Austria, who last month used a similar approach to grow human osteosarcoma cells in a 3-D mold, but was not involved in the present study. “So you have total freedom [of design].”

In a proof-of-concept experiment, the researchers examined the role of population structure in bacteria’s ability to resist an antibiotic. The team used the technology to nest a population of Staphylococcus aureus, a bacterium that is normally susceptible to β-lactam antibiotics, within a surrounding population of Pseudomonas aeruginosa, which produces an enzyme that defends against β-lactam antibiotics. The two bacteria are often found together in the human body—in chronic wounds, for example, or the lungs of patients with cystic fibrosis—and the researchers wanted to ask: “Could one bacterium actually protect the other?” said microbiologist Marvin Whiteley, a UT-Austin collaborator of Shear’s and an author on the paper. “We were able to show that you definitely could in regard to antibiotic sensitivity,” he said. And notably, it took just a few P. aeruginosa per picoliter to protect the inner S. aureus population from ampicillin, a β-lactam antibiotic.

Whiteley was excited by the results, but even more so by the technique, which he said could bring some much-needed quantitative measurements to microbiology. “Analytic chemistry is a great thing, and microbiology needs to use it more.”

Kaehr added that the technology could have applications in other areas. “Their work here focuses on microbial communities and bacteria, but this is really a problem in just understanding multicellularity,” he said. “This is a technique [that] will hopefully reveal new biology that you otherwise couldn’t understand.”

Furthermore, Ovsianikov noted, the system can be adapted to do more than simply trap cells within a structured environment. The same laser setup can be used to immobilize molecules at precise locations within the environment, to provide adhesion sites, or to carve out channels in the gel, rather than build walls. “This is a tool which potentially allows you to cross-link your gel, dress up your gel with biomolecules, or create channels in the same way,” said Ovsianikov. “This is a tool which is much more than 3-D printing.”

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Old 10-12-2013, 11:18 AM   #237
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Default How Infamous Hydroelectric Dam Changed Earth’s Rotation



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“Powerful” doesn’t really do this amazing (and VERY controversial) structure justice. Since the $30 billion project was announced, Chinese officials have faced heavy scrutiny from both scientists and environmental activists like. Many believe that the dam will ultimately result in catastrophe. Some concerns include the dam trapping pollution, spawning earthquakes and landslides, uprooting citizens (more than 1.3 million people have already been forced to relocate), and destroying historical locations – along with the habitats of endangered animals. (The government finally conceded that the project was ill conceived – after years of dubbing the dam one of the most spectacular pieces of engineering in Chinese history – but the damage is already done.)

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Old 10-12-2013, 11:22 AM   #238
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Default Seeing Light in a New Light: Scientists Create Never-Before-Seen Form of Matter



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Harvard and MIT scientists are challenging the conventional wisdom about light, and they didn't need to go to a galaxy far, far away to do it.

