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Scientists at NASA's Jet Propulsion Laboratory are studying a mysterious ecosystem at one of the world's deepest undersea hydrothermal vents to get clues about what life could be like on other planetary bodies, such as Jupiter's icy moon Europa, which has a subsurface ocean. At the vents tiny shrimp are piled on top of each other, layer upon layer, crawling on rock chimneys that spew hot water. "You go along the ocean bottom and there's nothing, effectively," says Max Coleman. "And then suddenly we get these hydrothermal vents and a massive ecosystem. It's just literally teeming with life." Bacteria, inside the shrimps' mouths and in specially evolved gill covers, produce organic matter that feed the crustaceans. The particular bacteria in the vents are able to survive in extreme environments because of chemosynthesis, a process that works in the absence of sunlight and involves organisms getting energy from chemical reactions. In this case, the bacteria use hydrogen sulfide, a chemical abundant at the vents, to make organic matter. The temperatures at the vents can climb up to a scorching 842 degrees Fahrenheit (450 degrees Celsius), but waters just an inch away are cool enough to support the shrimp. The shrimp are blind, but have thermal receptors in the backs of their heads.

According to the exobiologists, these mysterious shrimps and its symbiotic bacterium may hold clues "about what life could be like on other planetary bodies." It's life that may be similar—at the basic level—to what could be lurking in the oceans of Europa, deep under the icy crust of the Jupiter moon. According to Emma Versteegh "whether an animal like this could exist on Europa heavily depends on the actual amount of energy that's released there, through hydrothermal vents." Nobody is seriously planning a landing mission on Europa yet. But the European Space Agency aims to launch its JUpiter ICy moons Explorer mission (JUICE) to make the first thickness measurements of Europa's icy crust starting in 2030 and NASA also has begun planning a Europa Clipper mission that would study the icy moon while doing flybys in a Jupiter orbit.

The NYT reports that the largest and most expensive digital billboard in Times Square stands eight stories tall and is nearly as long as a football field, spanning the entire block from 45th Street to 46th Street on Broadway and contains nearly 24 million LED pixels, each containing tiny red, blue and green lights. At a going rate of more than $2.5 million for four weeks, the megascreen ranks as one of the most expensive pieces of outdoor ad real estate on the market. A digital art exhibition by the critically acclaimed Universal Everything studio collective will animate the screen until November 24, when Google will take over as the exclusive, debut advertiser with a campaign that runs through the New Year. Size matters in Times Square,” said Harry Coghlan. “Sometimes it just comes down to wanting to stand out, and it comes down to ego."

One of the oldest forms of advertising, billboards are attracting new attention as digital displays allow for new levels of real-time interactivity. Each day, more than 300,000 pedestrians are estimated to enter the Times Square “bow tie,” where Seventh Avenue intersects with Broadway between 42nd and 47th Streets. “People go to the Grand Canyon to see the most visually stunning natural canyon in the world” says Tim Tompkins."They come to Times Square to see the most digitally striking canyon in the world,."

Christina Nunez reports in National Geographic that in the past four years, at least 29 coal-fired plants in 10 states have switched to natural gas or biomass while another 54 units, mostly in the US Northeast and Midwest, are slated to be converted over the next nine years. By switching to natural gas, plant operators can take advantage of a relatively cheap and plentiful US supply. The change can also help them meet proposed federal rules to limit heat-trapping carbon dioxide emissions from power plants, given that electricity generation from natural gas emits about half as much carbon as electricity from coal does.

But not everyone is happy with the conversions. The Dunkirk plant in western New York, slated for conversion to natural gas, is the focus of a lawsuit by environmental groups that say the $150 million repowering will force the state's energy consumers to pay for an unnecessary facility. "What we're concerned about is that the Dunkirk proceeding is setting a really, really bad precedent where we're going to keep these old, outdated, polluting plants on life support for political reasons," says Christopher Amato. Dunkirk's operator, NRG, wanted to mothball the plant in 2012, saying it was not economical to run. The utility, National Grid, said shutting it down could make local power supplies less reliable, a problem that could be fixed by boosting transmission capacity—at a lower cost than repowering Dunkirk. Meanwhile the citizens of Dunkirk are happy the plant is staying open. “We couldn’t let it happen. We would lose our tax base, we would lose our jobs, we would lose our future,” said State Sen. Catharine M. Young. “This agreement saves us. It gives us a foundation on which to build our economy. It gives us hope. This is our community’s Christmas miracle!”

