Herbal Viagra actually contains the real thing



































IF IT looks too good to be true, it probably is. Several "herbal remedies" for erectile dysfunction sold online actually contain the active ingredient from Viagra.












Michael Lamb at Arcadia University in Glenside, Pennsylvania, and colleagues purchased 10 popular "natural" uplifting remedies on the internet and tested them for the presence of sildenafil, the active ingredient in Viagra. They found the compound, or a similar synthetic drug, in seven of the 10 products – cause for concern because it can be dangerous for people with some medical conditions.












Lamb's work was presented last week at the American Academy of Forensic Sciences meeting in Washington DC.












This article appeared in print under the headline "Herbal Viagra gets a synthetic boost"


















































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Obama calls for replacing sequester with balanced approach






WASHINGTON: US President Barack Obama urged Congress on Saturday to replace automatic across-the-board spending cuts known as the sequester with what he called "a balanced approach," which combines "smart" cuts with reforms.

The appeal came the day after the president, complying with the law, signed an order bringing arbitrary cuts worth US$85 billion into force as well as a report by his Office of Management and Budget detailing the cuts to each agency.

Obama has called the sweeping cuts, stemming from a 2011 debt ceiling agreement, "dumb".

The across-the-board cuts were triggered automatically following the failure of efforts to clinch a deal with Republicans on cutting the deficit.

But in his weekly radio and Internet address, he argued there was still time to find a smarter solution to the nation's debt problem.

"I still believe we can and must replace these cuts with a balanced approach - one that combines smart spending cuts with entitlement reform and changes to our tax code that make it more fair for families and businesses without raising anyone's tax rates," Obama said.

He said the budget deficit, now exceeding US$1 trillion, can be reduced without laying off workers or forcing parents and students to pay the price.

"A majority of the American people agree with me on this approach - including a majority of Republicans," the president argued. "We just need Republicans in Congress to catch up with their own party and the rest of the country."

Under the sequester, 800,000 civilian employees of the Defence Department will go on a mandatory furlough one day a week and the navy will trim voyages. The deployment of a second aircraft carrier to the Gulf has been cancelled.

Defence contractors may be forced to lay off workers and some federal health spending could be hit.

Cuts will also be made to special needs education and preschool for less well-off children. National parks could close and wait times could hit four hours at airport customs posts.

But the president insisted that despite public bickering, Republicans and Democrats actually had more in common than they were willing to let on.

"I know there are Republicans in Congress who would actually rather see tax loopholes closed than let these cuts go through," Obama said. "And I know there are Democrats who'd rather do smart entitlement reform than let these cuts go through. There's a caucus of common sense. And I'm going to keep reaching out to them to fix this for good."

- AFP/xq



Read More..

Why teens are tiring of Facebook




To understand where teens like to spend their virtual time nowadways, just watch them on their smartphones. Their world revolves around Instagram, the application adults mistook for an elevated photography service, and other apps decidely less old-fashioned than Mark Zuckerberg's main kingdom.

And therein lies one of Facebook's biggest challenges: With more than 1 billion users worldwide and an unstated mission to make more money, Facebook has become a social network that's often too complicated, too risky, and, above all, too overrun by parents to give teens the type of digital freedom or release they crave.

For tweens and teens, Instagram -- and, more recently, SnapChat, an app for sending photos and videos that appear and then disappear -- is the opposite of Facebook: simple, seemingly secret, and fun. Around schools, kids treat these apps like pot, enjoyed in low-lit corners, and all for the undeniable pleasure and temporary fulfillment of feeling cool. Facebook, meanwhile, with its Harvard dormroom roots, now finds itself scrambling to keep up with the tastes of the youngest trendsetters -- even as it has a foothold on millions of them since it now owns Instagram.

Asked about the issue, a Facebook spokesperson would only say, "We are gratified that more than 1 billion people, including many young people, are using Facebook, to connect and share."

The data doesn't exist to slap a value on Facebook's teen problem. But we know -- from observing teens, talking to parents and analysts, and from a few company statements -- that age doesn't become Facebook with this group.

In recent weeks, Facebook has told us twice about its teen-appeal problem. When it filed its annual report, it warned investors for the first time that younger users are turning to other services, particularly Instagram, as a substitute for Facebook.

Then, earlier this week, Chief Financial Officer David Ebersman admitted that Instagram, an application he described as popular among the "younger generation," is a "formidable competitor" to Facebook. Which seems odd until you realize that the profit-hungry Facebook isn't yet making a dime from Instagram.

"What we do know is that Instagram is already a very popular service that continues to grow rapidly, and we believe, based on the information that we have, that it's quite popular among these kinds of users that you're asking about, the younger generation. It is very important for Facebook to build products that are useful to those users, and to build products that they feel comfortable ... they can have a good experience with. Definitely high on the list of priorities for us."

The under-13 tween crowd, including one CNET editor's daughter, technically isn't allowed to use the application, as dictated by the terms of service and a federal restriction (although the law is changing this July in ways that will make it easier for kids to join). Yet kids found Instagram anyway, largely because their parents wouldn't let them join Facebook, argues Altimeter Group principal analyst Brian Solis. Teens 13 and up joined Instagram, he said, because Facebook became "too great" a social network where they're now connected to their grandparents.

Isn't it ironic, as Alanis Morissete would say, that Facebook, the one-time underground drug of choice for college kids is now so readily available and acceptable that we all do it in broad daylight, and worse, at work? Sure, a 12-year-old skateboarder can derive some value from Facebook, but in the whitewashed kind of way that the rest of us use LinkedIn.

"We take pictures of food and landscapes," Solis said, "but teenagers use [Instagram] to share pictures of themselves ... the more you share, the greater the reaction, and the more you push outside comfort zones, the more people react."


A teen's Instagram account.



(Credit:
Screenshot by Michelle Meyers/CNET)

Tweens and teens are addicted to the idea of eliciting more reactions in the form of likes, followers, and comments, he said. They employ like-for-like photo tactics, use a myriad of hashtags to get their pictures in front of more users, and promote their desire for additional followers in their profiles.

Ascertaining the extent of Instagram's popularity with teens is particularly tricky -- until you talk to them. And some data on the phenomena does exist. Nielsen, one of the few companies to measure teens' online behavior, can only track web usage for this youngest demographic. The analytics firm told me that Instagram was the top photography website among U.S. teens ages 12 to 17 with 1.3 million teens visiting the website during December 2012. By the analytics firm's count, roughly one in 10 online teens in the U.S. visited Instagram in their browser during the month.

Anecdotally, the evidence overwhelmingly points to Instagram as the preferred social network of tweens and teens. A personal relationship provided me with a direct lens to view how two teenage boys used the application in their everyday lives. I also chatted with other kids, some the children of friends, and others I found through friends of friends.