Working with colleagues at the Harvard-MIT Center for Ultracold Atoms, a group led by Harvard Professor of Physics Mikhail Lukin and MIT Professor of Physics Vladan Vuletic have managed to coax photons into binding together to form molecules -- a state of matter that, until recently, had been purely theoretical. The work is described in a September 25 paper in Nature.
The discovery, Lukin said, runs contrary to decades of accepted wisdom about the nature of light. Photons have long been described as massless particles which don't interact with each other -- shine two laser beams at each other, he said, and they simply pass through one another.
"Photonic molecules," however, behave less like traditional lasers and more like something you might find in science fiction -- the light saber.
"Most of the properties of light we know about originate from the fact that photons are massless, and that they do not interact with each other," Lukin said. "What we have done is create a special type of medium in which photons interact with each other so strongly that they begin to act as though they have mass, and they bind together to form molecules. This type of photonic bound state has been discussed theoretically for quite a while, but until now it hadn't been observed.
"It's not an in-apt analogy to compare this to light sabers," Lukin added. "When these photons interact with each other, they're pushing against and deflect each other. The physics of what's happening in these molecules is similar to what we see in the movies."
To get the normally-massless photons to bind to each other, Lukin and colleagues, including Harvard post-doctoral fellow Ofer Fisterberg, former Harvard doctoral student Alexey Gorshkov and MIT graduate students Thibault Peyronel and Qiu Liang couldn't rely on something like the Force -- they instead turned to a set of more extreme conditions.
Researchers began by pumped rubidium atoms into a vacuum chamber, then used lasers to cool the cloud of atoms to just a few degrees above absolute zero. Using extremely weak laser pulses, they then fired single photons into the cloud of atoms.
As the photons enter the cloud of cold atoms, Lukin said, its energy excites atoms along its path, causing the photon to slow dramatically. As the photon moves through the cloud, that energy is handed off from atom to atom, and eventually exits the cloud with the photon.
"When the photon exits the medium, its identity is preserved," Lukin said. "It's the same effect we see with refraction of light in a water glass. The light enters the water, it hands off part of its energy to the medium, and inside it exists as light and matter coupled together, but when it exits, it's still light. The process that takes place is the same it's just a bit more extreme -- the light is slowed considerably, and a lot more energy is given away than during refraction."
When Lukin and colleagues fired two photons into the cloud, they were surprised to see them exit together, as a single molecule.
The reason they form the never-before-seen molecules?
An effect called a Rydberg blockade, Lukin said, which states that when an atom is excited, nearby atoms cannot be excited to the same degree. In practice, the effect means that as two photons enter the atomic cloud, the first excites an atom, but must move forward before the second photon can excite nearby atoms.
The result, he said, is that the two photons push and pull each other through the cloud as their energy is handed off from one atom to the next.
"It's a photonic interaction that's mediated by the atomic interaction," Lukin said. "That makes these two photons behave like a molecule, and when they exit the medium they're much more likely to do so together than as single photons."
While the effect is unusual, it does have some practical applications as well.
"We do this for fun, and because we're pushing the frontiers of science," Lukin said. "But it feeds into the bigger picture of what we're doing because photons remain the best possible means to carry quantum information. The handicap, though, has been that photons don't interact with each other."
To build a quantum computer, he explained, researchers need to build a system that can preserve quantum information, and process it using quantum logic operations. The challenge, however, is that quantum logic requires interactions between individual quanta so that quantum systems can be switched to perform information processing.
"What we demonstrate with this process allows us to do that," Lukin said. "Before we make a useful, practical quantum switch or photonic logic gate we have to improve the performance, so it's still at the proof-of-concept level, but this is an important step. The physical principles we've established here are important."
The system could even be useful in classical computing, Lukin said, considering the power-dissipation challenges chip-makers now face. A number of companies -- including IBM -- have worked to develop systems that rely on optical routers that convert light signals into electrical signals, but those systems face their own hurdles.
Lukin also suggested that the system might one day even be used to create complex three-dimensional structures -- such as crystals -- wholly out of light.
"What it will be useful for we don't know yet, but it's a new state of matter, so we are hopeful that new applications may emerge as we continue to investigate these photonic molecules' properties," he said.

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Old 10-12-2013, 11:28 AM   #239
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Default Vindskip (or Windship) and it could achieve fuel savings Of60%AndReduceEmissionsBy80%



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Of the exciting tech stories to cross our desk this week, innovations that help people get from point A to B stand out. Take for example, a young man who made an elevator from a bicycle, or a group of researchers who designed an RFID ring that gives the wearer access to a subway, or virtual simulation of Elon Musk's Hyperloop that shows it could work or a wind-powered ship that has a hull that works as an airfoil. Read on.

Norwegian designers at Lade AS have designed a unique ship that they say would achieve fuel savings of 60 percent and reduce emissions by 80 percent. Their Vindskip (or Windship) has a specially designed hull that works like a symmetrical airfoil harnessing wind somewhat like the wing of a plane to generate "lift." The ship would also use a liquefied natural gas-powered electrical generator for additional power.

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Old 10-12-2013, 11:33 AM   #240
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Default Solar panels could destroy U.S. utilities, according to U.S. utilities



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That is not wild-eyed hippie talk. It is the assessment of the utilities themselves.

Back in January, the Edison Electric Institute — the (typically stodgy and backward-looking) trade group of U.S. investor-owned utilities — released a report [PDF] that, as far as I can tell, went almost entirely without notice in the press. That’s a shame. It is one of the most prescient and brutally frank things I’ve ever read about the power sector. It is a rare thing to hear an industry tell the tale of its own incipient obsolescence.

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