Scientific American reports that simply breathing on money could soon reveal if it's the real deal or counterfeit thanks to a photonic crystal ink developed by Ling Bai and Zhongze Gu and colleagues at Southeast University in Nanjing, China that can produce unique color changing patterns on surfaces with an inkjet printer system which would be extremely hard for fraudsters to reproduce. The ink mimics the way Tmesisternus isabellae – a species of longhorn beetle – reversibly switches its color from gold to red according to the humidity in its environment. The color shift is caused by the adsorption of water vapor in their hardened front wings, which alters the thickness and average refractive index of their multilayered scales. To emulate this, the team made their photonic crystal ink using mesoporous silica nanoparticles, which have a large surface area and strong vapor adsorption capabilities that can be precisely controlled. The complicated and reversible multicolor shifts of mesoporous CPC patterns are favorable for immediate recognition by naked eyes but hard to copy. "We think the ink's multiple security features may be useful for antifraud applications," says Bai, "however we think the technology could be more useful for fabricating multiple functional sensor arrays, which we are now working towards."

Pamela Hartzband And Jerome Groopman write in an op-ed in the NYT that hidden financial forces are beginning to corrupt medical care in the US and undermine the bond of trust between doctors and patients because insurers, hospital networks and regulatory groups have put in place rewards and punishments that can powerfully influence your doctor’s decisions. "For example, doctors are rewarded for keeping their patients’ cholesterol and blood pressure below certain target levels. For some patients, this is good medicine, but for others the benefits may not outweigh the risks. Treatment with drugs such as statins can cause significant side effects, including muscle pain and increased risk of diabetes," write the authors. "Physicians who meet their designated targets are not only rewarded with a bonus from the insurer but are also given high ratings on insurer websites. Physicians who deviate from such metrics are financially penalized through lower payments and are publicly shamed, listed on insurer websites in a lower tier."

According to Hartzband and Groopman these measures are clearly designed to coerce physicians to comply with the metrics. Thus doctors may feel pressured to withhold treatment that they feel is required or feel forced to recommend treatment whose risks may outweigh benefits. Some insurers are offering a positive financial incentive directly to physicians to use specific medications. For example, WellPoint, the largest for-profit managed health care company in the Blue Cross and Blue Shield Association, recently outlined designated treatment pathways for cancer and announced that it would pay physicians an incentive of $350 per month per patient treated on the designated pathway (PDF). The authors propose a public website to reveal the hidden coercive forces that may specify treatments and limit choices through pressures on the doctor. "Medical care is not just another marketplace commodity. Physicians should never have an incentive to override the best interests of their patients."

The NYT reports that city officials say that beginning in 2015 thousands of payphones across New York City will be converted into Wi-Fi hot spots, providing free Internet access, free domestic calls using cellphones or a built-in keypad, a charging station for mobile devices and access to city services and directions. “It’s going to help us close the digital divide,” says Maya Wiley, counsel to the mayor, noting that low-income people, particularly blacks and Latinos, rely disproportionately on cellphone browsing to get online (PDF) and data charges can add up. The network will be 100 times as fast as average municipal Wi-Fi systems, so a two-hour movie can be downloaded in about 30 seconds. The kiosks’ Wi-Fi range will extend 150 feet in any direction and up to 250 devices will be able to use the network at each kiosk without diminishing service. The city hopes to install about 10,000 kiosks, each about 9.5 feet high and less than a foot wide. The first 500 CityBridge sites will be available by late 2015 to early 2016, with the construction expected to go on for six years. The contract would last for 15 years.

A successful pilot project has been in operation since 2012 but some elected officials have expressed reservations about the city’s decision to entrust the final product to CityBridge, a consortium made up of companies including Qualcomm, Comark, Control Group and Titan calling it a monopolistic arrangement. “Instead of trying to rush the process, the administration should seek a new authorizing resolution from the City Council that contemplates multiple companies,” says Letitia James, the city’s public advocate. For her part, Wiley says that she is prepared for lawsuits against the city. “In my legal opinion,” says Wiley, “this is the coolest thing ever.”

Every year the works of thousands of authors enter the public domain, but only a small percentage of these end up being widely available. So how do organizations such as Project Gutenberg choose which works to focus on? Allen Riddell has developed an algorithm that automatically generates an independent ranking of notable authors for any given year. It is then a simple task to pick the works to focus on or to spot notable omissions from the past. Riddell’s approach is to look at what kind of public domain content the world has focused on in the past and then use this as a guide to find content that people are likely to focus on in the future.