Beth Blecherman's 14-year-old son, who lives in the San Francisco Bay Area, downloaded Instagram when he was 13 because all of his friends were using it as their social network. Marisa, a 16-year-old girl who attends Cathedral City High School in southern California, has been using Instagram for more than a year. She said that a majority of her high school friends are using the application. And a San Diego friend's 12-year-old son is so hooked on the application that he was in tears when his account was temporarily suspended earlier this year.

"Teens recognized Instagram as a social network before anyone else," Solis said. "Everyone else treated it as a camera app."

At the same time, Instagram could disappear from teen consciousness just as easily at it arrived. Remember: Instagram was only 17 months old when Zuckerberg bought it in the weeks prior to Facebook's IPO last May. Parents are starting to understand that their kids haven't developed a fascination with the application to share artistic photos of landscapes and architecture. All of the teens I spoke to have watchful parents who keep an observant eye on their Instagram accounts.


Teens searching for a cyber hangout to call their own Adam McLane, a former youth pastor who hosts educational social media seminars for parents of teens in San Diego, told me that his sessions are dominated by talk of Instagram, with frenzied parents fearful that their innocent young ones are participating in unsavory activities such as bullying or posting inappropriate photos.


This Snapchat message will self-destruct in seven seconds.



(Credit:
Snapchat)

The parent factor alone could send kids fleeing to other applications such as Snapchat, Pheed, and Tumblr, all of which appear to have strong teen followings. Investors are betting on Snapchat in particular, which sends more than 60 million short-lived messages daily, because they don't want to miss out on the next Facebook.

"Teens are looking for a place they can call their own," Danah Boyd, a senior researcher that studies how young people use social media for Microsoft, told me. "Rather than all flocking en masse to a different site, they're fragmenting across apps and engaging with their friends using a wide array of different tools. ... A new one pops up each week. What's exciting to me is that I'm seeing teenagers experiment."

This experimental nature puts Facebook in the tricky position of reacting to the whims of transitory teens. Take Facebook's impromptu release of Poke, a mobile phone application, modeled after Snapchat, for sending messages that self-destruct moments later. The company's most reactionary move, however, was its surprise purchase of Instagram, an impulse buy that ultimately cost about $715 million.

Now that Instagram has more than 100 million active users, Facebook's impulsive pickup looks like a smart one. But the dangerous reality is that Facebook is bleeding attention to an application with no advertising model, nor does the social network even understand how Instagram ties in with its own applications.

Facebook doesn't know what teens want. Ebersman said as much, albeit in less direct terms:

"Facebook is a very young company in terms of the age of our employees, and I am hopeful that continues to be an asset for us in terms of having our finger on the pulse of what matters to that particular constituency of users and how we can provide products to satisfy them."

Put that way, Facebook's saving grace might be that its employees are also tiring of Facebook.


Read More..

Black Hole Spins at Nearly the Speed of Light


A superfast black hole nearly 60 million light-years away appears to be pushing the ultimate speed limit of the universe, a new study says.

For the first time, astronomers have managed to measure the rate of spin of a supermassive black hole—and it's been clocked at 84 percent of the speed of light, or the maximum allowed by the law of physics.

"The most exciting part of this finding is the ability to test the theory of general relativity in such an extreme regime, where the gravitational field is huge, and the properties of space-time around it are completely different from the standard Newtonian case," said lead author Guido Risaliti, of the Harvard-Smithsonian Center for Astrophysics (CfA) and INAF-Arcetri Observatory in Italy. (Related: "Speedy Star Found Near Black Hole May Test Einstein Theory.")

Notorious for ripping apart and swallowing stars, supermassive black holes live at the center of most galaxies, including our own Milky Way. (See black hole pictures.)

They can pack the gravitational punch of many million or even billions of suns—distorting space-time in the region around them, not even letting light to escape their clutches.

Galactic Monster

The predatory monster that lurks at the core of the relatively nearby spiral galaxy NGC 1365 is estimated to weigh in at about two million times the mass of the sun, and stretches some 2 million miles (3.2 million kilometers) across-more than eight times the distance between Earth and the moon, Risaliti said. (Also see "Black Hole Blast Biggest Ever Recorded.")

Risaliti and colleagues' unprecedented discovery was made possible thanks to the combined observations from NASA's high-energy x-ray detectors on its Nuclear Spectroscopic Telescope Array (NuSTAR) probe and the European Space Agency's low-energy, x-ray-detecting XMM-Newton space observatory.

Astronomers detected x-ray particle remnants of stars circling in a pancake-shaped accretion disk surrounding the black hole, and used this data to help determine its rate of spin.

By getting a fix on this spin speed, astronomers now hope to better understand what happens inside giant black holes as they gravitationally warp space-time around themselves.

Even more intriguing to the research team is that this discovery will shed clues to black hole's past, and the evolution of its surrounding galaxy.

Tracking the Universe's Evolution

Supermassive black holes have a large impact in the evolution of their host galaxy, where a self-regulating process occurs between the two structures.

"When more stars are formed, they throw gas into the black hole, increasing its mass, but the radiation produced by this accretion warms up the gas in the galaxy, preventing more star formation," said Risaliti.

"So the two events—black hole accretion and formation of new stars—interact with each other."

Knowing how fast black holes spin may also help shed light how the entire universe evolved. (Learn more about the origin of the universe.)

"With a knowledge of the average spin of galaxies at different ages of the universe," Risaliti said, "we could track their evolution much more precisely than we can do today."


Read More..

Sequester: What Will Happen, What Won't Happen












When it comes to critical elements of the sequester timeline, not much is known -- because federal agencies have been tight lipped.


Asked when specific effects will be felt, officials at three federal departments declined to discuss the timing of sequester cuts and their consequences. Some departments were waiting for President Obama's Friday night sequester order and subsequent guidance they expected to receive from the Office of Management and Budget before talking about what would and wouldn't happen and when.


Read more: 57 Terrible Consequences of the Sequester


"There's no calendar of dates for specific actions or cuts on specific dates," Department of Health and Human Services public affairs officer Bill Hall told ABC News. "Again, these cuts need to be applied equally across all agency programs, activities and projects. There will be wide variation on when impacts will occur depending on a given program."


Some cuts won't be felt for a while because they have to do with government layoffs, which require 30 days notice, in most cases.


For instance, the Federal Aviation Administration won't begin layoffs until at least April 7, one FAA official estimated.


But some cuts don't involve furloughs, and could conceivably be felt immediately.


The Department of Homeland Security declined to comment on the timeline of layoffs to cybersecurity contractors and first responders funded through states, as well as limited Coast Guard operations and cuts to FEMA disaster relief.


The Department of Housing and Urban Development said it could not comment on cuts to housing vouchers, rent assistance for AIDS patients, maintenance for housing projects.






Andrew Harrer/Bloomberg/Getty Imag











Sequestration Deadline: Obama Meets With Leaders Watch Video











Sequester Countdown: The Reality of Budget Cuts Watch Video





The Department of Health and Human Services declined to discuss the specific timing of cuts to Head Start services, low-income mental-health services, AIDS/HIV testing, and inpatient substance-abuse treatment.


