Source: http://gizmodo.com/secret-u-s-spy-program-targeted-cell-phones-1658573067
A secret U.S. spy program used fake cell phone towers attached to airplanes to scan citizens' cell phones and collect their data, the Wall Street Journal reports.
Source: http://www.engadget.com/2014/11/11/ehang-ghost-gopro-indiegogo/
As a recent South Park episode suggests, Parrot and DJI are the two most recognizable names in the consumer drone market right now, but they are about to face a new contender. Merely three months ago, we met Ehang who showed off its heavy-duty hexacopter at TechCrunch Beijing; and now, the Chinese company is also pushing its more affordable Ghost quadcopter onto Indiegogo. While said drone has been seeded to select e-tailers since April, Ehang co-founder Derrick Xiong said the latest offering is no longer a "beta version," but rather a retail-ready package aimed at the Western market. Most interestingly, the starting price is now just $375 -- a steal when compared to the $679 DJI Phantom 2 with similar specs.
The Ghost isn't just about pricing. First and foremost, this machine claims to be "the world's easiest drone to fly" on its website, and this is done so by replacing the traditional remote controller with a seemingly -- and perhaps overly -- straightforward smartphone interface (Android first; iOS compatibility due in March): There are buttons for taking off, landing, returning and hovering; you can tap on the map to guide the drone; there are sliding bars for adjusting the drone's orientation and altitude plus the optional camera's tilt and orientation. Thankfully, the app has a micro control pad -- surrounded by a handy compass -- to manually move the drone in its horizontal plane.
The link between the smartphone and the drone is handled by the bundled "G-Box" transmitter, which gives a 0.6-mile or 966-meter radius range. To satisfy the more capable drone users, Ehang is already developing a proprietary 8-channel remote controller for the Ghost. Yes, "proprietary" in the sense that the drone won't work with existing controllers, in order "to enhance steering safety and smooth manual control."
In addition to the above, Xiong highlighted two "breakthrough" features on the Ghost: smartphone-tilt control and an auto-follow mode that's starting to become the norm. The former is very much what it says on the tin: Once the Ghost is in the air, you can rotate and tilt your phone as if you're doing the same to the drone.
As for the auto-follow mode, don't expect the drone to follow you while you're climbing up a cliff; it can only travel horizontally so use with caution. That said, Xiong hasn't ruled out the possibility of adding auto-altitude control as more phones come with a built-in barometer. Unlike the Plexidrone due in April, the Ghost doesn't do obstacle avoidance which is no surprise given its price point, but as you can see in the above video, there's work being done on a LIDAR module that may one day allow this drone to detect its surroundings. Until then, the auto-follow feature is best used in a clear area.
Now that we've gotten the features out of the way, we can take a closer look at the drone itself. The Ghost can travel at up to 21.9 m/s, though it's capped at 4.47 m/s by default for safety reasons (for the record, the DJI Phantom 2 does 15 m/s max). Ehang claims that its machine can even fly in winds at up to 21 knots (about 11 m/s) without losing too much video quality, and it can also resist light rain. The interchangeable 5,400 mAh battery can last up to 20 minutes with the optional 2-D gimbal plus a GoPro camera installed, or up to 30 minutes without them (the Phantom 2 does 25 minutes).
As we mentioned earlier, the basic pre-assembled Ghost is up for grabs for a mere $375, and you also get four propeller guards in the box. If you want it with a 2-D gimbal to go with your own GoPro Hero3 or Hero4 camera, it'll cost you $599; or pay an extra $380 ($100 off for early birds) to have a Hero4 Silver (normally $400) bundled with the package, making it a total of $979. These will all be shipped in as early as mid-December and no later than end of January -- unless you opt for a color other than black or white, should the Indiegogo campaign reach its $150,000 stretch goal.
For the last option, there's actually no harm in considering the Phantom 2 Vision which is now only $799 (or $899 with an extra battery) and also has a two-axis camera, a traditional controller plus video stream capability to your smartphone. On the other hand, if you want to go beyond 1080p video capture while also having the option to reuse the Hero4 Silver on your next drone, then the Ghost would be a safer bet.
Filed under: Robots
Source: Indiegogo
Source: http://www.businessinsider.com/nina-tandon-of-epibone-grows-bones-from-stem-cells-2014-11
If you've ever broken a bone, you know the process to recovery is slow and painful.
Now imagine neither splint nor surgery were enough to seal the fracture. Instead, your doctor says you need a bone graft, a procedure that involves taking bone from elsewhere to fill the gap created by your injury.
You have a choice: Allow a surgeon to cut bone from another place in your body or get some new bone from a dead person. Both are risky: Bone from another body can carry disease, so doctors have to be careful about screening donors. Grafts from your own body can still be rejected and cause a painful infection or in more serious cases lead to nerve damage.
Nina Tandon wants to do away with both of these options. Instead, she wants to help you grow your own bone. From your own cells. In the exact shape and size you need.
Her company, called EpiBone, is close to making this reality. Using stem cells and a special type of incubator, she and her team have grown durable, living bones.
But the road ahead will be challenging. So far, only a few trials of bones grown in a lab have been tested in people, and few comprehensive studies of their longterm effects have been done. The field of regenerative medicine itself is only a little over a decade old.