Riddell’s algorithm begins with the Wikipedia entries of all authors in the English language edition (PDF)—more than a million of them. His algorithm extracts information such as the article length, article age, estimated views per day, time elapsed since last revision, and so on. This produces a “public domain ranking” of all the authors that appear on Wikipedia. For example, the author Virginia Woolf has a ranking of 1,081 out of 1,011,304 while the Italian painter Giuseppe Amisani, who died in the same year as Woolf, has a ranking of 580,363. So Riddell’s new ranking clearly suggests that organizations like Project Guttenberg should focus more on digitizing Woolf’s work than Amisani’s. Of the individuals who died in 1965 and whose work will enter the public domain next January in many parts of the world, the new algorithm picks out TS Eliot as the most highly ranked individual. Others highly ranked include Somerset Maugham, Winston Churchill, and Malcolm X.

Josh Planos writes at The Atlantic that the isolated village of Hogewey on the outskirts of Amsterdam has been dubbed “Dementia Village” because it is home to residents who are only admitted if they’re categorized as having severe cases of dementia or Alzheimer’s disease. "There are no wards, long hallways, or corridors at the facility," writes Planos. "Residents live in groups of six or seven to a house, with one or two caretakers. Perhaps the most unique element of the facility—apart from the stealthy “gardener” caretakers—is its approach toward housing. Hogeway features 23 uniquely stylized homes, furnished around the time period when residents’ short-term memories stopped properly functioning. There are homes resembling the 1950s, 1970s, and 2000s, accurate down to the tablecloths, because it helps residents feel as if they’re home."

In Holland, everyone pays into the state health care system during their working years, with the money then disbursed to pay for later-in-life expenses - and that means living in Hogewey does not cost any more than a traditional nursing home. The inspiration came about in 1992, when Yvonne van Amerongen and another member of staff at a traditional nursing home both had their own mothers die, being glad that their elderly parents had died quickly and had not had to endure hospital-like care. A series of research and brainstorming sessions in 1993 found that humans choose to surround and interact with other like-minded people of similar backgrounds and experiences; the arrangement at Hogewey provides this by ensuring that residents with similar backgrounds continue to live closely together. On a physical level, residents at Hogewey require fewer medications; they eat better and they live longer. On a mental level, they also seem to have more joy. "The people here keep their independence, as much as they can have of it, and they stay activ," says Theo Visser. "Here they still have a life. It's not the sort of slow, quiet death you get in other places. Here everyone feels at home."

Gurvinder Gill writes at BBC that Ayan Qureshi is the world's youngest Microsoft Certified Professional after passing the tech giant's exam when he was just five years old. Qureshi's father introduced his son to computers when he was three years old. He let him play with his old computers, so he could understand hard drives and motherboards. "I found whatever I was telling him, the next day he'd remember everything I said, so I started to feed him more information," Qureshi explained. "Too much computing at this age can cause a negative effect, but in Ayan's case he has cached this opportunity." Ayan has his own computer lab at his home in Coventry, containing a computer network which he built and spends around two hours a day learning about the operating system, how to install programs, and has his own web site.

Microsoft Certified Professional (MCP) is a certification that validates IT professional and developer technical expertise through rigorous, industry-proven, and industry-recognized exams. MCP exams cover a wide range of Microsoft products, technologies, and solutions. When the boy arrived to take the Microsoft exam, the invigilators were concerned that he was too young to be a candidate. His father reassured them that Ayan would be all right on his own. "There were multiple choice questions, drag and drop questions, hotspot questions and scenario-based questions," Ayan's father told the BBC Asian Network. "The hardest challenge was explaining the language of the test to a five-year-old. But he seemed to pick it up and has a very good memory."

David Wagner writes that a predictive computer model using machine learning methods is helping to identify soldiers in the United States Army most likely to commit suicide. Computers combed through data on more than 40,000 soldiers who'd been hospitalized for mental health problems looking at 421 variables on each soldier drawn from 38 military data systems. Using a method known as “machine learning,” the researchers identified roughly two dozen factors that are most important in predicting soldiers most likely to commit suicide. The soldiers most likely to take their own lives were men with past suicidal behavior and a history of psychiatric disorders and criminal offenses, including weapons possession and verbal assaults. Soldiers with hearing loss also faced heightened risk — a strong indicator that they had suffered a head injury. So did enlisting in the Army after age 27, most likely because those soldiers had already experienced trouble finding their way in life. “There’s this group that comes to the Army later in life — they’re smart, they have skills, they tend not to be married and they have no career or have left a career to join,” Dr. Kessler said. “We don’t know why they should be at higher risk, but they appear to be.”

Murray Stein, co-author of the new study, found that among soldiers recently discharged from psychiatric hospitals, more than half of suicides were committed by just five percent of patients. “The most impressive thing is that they identified this high-risk group in the hospital, and by just focusing on one in 20 of them, you’re really dramatically improving your ability to predict,” says Dr. Mark Olfson, a professor of psychiatry at Columbia University who was not involved in the study. “Clinicians don’t do a very good job predicting suicide risk, even though we think we do.”