Read More: Automatic Cuts Could Hurt on Local Level


So even as the sequester hits, we still don't know when some of its worst effects will be felt.


Here's what we do know:


What Will Happen Saturday


      Air Force Training. At a briefing Friday, Deputy Defense Secretary Ashton Carter warned that "effective immediately, Air Force flying hours will be cut back."


More from Carter, via ABC News' Luis Martinez: "What does that mean for national security? What it means is that as the year goes on, apart from Afghanistan, apart from nuclear deterrence through two missions we are strictly protecting, the readiness of the other units to respond to other contingencies will gradually decline. That's not safe. And that we're trying to minimize that in every way we possibly can."


      Closed Doors at the Capitol. ABC News' Sunlen Miller reports that Capitol Police issued a memo announcing it would have to close some entrances to the Capitol, writing: "At this time it is anticipated that the U.S. Capitol Police will be required to close some entrance doors and exterior checkpoints, and either suspend or modify the hours of operation for some of the U.S. Capitol Complex posts located inside and outside of the CVC and Office Buildings."


      Capitol Janitor Furloughs. After President Obama warned that janitors at the Capitol will be furloughed, ABC News' Sunlen Miller reported that was not entirely true: The Senate sergeant at arms, Terrance Gainer, told ABC News that no full-time salaried Capitol Police officers would face furloughs or layoffs at this time. They will, however, see a "substantial reduction in overtime," Gainer told ABC News.


      Delayed Deployment for USS Truman Aircraft Carrier. This has already happened, the Associated Press reported Friday morning: "One of the Navy's premiere warships, the aircraft carrier USS Harry S. Truman, sits pier-side in Norfolk, Va., its tour of duty delayed. The carrier and its 5,000-person crew were to leave for the Persian Gulf on Feb. 8, along with the guided-missile cruiser USS Gettysburg."






Read More..

'Good' and 'bad' skin bugs dictate who gets spots



































The secret to clear skin may lie in the cocktail of strains of a common bacterium that lives on your skin.











Propionibacterium acnes bacteria are abundant in the pores on everyone's face. They have been implicated as a cause of pimples, but why they aggravate spottiness in some people but not others has been a mystery.













The discovery that there are "good" and "bad" types of P. acnes offers a clue. It also opens up the possibility of developing treatments customised to the flora of an individual's skin.












The condition affects 85 per cent of teenagers and 11 per cent of adults, and as anyone with acne can testify, existing treatments such as antibiotics have limited effectiveness and can make skin dry out or cause redness and peeling.











Strains sequenced













A team led by Huiying Li of the University of California, Los Angeles, has analysed bacteria from the nose skin of 49 people with acne and 52 controls. "Not all P. acnes strains were created equal," says Li.











Of the thousands of P. acnes strains the researchers identified, the most common 66 were investigated in depth by completely sequencing their genomes. Of these, 63 strains were found in people with and without acne, but two appeared to be linked to acne, and one to healthy skin.













One of the "bad" strains was uniquely found on spotty skin; the other was also found in 16 per cent of samples from people without acne. The "good" strain was hardly found in people with acne but was present in a fifth of those with clear skin.











Rogue genes













Uniquely, the "bad" strains had extra groups of genes derived from viruses. These rogue genes can potentially aggravate acne and include one which binds the bugs unusually tightly to human cells. Because spots are caused by our immune system going into overdrive in response to the presence of P. acnes, resulting in inflammation, this "tightness" gene "means it can trigger a stronger immune response", says Li.












The "good" strain, meanwhile, lacked these genes. Instead, it had genetic components enabling it to recognise and destroy the rogue genes, which means it doesn't cause the skin to become inflamed and spots don't erupt.












Since not all the individuals with clear skin had the "good" strains and not all with acne had the "bad" ones, other factors – such as the tendency of the immune system to over-react or an individual's genetic make-up – might dictate whether good or bad strains grow on skin. In other words, the experiment does not demonstrate what came first – the bad strains of bacteria or the acne, a point raised by researchers not involved in the work.












"Whether the strains are cause or effect is not addressed by this study," says Martin Blaser of New York University. "Nevertheless, this is an important first step in understanding the role of P. acnes in disease."











Probiotics for acne













Li says further investigations are under way in the same people to find out how the balance of good, bad and neutral strains changes over time. She is hopeful that it might be possible to develop creams customised to each person's unique cocktail of skin bacteria to prevent or treat acne.












"Good strains might be used as probiotics to stop skin blemishes before they start, much like yogurt contains good strains of bacteria to fight off bad bugs in the gut," she says.












Another possibility might be drugs that kill only the bad strains. At present, acne is treated with antibiotics that kill all bacteria on the skin, including harmless ones that helpfully prevent nasty strains from taking hold. Exclusively killing the bad strains would be more beneficial, says Li.












Journal reference: Journal of Investigative Dermatology, doi.org/kng


















































If you would like to reuse any content from New Scientist, either in print or online, please contact the syndication department first for permission. New Scientist does not own rights to photos, but there are a variety of licensing options available for use of articles and graphics we own the copyright to.




































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Italy's lefti-wing leader suggests loose alliance to end deadlock






ROME: Italian left-wing leader Pier Luigi Bersani on Friday held out the prospect of forming a minority government based on a loose alliance in parliament following inconclusive elections, as Europe puts on pressure for a quick solution.

"I am calling it a government of change, which I would take the responsibility of leading," the Democratic Party leader said in an interview with La Repubblica daily, warning that Italy's "governability (is) at risk".

"Like all governments, it will ask for the confidence of parliament," he said.

But Bersani rejected out of hand the possibility of a grand coalition arrangement with Silvio Berlusconi's centre-right forces, after a new anti-establishment party upset the traditional balance of power between Italy's right and left by winning big in the polls early this week.

Bersani said the government he is proposing would have key objectives, including easing austerity measures, creating jobs, helping the poorest and cutting government costs -- echoing at least some of the demands made by the anti-establishment Five Star Movement.

But since a Democratic Party-led coalition did not manage majorities in both houses of parliament, the new government would depend on the support of other parties in the upper house -- an arrangement that analysts have warned would prove "highly unstable" at a time when Italy is facing an acute economic crisis.

Stefano Folli, editorialist for Il Sole 24 Ore business daily, said it would "hand over the government" to the whims of the populist Five Star Movement.

Most analysts say there will have to be new elections within months to resolve the impasse.

It is unclear whether the Five Star Movement would support Bersani after its leader, former comedian Beppe Grillo, said his movement "is not going to give a vote of confidence to the Democratic Party or to anyone else".

Not everyone in his movement agrees with this rejection, however.

The party captured a quarter of the vote with a campaign that mixed advocacy on environmental causes and grassroots local issues with a crusade against political sleaze, drawing many austerity-weary Italians to its ranks.