Before she ever saw the inside of a lab, seven-year-old Tandon made a hobby out of taking apart her parents' tube TV, learning how each piece functioned and fit together, and putting it back together again.
With EpiBone, 34-year-old Tandon has made a career out of putting things back together. But this time, ins! tead of cathodes and wires, she uses body parts.
Tandon began building human tissues as a biomedical engineering student at Columbia University. She started with the strips of muscle that line the heart, and moved on to the delicate layers of skin that protect our bodies from outside elements. In 2013, she used neonatal heart cells and a bit of electrical stimulation to build a 5mm by 5mm piece of engineered cardiac tissue capable of beating.
Now she's using stem cells to build personalized bones.
"I see this as being a part of a bigger story that’s integrating biology into part of the supply chain," Tandon says. "We're starting to see biology as a technological partner way beyond just making medicines."
Every year, some 900,000 Americans undergo bone-related surgery. For people who've experienced severe trauma, lost bone to cancer, or were born with congenital defects, the EpiBone process could dramatically change how they experience surgery and how they recover.
First, Tandon and her team do a CT scan of the bone defect to get a complete picture of its exact size and shape. Then, using a procedure similar to liposuction, they take stem cells from the patient's fat cells. The cells EpiBone uses are called multipotent stem cells, meaning they are capable of developing into many different tissues, including bone.
One of the major strengths of EpiBone is that its materials come from the body's own cells, meaning it's far less likely they'll get rejected compared to foreign bone or synthetic materials.
!Once harvested, the stem cells are placed inside a sort of incubator, or bioreactor, where they can grow along a delicate frame of animal bone and cartilage. The bioreactor is "like a fancy fish tank," says Tandon, that "gives cells all the nutrients they need to make a perfect product." Inside, the cells develop into a living, custom-built implant in three to four weeks.
Because each EpiBone graft is custom-built, it can be made to fit precisely in the desired location — a huge plus compared to a bulky chunk of synthetic bone or bone cut from elsewhere in your own body. That snug fit could help shorten surgery and recovery times, says Tandon.
Biomedical engineer Warren Grayson, who leads his own laboratory working on tissue engineering at Johns Hopkins University and is a shareholder in EpiBone, led the first study showing that bone grafts made from stem cells and grown in a bioreactor could work inside a living body. His team successfully grew a human jaw bone using stem cells from fat tissue. While Grayson clearly supports the technology, he says he sees "some challenges making it work in patients."
The first challenge is getting federal approval. While Tandon has shown her technology works in animals, she hasn't yet tested it on people. The Food and Drug Administration typically requires years of lengthy trials before rubber-stamping any drug. Because EpiBone is a living technology, the barrier for getting the federal go-ahead will likely be set far higher, says Case Western Reserve University professor of biomedical engineering Steven Eppell, who's patented a different approach that doesn't require the use of living materials.
Next is cost. Because each EpiBone graft would have to be custom-built with a patient's own stem cells, it will likely be expensive. One 2012 study pegged the cost of lab-grown bones at somewhere between $10,000 and $15,000, or about three to four times the cost of a traditional procedure.
"If you're asking if I'd put my money in it, I don't think I would," says Eppell, who is likely banking on his own approach to the same problem. "But if you're asking if I think this is the technology of the future, yes, it definitely is."
Tandon's technology could be implemented in people as early as sometime in the next 5-10 years, she says. But there's a lot that would need to be shown between now and then.
So far, EpiBone has yet to test its specific process in humans, but the technique of using stem cells to grow bones has been demonstrated in humans in seven clinical studies. Still, because of the variety of techniques and studies used to test the technology in the past, it's been difficult for scientists to determine how well the technology works and if it's ready for broader applications.
Most of the studies have been small, for example, and the researchers didn't always compare the patients who participated in them with control patients who received traditional surgery or no surgery at all. For some of the earliest studies, researchers didn't maintain contact with patients long enough to perform longterm follow-ups of their procedures. And some of the surgeries involved using stem cells from bone marrow rather than fat tissue, which is the technique Tandon uses.
Tandon's team plans to test their product in human patients for the first time within 18 months. In the meantime, they must demonstrate that the technology can work. The company hired its first employees this month and are still in the process of moving into a bigger, newer space in New York City. Once they're settle! d, they' ll be spending the next year and a half doing more tests and trying to build larger, more complex bones.
"The time of building with living cells has arrived," Tandon says.
DON'T MISS: 10 Ideas That Are About To Change Medicine Forever
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Source: http://www.engadget.com/2014/11/10/google-chromebooks-education-us/
When it comes to the Chromebook, Google isn't shy about its beliefs that it is the perfect computing device for education sectors around the world. And here in the US, schools and students have started to feel the same way. In a blog post, where it highlights different ways in which educational institutions in California are using Chromebooks, Google pointed out that recent IDC numbers have its line of computers as being the best-selling device in K-12 education. The report takes into consideration laptops and tablets, so this is a notable achievement for the technology company.
Some school districts like Montgomery County, MD, for example, are using over 50,000 Chromebooks, and that's after only beginning adoption earlier this year. But Google isn't quite satisfied, as it wants Chromebook to keep reaching even more students and schools -- especially outside its home soil, where resources are particularly limited.Filed under: Desktops, Laptops, Google
Source: Google
Source: http://www.engadget.com/2014/11/11/sony-smartwatch-3-on-sale/
Source: Google Play
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