The party has spooked Europe with its promise to hold a referendum on the euro and cancel Italy's debts, prompting European leaders to urge Italy to stick to its fiscal commitments and form a government as soon as possible.

A deputy from German Chancellor Angela Merkel's Christian Democratic Union (CDU) called on Friday for Italy to leave the euro if it could not stick to EU rules after its inconclusive election.

"If one can't succeed in persuading the people of a country that they have to stick to the commitments they have themselves signed up to in terms of how the common currency works, then you can't demand new elections from outside, but the country must return to its own currency," said Klaus-Peter Willsch.

Markets were jittery in trading on Friday, with the Milan index plunging 1.58 percent -- the worst performer among major European stock markets.

The technocratic cabinet of outgoing premier Mario Monti, who won praise abroad for his budget discipline and economic reforms but became increasingly unpopular at home, will stay in place until a new government is formed.

A centrist coalition led by Monti came in fourth place, garnering far too little support to be able to cobble a majority in alliance with the left.

Bersani meanwhile ruled out another possibility -- the formation of an emergency coalition with his long-time arch-rival Berlusconi -- saying: "The hypothesis of a grand understanding does not exist and will never exist".

The scandal-tainted Berlusconi on Friday made an appearance at his appeal trial in Milan against a tax fraud conviction linked to his business empire.

A verdict in the case is expected later this month, along with a ruling in another trial in which Berlusconi is a defendant on charges of having sex with an underage prostitute and abuse of office while he was still prime minister.

Italy's new parliament must convene by March 15 at the latest under the rules of the constitution. After parliament meets, formal negotiations can begin with Italian President Giorgio Napolitano on a new government.

Guglielmo Meardi, a professor at Warwick Business School in Britain, said Italy was "used to parliamentary instability... and should stay on the rails until the autumn, when fresh elections could be held."

- AFP/al



Read More..

Why Google built the pricey, powerful Chromebook Pixel



Chrome OS needed a push. Is the Chromebook Pixel it?

Chrome OS needed a push. Is the Chromebook Pixel it?



(Credit:
Josh Miller/CNET)


It's been a week now since Google unveiled the Chromebook Pixel, and the reactions have settled into a rough consensus: nice laptop, but not for you.


"The Chromebook Pixel is just too much machine for the software," the Wirecutter's Nathan Edwards writes in a representative take. At CNET, Seth Rosenblatt's review makes a similar point: "the Chromebook Pixel's high price and cloud OS limitations make it impossible to recommend for the vast majority of users."


All of which raises the question -- why release it? Surely Google knew that by introducing a high-end laptop for the bare-bones Chrome operating system, it would court incredulity even from enthusiastic early adopters. When you're charging $1,300+ for a Web browser, "Just look at that screen!" only goes so far.


But while we were scratching our heads over Google's intentions with the Pixel, company executives laid out a reasonably persuasive case for bringing it to market. J.R. Raphael, in a sharp piece at Computerworld, has the relevant quote from Google's vice president of engineering, Linus Upson. Emphasis Raphael's:


The Chromebook Pixel ... brings together the best in hardware, software and design to inspire the next generation of Chromebooks. With the Pixel, we set out to rethink all elements of a computer in order to design the best laptop possible, especially for power users who have fully embraced the cloud.

There are two big ideas there. Let's take them in turn.


The Pixel is meant to inspire. No one denies that this Chromebook turns heads. Much of the Pixel's unveiling last week was given over to discussion of the laptop's design and construction -- the etched glass used in the trackpad, the subtle placement of the microphones, the playful light bar on the exterior that changes color to reflect battery life. And that's to say nothing of that screen, the 4.3 million-pixel showstopper from which the laptop gets its name.


Compare that to the bargain-basement laptops that have carried Chrome OS until now. The operating system began life on the CR-48, a rubbery brick of a prototype that appeared to take its design cues from the Brutalists. The first consumer models, from Samsung and Acer, offered only modest improvements in style and performance. What the early Chromebooks lacked in style they made up in value -- starting at $349, they offered a bargain to workers and students who lived primarily in the Web browser and wanted more power than they could get from a
tablet.


The problem is that Chromebooks have yet to escape the perception that they are inferior, meant for consumers who simply can't afford better. Google's vision of the cloud extends to the entire market -- the low end, the high end, and everything in between. Until now, there hasn't been a high-end Chromebook. As a result, you're unlikely to ever step into a meeting and see an executive carrying one under her arm.


Walk around the Google campus in Mountain View and you're struck by how many Googlers are working on MacBooks. But of course they are: Apple laptops are built with style, sophistication, and power -- adjectives few would ascribe to the Samsung Series 5. The Pixel marks an attempt to meet style with style and power with power -- to show Web developers, manufacturing partners, and its own employees that Chrome is a serious operating system deserving of a first-class computer.


The Pixel could inspire developers to build fast, full-featured Web apps that take advantage of touch -- a feature rapidly becoming standard on laptops. It could inspire manufacturing partners to launch sleeker, more powerful Chromebooks themselves, at prices above the $250 and $350 they have been able to charge to date. And it could inspire Googlers to ditch their MacBooks in favor of a homegrown solution that has its own advantages. That's a best-case scenario, sure -- but if you're Google, it's one worth pursuing.


Which leads us to the second big reason Google says it developed the Pixel:


The Pixel is a tool for power users. When Google isn't selling the design of the Chromebook, it's selling features meant for people who spend all day on their laptops. The hardware boots up in seconds, connects to Verizon's 4G LTE network, and comes with 1 terabyte of Google Drive storage for three years -- which ordinarily costs $1,800.


At the same time, to say the Pixel is for "power users" feels like a case of marketing materials getting ahead of reality. Power users like laptops that are light; the Pixel weighs 3.3 pounds, or a third of a pound heavier than the 13-inch
MacBook Air. Power users need battery life; the Pixel tops out around five hours, the MacBook gets closer to seven.


And while workers whose companies use Google Apps will feel at home on the Pixel, enough is missing from Chrome OS to make it difficult to use as a primary computer. Having used it for a week now, I find myself constantly missing the native apps that help me work: Evernote, OmniFocus, Tweetbot, 1Password, Rdio. In most cases I can make do with a combination of Web apps and Chrome extensions, but the experience is inferior -- and belies the notion that this is a computer for needy, greedy "power users."


It turns out that the Pixel is more of a computer for what you might call cloud zealots -- users determined to store almost of all of their data online, in exchange for the added convenience and security. It's easy to see why Google would want to cultivate cloud zealots -- more Web surfing equals more advertising revenue. But Chrome OS makes average users -- to say nothing of power users -- constantly aware of the trade-offs they are making. (For a good list, see David Pogue.)


Still, improvements to Chrome OS over the past four years mean that users are making fewer trade-offs than they used to. HTML5 is improving, and Web apps along with it, and the result is that it's now unfair to dismiss Chromebooks as mere Web browsers. Browsing is still the thing they do best, but you can do real work on a Chromebook (I wrote this piece on a Pixel, not all that much more slowly than I might have on my MacBook Air). In time, you might be able to work as fast on a Chromebook as you can on a more traditional laptop.


Ultimately, the Pixel is a case of a company putting its money where its mouth is. If Chrome OS was ever to be anything more than a curiosity -- and let's face it, it's almost four years old and hasn't exactly set the computing world on fire -- Google had to do something dramatic. Some of that can be done on the software side, but a world-class operating system needs great hardware. Great hardware pushes operating systems forward.


And so the reviews that say the Pixel isn't for most people are right -- Google itself all but admits it. That doesn't mean it's a failure, though. If a year from now Samsung and Acer are releasing higher-end Chromebooks of their own, and Web apps have come closer to reaching parity with native software, and more Googlers are using Pixels as their main machines, Google can call its expensive laptop a success. Chrome OS finally has the concept
car to advance its vision of pure cloud computing. Now the company can only watch and wait as it sees what the world makes of the concept.

Read More..

Scarred Duckbill Dinosaur Escaped T. Rex Attack


A scar on the face of a duckbill dinosaur received after a close encounter with a Tyrannosaurus rex is the first clear case of a healed dinosaur wound, scientists say.

The finding, detailed in the current issue of the journal Cretaceous Research, also reveals that the healing properties of dinosaur skin were likely very similar to that of modern reptiles.

The lucky dinosaur was an adult Edmontosaurus annectens, a species of duckbill dinosaur that lived in what is today the Hell Creek region of South Dakota about 65 to 67 million years ago. (Explore a prehistoric time line.)

A teardrop-shaped patch of fossilized skin about 5 by 5 inches (12 by 14 centimeters) that was discovered with the creature's bones and is thought to have come from above its right eye, includes an oval-shaped section that is incongruous with the surrounding skin. (Related: "'Dinosaur Mummy' Found; Have Intact Skin, Tissue.")

Bruce Rothschild, a professor of medicine at the University of Kansas and Northeast Ohio Medical University, said the first time he laid eyes on it, it was "quite clear" to him that he was looking at an old wound.

"That was unequivocal," said Rothschild, who is a co-author of the new study.

A Terrible Attacker

The skull of the scarred Edmontosaurus also showed signs of trauma, and from the size and shape of the marks on the bone, Rothschild and fellow co-author Robert DePalma, a paleontologist at the Palm Beach Museum of Natural History in Florida, speculate the creature was attacked by a T. rex.

It's likely, though still unproven, that both the skin wound and the skull injury were sustained during the same attack, the scientists say. The wound "was large enough to have been a claw or a tooth," Rothschild said.

Rothschild and DePalma also compared the dinosaur wound to healed wounds on modern reptiles, including iguanas, and found the scar patterns to be nearly identical.

It isn't surprising that the wounds would be similar, said paleontologist David Burnham of the University of Kansas Biodiversity Institute, since dinosaurs and lizards are distant cousins.

"That's kind of what we would expect," said Burnham, who was not involved in the study. "It's what makes evolution work—that we can depend on this."

Dog-Eat-Dog

Phil Bell, a paleontologist with the Pipestone Creek Dinosaur Initiative in Canada who also was not involved in the research, called the Edmontosaurus fossil "a really nicely preserved animal with a very obvious scar."

He's not convinced, however, that it was caused by a predator attack. The size of the scar is relatively small, Bell said, and would also be consistent with the skin being pierced in some other accident such as a fall.

"But certainly the marks that you see on the skull, those are [more consistent] with Tyrannosaur-bitten bones," he added.

Prior to the discovery, scientists knew of one other case of a dinosaur wound. But in that instance, it was an unhealed wound that scientists think was inflicted by scavengers after the creature was already dead.

It's very likely that this particular Edmontosaurus wasn't the only dinosaur to sport scars, whether from battle wounds or accidents, Bell added.

"I would imagine just about every dinosaur walking around had similar scars," he said. (Read about "Extreme Dinosaurs" in National Geographic magazine.)

"Tigers and lions have scarred noses, and great white sharks have got dings on their noses and nips taken out of their fins. It's a dog-eat-dog world out there, and [Edmontosaurus was] unfortunately in the line of fire from some pretty big and nasty predators ... This one was just lucky to get away."

Mysterious Escape

Just how Edmontosaurus survived a T. rex attack is still unclear. "Escape from a T. rex is something that we wouldn't think would happen," Burnham said.

Duckbill dinosaurs, also known as Hadrosaurs, were not without defenses. Edmontosaurus, for example, grew up to 30 feet (9 meters) in length, and could swipe its hefty tail or kick its legs to fell predators.

Furthermore, they were fast. "Hadrosaurs like Edmontosaurus had very powerful [running] muscles, which would have made them difficult to catch once they'd taken flight," Bell said.

Duckbills were also herd animals, so maybe this one escaped with help from neighbors. Or perhaps the T. rex that attacked it was young. "There's something surrounding this case that we don't know yet," Burnham said.

Figuring out the details of the story is part of what makes paleontology exciting, he added. "We construct past lives. We can go back into a day in the life of this animal and talk about an attack and [about] it getting away. That's pretty cool."


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Sequester Set to Trigger Billions in Cuts











Nobody likes the sequester.


Even the word is enough to send shivers of fiscal panic, or sheer political malaise, down the spines of seasoned politicians and news reporters. And today, the sequester will almost certainly happen, a year and a half after its inception as an intentionally unpalatable event amid the stalemate of the debt-limit crisis in 2011.


Automatic budget cuts will be triggered across federal agencies, as President Obama will be required to order sequestration into effect before midnight Friday night. The federal bureaucracy will implement its various plans to save the money it's required to save.


Now that the sequester will probably happen, here are some questions and answers about it:


1. HOW BIG IS IT?


The cuts were originally slated for $109 billion this year, but after the fiscal-cliff deal postponed the sequester for two months by finding alternate savings, the sequester will amount to $85 billion over the remainder of the year. Over the rest of the year, nondefense programs will be cut by nine percent, and defense programs will be cut by 13 percent.


If carried out over 10 years (as designed), the sequester will amount to $1.2 trillion in total.


2. WHAT WILL BE CUT, SPARED?


Most government programs will be cut, including both defense and nondefense spending, with the cuts distributed evenly (by dollar amount) over those two categories.




Some vital domestic entitlements, however, will be spared. Social Security checks won't shrink; nor will Veterans Administration programs. Medicare benefits won't get cut, but payments to providers will shrink by two percent. The Children's Health Insurance Program (CHIP), food stamps, Pell grants, and Medicaid will all be shielded from the sequester.


But lots of things will get cut. The Obama administration has warned that a host of calamities will befall vulnerable segments of the population.


3. WHY DOES IT HAVE TO BE SO BAD?


Questions persist over whether or not it really does.


The sequester will mean such awful things because it forces agencies to cut things indiscriminately, instead of simply stripping money from their overall budgets.


But some Republicans, including Oklahoma Sen. Tom Coburn, have suggested that federal agencies have plenty of flexibility to implement these cuts while avoiding the worst of the purported consequences. Louisiana Gov. Bobby Jindal accused President Obama of trying to "distort" the severity of the sequester. The federal government will still spend more money than it did last year, GOP critics of sequester alarmism have pointed out.


The White House tells a different story.


According to the Office of Management and Budget, the sequestration law forces agency heads to cut the same percentage from each program. If that program is for TSA agents checking people in at airports, the sequester law doesn't care, and Homeland Security Secretary Janet Napolitano can't do anything about it.


Agency heads do have some authority to "reprogram" funds, rearranging their money to circumvent the bad effects. But an OMB official told ABC News that "these flexibilities are limited and do not provide significant relief due to the rigid nature of the way in which sequestration is required by law to be implemented."


4. WHEN WILL THE WORST OF IT START?


Not until April -- but some of the cuts could be felt before then.






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Space miners hope to build first off-Earth economy


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SingPost sets up S$10m fund to help low-wage employees






SINGAPORE: SingPost is setting up a $10 million "Inclusivity Fund", which will benefit its low-wage workers.

Over 70 per cent of the fund will go to helping the workers cope with the rising cost of living. This will include retention awards and enhancements to their wages.

Part of the fund will also go into training to help them upgrade their skills.

Staff with school-going children can also stand to benefit from bursaries and scholarships.

The fund will be disbursed over five years and benefit some 3,400 workers.

The company will also be investing about S$30 million to enhance its delivery and improve processes.

- CNA/xq



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This sapphire smartphone screen is strong, strong, strong



Virtually indestructable sapphire smartphone screen




BARCELONA, Spain--The smartphone screen on the iPhone above may look like it's made of glass, but it isn't. It's made of sapphire. That's right, the same aluminum oxide compound (AL2O3) better known for brilliant blue gemstones that dangle from ears and throats and can cost a small fortune.


But this particular screen bears little resemblance to Earth-mined rock. Synthetically grown from a "mother" or starter crystal, companies that manufacture synthetic sapphire melt and cut the material (with diamond-tipped saws) into wafers, sheets, you name it.


In the case of the demo, a thin sheet of sapphire has been glued over a regular iPhone 5's chemically hardened Gorilla Glass 2 screen with some transparent adhesive -- it's completely clear. To my eye, the sapphire overlay is indistinguishable from a sheet of glass. That is, until I've spent a few minutes deliberately trying to scratch and smash it with a hunk of craggy concrete.


One time a tiny nugget of concrete did break from the chunk and stick to the sapphire display. I thought perhaps it was embedded, but it too wiped away without any noticeable nicks or indentations. The result: a layer of concrete powder that coats the screen, but wipes away clean. Next to it in the demo, a sheet of Gorilla Glass collected scratches.



Depending on the exact formula of chemically reinforced glass, sapphire has approximately 2.5 or 3 times its strength.


Apart from being one of the strongest compound materials there is -- second only to diamond -- synthetic sapphire is highly rigid and won't buckle or melt in high heat situations. It is also slow to corrode, conducts heat at low temperatures, and is known for its excellent light transmission for wavelengths well beyond the scope of human vision. The screen was just as responsive as glass when I handled the device.


Grown sapphire is already used in aerospace, military, and medical devices -- especially lasers, protective windows, and highly-specialized lenses. It's also used in
LED TVs and bulbs, and the high-end watch industry, and already existed in the
iPhone 5 demo unit as a cover material for the main camera lens.


And yes, sapphire has already turned up in a smartphone, making its debut in the Vertu Ti Android phone, which sells for upwards of $10,000. Luckily, most future smartphones with sapphire displays won't cost such a jaw-dropping bundle, although the material is more costly, about 3 or 4 times the cost of regular glass.



Yet, cost is exactly why we're even able to conceive of sapphire as your phone's topper material. Manufacturing prices continue to drop -- it's all about economies of scale.


GT Advanced Technologies, the company that organized the sapphire display demo, manufactures the giant blocks, or boules, of crystalline sapphire that customers like China's Zhejiang Shangcheng Science and Technology eventually turn into phone screens and more. It takes 16 days and a 2,200-degree Celsius furnace (almost 4,000 Fahrenheit) to create a 250-pound block of synthetic sapphire.


Today there's not enough capacity to create sapphire displays en masse, but we will see an uptick in adoption at the higher end of the spectrum. How much would you pay for a phone with a virtually indestructible screen?


Check out more cool finds, videos, and photos from Mobile World Congress 2013.



Bend it like Corning Willow Glass




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Why African Rhinos Are Facing a Crisis


The body count for African rhinos killed for their horns is approaching crisis proportions, according to the latest figures released by the International Union for Conservation of Nature (IUCN).

To National Geographic reporter Peter Gwin, the dire numbers—a rhinoceros slain every 11 minutes since the beginning of 2013—don't come as a surprise. "The killing will continue as long as criminal gangs know they can expect high profits for selling horns to Asian buyers," said Gwin, who wrote about the violent and illegal trade in rhino horn in the March 2012 issue of the magazine.

The recent surge in poaching has been fueled by a thriving market in Vietnam and China for rhino horn, used as a traditional medicine believed to cure everything from hangovers to cancer. Since 2011, at least 1,700 rhinos, or 7 percent of the total population, have been killed and their horns hacked off, according to the IUCN. More than two-thirds of the casualties occurred in South Africa, home to 73 percent of the world's wild rhinos. In Africa there are currently 5,055 black rhinos, listed as critically endangered by the IUCN, and 20,405 white rhinos. (From our blog: "South African Rhino Poaching Hits New High.")

Trying to snuff out poaching by itself won't work, said Gwin. The South African government is fighting a losing battle on the ground to gangs using helicopters, dart guns, high-powered weapons—and lots of money. (National Geographic pictures: The bloody poaching battle over rhino horn [contains graphic images].)

"Every year they get tougher on poaching, but rhino killings continue to rise astronomically," said Gwin. "Somehow they have to address the demand side in a meaningful way. This means either shutting down the Asian markets for rhino horn, or controversially, finding a way to sustainably harvest rhino horns, control their legal sale, and meet what appears to be a huge demand. Either will be a formidable endeavor."

Hope and Hurdles

The signing in December of a memorandum of understanding between South Africa and Vietnam to deal with rhino poaching and other conservation issues raises hope for some concrete action. Observers say the next step is for the two governments to follow through with tangible crime-stopping efforts such as intelligence sharing and other collaboration. The highest hurdle to stopping criminal trade, though, is cultural, Gwin believes. "In Vietnam and China, a lot of people simply believe that as a traditional cure, rhino horn works." (Related: "Blood Ivory.")

The recent climb in rhino deaths threatens what had been a conservation success story. Since 1995, due to better law enforcement, monitoring, and other actions, the overall rhino numbers have steadily risen. The poaching epidemic, the IUCN warns, could dramatically slow and possibly reverse population gains.

The population growth is also being stymied by South Africa's private game farmers, who breed rhinos for sport hunting and tourism and for many years have helped rebuild rhino numbers. Many of them are getting out of the business due to the high costs of security and other risks associated with the poaching invasions.

Those who still have rhinos on their farms will often pay a veterinarian to cut the horns off—under government supervision—to dissuade poachers, but the process costs more than $2,000 and has to be repeated when the horns grow back every two years. Even then the farmers are stuck with horns that are illegal to sell—and which criminals seek to obtain.

Room for Debate

Rhino killings and the trade in their horns will be a major topic at a high-profile conference, the 16th meeting of the Conference of the Parties to the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), which opens in Bangkok March 3. What won't surprise Gwin is if the issue of sustainably harvesting rhino horns from live animals comes up for discussion.

"It's an idea that seems to be gaining traction among some South African politicians and law enforcement circles," he said, noting that the international conservation community strongly opposes any talk of legalizing the trade of rhino horn, sustainably harvested or not. The bottom line for all parties in the discussion is clear, said Gwin: "The slaughter has to stop if rhinos are to survive."


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Benedict Pledges 'Obedience' to New Pope












In his farewell remarks to colleagues in the Roman Catholic Church, Pope Benedict XVI, the first pontiff to resign in nearly 600 years, promised "unconditional reverence and obedience" to his eventual successor.


Benedict, in a morning meeting at the Vatican, urged the cardinals to act "like an orchestra" to find "harmony" moving forward.


Benedict, 85, is spending a quiet final day as pope, bidding farewell to his colleagues and moving on to a secluded life of prayer, far from the grueling demands of the papacy and the scandals that have recently plagued the church.


His first order of business was a morning meeting with the cardinals in the Clementine Hall, a room in the Apostolic Palace. Despite the historical nature of Benedict's resignation, not all cardinals attended the event.


With their first working meeting not until Monday, only around 100 cardinals were set to attend, the Vatican press office said Wednesday. Those who are there for Benedict's departure will be greeted by seniority.


Angelo Sodano, the dean of the College of Cardinals, thanked Benedict for his service to the church during the eight years he has spent as pontiff.


Pope Benedict XVI Delivers Farewell Address










In the evening, at 5:00 p.m. local time, Benedict will leave the Vatican palace for the last time to head to Castel Gandolfo, the papal summer residence outside Rome. Before his departure, the German-born theologian will say some goodbyes in the Courtyard of San Damaso, inside the Vatican, first to his Secretary of State Cardinal Tarcisio Bertone and then to the Swiss Guards who have protected him as pontiff.


9 Men Who Could Replace Pope Benedict XVI


From there it is a short drive to a heliport for the 15-minute flight via helicopter to Castel Gandolfo, just south of the city. Benedict will not be alone on his journey, accompanied by members of the Pontifical Household such as two private secretaries, the head of protocol, his personal physician and his butler.


Once Benedict lands in the gardens at Castel Gandolfo, he will be greeted a group of dignitaries, such as the governor of the Vatican City state Giovanni Bertello, two bishops, the director of the pontifical villas, and the mayor and parish priest. Off the helicopter and into a car, Benedict will head to the palace that he will call home for the coming months. From a window of the palace, Benedict will make one final wave to the crowd at the papal retreat.


It is there, at 8:00 p.m., that Benedict's resignation will take effect once and for all. Once the gates to the residence close, the Swiss Guards will leave Benedict's side for the last time, their time protecting the pontiff completed.


Pope Benedict's Last Sunday Prayer Service


For some U.S. Catholics in Rome for the historic occasion, Benedict's departure is bittersweet. Christopher Kerzich, a Chicago resident studying at the Pontifical North American College of Rome, said Wednesday he is sad to see Benedict leave, but excited to see what comes next.


"Many Catholics have come to love this pontiff, this very humble man," Kerzich said. "He is a man who's really fought this and prayed this through and has peace in his heart. I take comfort in that and I think a lot of Catholics should take comfort in that."






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We need a piece of Mars to continue search for life


































THERE'S no need to cry over spilt chemicals. Thanks to an accident inside one of its instruments, NASA's Curiosity rover has detected the presence of a substance called perchlorate in Martian soil (see "Curiosity's spills add thrills to the Mars life hunt").












Not exactly earth-shattering, you might think. But it adds a new twist to the most controversial chapter in Martian history: did the Viking landers detect life?













This is a question that has divided the Viking missions' researchers for almost three decades. One group has resolutely stuck to its guns that the landers detected signs of life. Equally adamant is a second group who say they absolutely did not – a view that has always been the official version of events.












The unexpected discovery of perchlorate supplies a legitimate reason to reopen the debate. Perchlorate is an oxidising agent that destroys organic molecules. Its presence could finally explain the disputed results.












The episode highlights another important issue. Curiosity is a sophisticated machine, but there is only so much soil chemistry we can do from millions of kilometres away. A sample return mission must be a priority.












This article appeared in print under the headline "We need a piece of Mars"


















































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Rehabilitative care innovation can alleviate manpower crunch: govt






SINGAPORE: The government said the use of technology not only accelerates the rehabilitation process of patients, but also helps ease manpower shortages in healthcare.

The latest in "rehab innovations" for those with disabilities are on display at the inaugural Rehab Tech Asia exhibition in Singapore.

The showcase includes a robot arm which allows users who are paralysed in their upper bodies to do daily functions, such as drinking a glass of water.

Laurie Piquet, director of rehabilitation development at KINOVA, said: "When we demonstrate this to users, often the first comments that we have are, 'that's the first time I'm drinking a glass of water by myself'."

The innovation from Canada is compatible with any powered wheelchair and can be controlled by a joystick or through neck movements.

A special wheelchair also improves mobility by making it easier for users to climb stairs and cross pavements.

Other than technology for patients to use, there are also devices for caregivers.

"The Body Up", distributed by Lifeline, is a transfer assist device for bed-ridden patients. The contraption can be used to lift a patient who weighs less than 120kg.

With a growing demand for special needs care, those in the field of rehabilitation said such technology can alleviate problems of manpower shortage.

Dr Kong Keng He, senior consultant at department of rehabilitation medicine at Tan Tock Seng Hospital, said: "It is still very hospital-centric. The patient goes to the hospital to get treatment. I think it will be better off to make it more patient-centric. Deploy this treatment, whether it is rehabilitation, back to the community. And it's always possible for community centres, day rehabilitation centres to acquire these equipment and to have patients to receive their therapy there."

Minister of State for Health Dr Amy Khor agreed, saying the high cost of some technology may be offset by productivity gains in the long run.

She said: "Where it is viable and applicable, I think we should adopt them because it's helpful in terms of improving, accelerating the rehabilitation experience as well as in terms of better use of manpower, improving productivity, and this is something we need to look at. Where it is still costly, I think technology will develop and we will have to continue to monitor this."

With the recent enhancements made to the Senior's Mobility and Enabling Fund, Dr Khor said the subsides should encourage the elderly to go for rehabilitation services within the community.

On how the fund will be disbursed to help home care patients, especially those who are not in touch with intermediate- and long-term care providers, Dr Khor said the Agency for Integrated Care will work with the operators to help spread awareness of the fund. The agency will also work with the grassroots organisations and Community Development Councils to publicise the fund among needy residents.

- CNA/xq



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VirnetX v. Apple Judge upholds $368M patent suit verdict






FaceTime FaceOff: VirnetX v. Apple's patent battle grinds almost to a halt after both companies are denied injunctions or new judgments.




A U.S. District Court has upheld an earlier decision by a federal jury last year to award intellectual property and patent holding firm VirnetX more than $368.2 million, after Apple was found to have infringed patents relating to the proprietary video chat service, FaceTime.


First noted by Seeking Alpha, Apple must award VirnetX more than $330,000 per day until the case is settled, forcing the companies to hammer out agreements between themselves.


VirnetX, known for going after major tech companies on patent infringement claims, believes Apple infringed four networking patents designed to establish a secure connection between two devices.

The "royalty" mediation settlement will require the two firms to thrash out exactly how much Apple should pay for any further use of VirnetX's patents. Failure to reach an agreement will lead to a new ruling that could incur further damages.


Apple's
iPhone 5,
iPad Mini, fourth-generation iPad, fifth-generation
iPod Touch, and the latest Mac computers all infringe the patents, according to the original jury.

While Apple's offering of FaceTime is likely not at risk for the end customer, the terms of the settlement will need to be decided upon by both firms sooner rather than later to prevent any further damages being added to the case.

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A History of Balloon Crashes


A hot-air balloon exploded in Egypt yesterday as it carried 19 people over ancient ruins near Luxor. The cause is believed to be a torn gas hose. In Egypt as in many other countries, balloon rides are a popular way to sightsee. (Read about unmanned flight in National Geographic magazine.)

The sport of hot-air ballooning dates to 1783, when a French balloon took to the skies with a sheep, a rooster, and a duck. Apparently, they landed safely. But throughout the history of the sport, there have been tragedies like the one in Egypt. (See pictures of personal-flight technology.)

1785: Pioneering balloonist Jean-Francois Pilatre de Rozier and pilot Pierre Romain died when their balloon caught fire, possibly from a stray spark, and crashed during an attempt to cross the English Channel. They were the first to die in a balloon crash.

1923: Five balloonists participating in the Gordon Bennett Cup, a multi-day race that dates to 1906, were killed when lightning struck their balloons.

1924: Meteorologist C. LeRoy Meisinger and U.S. Army balloonist James T. Neely died after a lightning strike. They had set off from Scott Field in Illinois during a storm to study air pressure. Popular Mechanics dubbed them "martyrs of science."

1995: Tragedy strikes the Gordon Bennett Cup again. Belarusian forces shot down one of three balloons that drifted into their airspace from Poland. The two Americans on board died. The other balloonists were detained and fined for entering Belarus without a visa. (Read about modern explorers who take to the skies.)

1989: Two hot air balloons collided during a sightseeing trip near Alice Springs, Australia. One balloon crashed to the ground killing all 13 people on board. The pilot of the other balloon was sentenced to a two-year prison term for "committing a dangerous act." Until today, this was considered the most deadly balloon accident.

2012: A balloon hit a power line and caught fire in New Zealand, killing all 11 on board. Investigators later determined that the pilot was not licensed to fly and had not taken  proper safety measures during the crash, like triggering the balloon's parachute and deflation system.

2012: A sightseeing balloon carrying 32 people crashed and caught fire during a thunderstorm in the Ljubljana Marshes in Slovenia. Six died; many other passengers were injured.


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Pope Thanks Crowd in Final Public Appearance












On his final full day as the leader of the Roman Catholic Church, Pope Benedict XVI thanked a huge crowd for respecting his historic decision to step down and told them that God will continue to guide the church.


"The decision I have made, after much prayer, is the fruit of a serene trust in God's will and a deep love of Christ's Church," Benedict said to cheers in his last public words as pope.


Benedict, 85, is the first pope to resign in 600 years. He told the crowd today that he was "deeply grateful for the understanding, support and prayers of so many of you, not only here in Rome, but also throughout the world."


Pope Benedict's Last Sunday Prayer Service


Under sunny skies on this late February day, hundreds of thousands of people, some waving flags, some banners, flocked to Vatican City to see Benedict make a final lap around St. Peter's Square. Throughout his eight-year papacy, Benedict has conducted a weekly audience from St. Peter's. Before delivering his last papal address today, Benedict waved to the festive group of supporters as he toured the square in his glass-encased popemobile.


The city of Rome planned for more than 200,000 people to head to the Vatican for today's event. Streets around St. Peter's were blocked off to cars as pedestrians from around the world headed to the square.








The Conclave: Secret World of Picking the Pope Watch Video











Papal Appearance: Faithful Flock to Saint Peter's Square Watch Video





9 Men Who Could Replace Pope Benedict XVI


The conclave to elect Benedict's replacement will start next month at a date yet to be determined. Benedict issued a decree known as a "motu poprio" that will allow cardinals to convene the conclave sooner than the March 15 date that would have been mandated under the old rules.


Benedict today asked the faithful to pray for him and for the new pope.


"My heart is filled with thanksgiving to God who ever watches over his church," Benedict said.


The German-born Benedict, who had appeared frail at times in recent months, seemed more energized in his remarks today. He has said he will devote more time to prayer and meditation after he leaves the papacy.


Benedict will meet Thursday with his cardinals in the morning and then flies by helicopter at 5 p.m. to Castel Gandolfo, the papal residence south of Rome. Benedict will greet parishioners there from the palazzo's balcony, his final public act as pope.


Then, at 8 p.m., the exact time at which his retirement becomes official, the Swiss Guards standing outside the doors of the palazzo at Castel Gandolfo will go off duty, their service protecting the head of the Catholic Church finished.


In retirement, Benedict will continue to wear white and will be called "Pope Emeritus," or the "Supreme Roman Pontiff Emeritus" or "Your Holiness," the Vatican announced Tuesday. Benedict will ditch his trademark red shoes, opting for a pair of brown shoes given to him on a trip to Mexico. But he will still reside on Vatican grounds in a former nunnery.


Benedict's final days as pope have been marked by controversy. For nearly a week now Italian newspapers speculated that Benedict really resigned because of a dossier he was given detailing a sex and blackmail scandal in the Catholic Church. The Italian media news reports do not state any attribution.


It turns out a dossier does exist. The Vatican spokesman Monday underscored that the contents of the dossier are known only to the pope and his investigators, three elderly prelates whom the Italian papers have nicknamed "the 007 cardinals."


But the dossier itself will remain "For the Pope's Eyes Only."






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