You Can Use Facebook for Free Cellphone Calls Now

Wait, what?

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Yes, theoretically you can kis those talk-time minutes from your cellphone data plan goodbye — as long as you’re content to have all your voice conversation with other Facebook users over data or Wi-Fi by way of your Messenger app. It’s called Voice Over Internet Protocol talking, and it’s the same thing that was supposed to help Skype take over the world last decade, and it might end up being a lot more useful to the savvy consumer’s pocketbook than the Graph Search, which Mark Zuckerberg called the “third pillar” of Facebook yesterday.

RELATED: Everything There Is to Know About That Facebook Phone

To make a call, all Facebook users have to do is tap the little “i” at the top right corner of the revamped app, which leads to the screen pictured above at right. As long as the other caller has the Messenger app, U.S. users can now tap Free Call, and, well, it’s just like making a phone call, really — except that instead of ringing, a push notification pops up: “You have a call from Carly.” (Seriously! We just tried it! It was free!)

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Of course, this isn’t a Facebook-branded piece of hardware, or even the full-scale cellphone OS many have been drooling over as the social network figures out its mobile future. But this software could replace the traditional way we make calls. As we’ve explained before, Facebook has a lot of things going for it in taking VoIP calls to the masses in the way the Skype never really could: Messenger’s got all the right contacts, it costs almost nothing, and it even works in areas with terrible reception. Not to mention it works over data plans for everyone and not just people with compatible phones — Apple’s FaceTime feature only works on the iPhone 4S or 5, even if it’s more available now. Still, Facebook doesn’t have video chat for Messenger. But, hey, one world dominating step at a time, right?

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Manti Te'o girlfriend's death apparently a hoax

SOUTH BEND, Ind. (AP) — Not long before Notre Dame played Michigan State last fall, word spread that Fighting Irish linebacker Manti Te'o had lost his grandmother and girlfriend within hours of each other.

Te'o never missed a practice and made a season-high 12 tackles, two pass breakups and a fumble recovery in a 20-3 victory against the Spartans. His inspired play became a stirring story line for the Fighting Irish as they made a run to the national championship game behind their humble, charismatic star.

Te'o's grandmother did indeed die. His girlfriend, Lennay Kekua, never existed.

In a shocking announcement Wednesday night, Notre Dame said Te'o was duped into an online relationship with a woman whose "death" from leukemia was faked by perpetrators of an elaborate hoax. The goal of the scam wasn't clear, though Notre Dame said it used an investigative firm to dig into the details after Te'o disclosed them three weeks ago.

The hoax was disclosed hours after Deadspin.com posted a lengthy story, saying it could find no record that Kekua ever existed. The story suggests a friend of Te'o may have carried out the hoax and that the football player may have been in on it — a stunning claim against a widely admired All-American who led the most famed program in college football back to the championship game for the first time since 1988.

"This is incredibly embarrassing to talk about, but over an extended period of time, I developed an emotional relationship with a woman I met online," Te'o said in a statement. "We maintained what I thought to be an authentic relationship by communicating frequently online and on the phone, and I grew to care deeply about her. "

However, he stopped short of saying he had ever met her in person or correcting reports that said he had, though he did on numerous occasions talk about how special the relationship was to him.

"To realize that I was the victim of what was apparently someone's sick joke and constant lies was, and is, painful and humiliating," he said. "In retrospect, I obviously should have been much more cautious. If anything good comes of this, I hope it is that others will be far more guarded when they engage with people online than I was."

Word of the hoax spread quickly and raised questions about whether the school somehow played a role in pushing the tale.

Notre Dame athletic director Jack Swarbrick said at a news conference that Te'o told coaches on Dec. 26 that he had received a call from Kekua's phone number while at an awards ceremony during the first week of December.

"When he answered it, it was a person whose voice sounded like the same person he had talked to, who told him that she was, in fact, not dead. Manti was very unnerved by that, as you might imagine," Swarbrick said.

Swarbrick said the school hired investigators and their report indicated those behind the hoax were in contact with each other, discussing what they were doing.

The investigators "were able to discover online chatter among the perpetrators that was certainly the ultimate proof of this, the joy they were taking," Swarbrick said. "The casualness among themselves they were talking about what they accomplished."

Swarbrick said for Te'o "the pain was real."

"The grief was real. The affection was real," he said. "That's the nature of this sad, cruel game."

Swarbrick added: "Nothing about what I have learned has shaken my faith in Manti Te'o one iota."

Swarbrick said Notre Dame did not take the matter to the police, saying that the school left it up to Te'o and his family to do so. He added that Notre Dame did not plan to release the findings of its investigation.

"We had no idea of motive, and that was really significant to us. ... Was somebody trying to create an NCAA violation at the core of this? Was there somebody trying to impact the outcome of football games by manipulating the emotions of a key player? Was there an extortion request coming? When you match the lack of sort of detail we lacked until we got some help investigating it with the risk involved, it was clear to me until we knew more we had to just to continue to work to try to gather the facts," Swarbrick said.

The Deadspin report changed all that.

Friends and relatives of Ronaiah Tuiasosopo told Deadspin they believe he created Kekua. The website said Te'o and Tuiasosopo knew each other. Attempts by The Associated Press to reach Tuiasosopo by telephone were unsuccessful.

As for Kekua, Deadspin said she does not have a death certificate. Stanford, where she reportedly went to school, has no record of anybody by that name, the website said. Deadspin said a record search produced no obituary or funeral announcement. There is no record of her birth in the news.

There are a few Twitter and Instagram accounts registered to Lennay Kekua, but the website reported that photographs identified as Kekua online and in TV news reports are pictures from the social-media accounts of a 22-year-old California woman who is not named Lennay Kekua.

Te'o talked freely about their relationship after her supposed death and how much she meant to him.

In a story that appeared in The South Bend Tribune on Oct. 12, Manti's father, Brian, recounted an anecdote about how his son and Kekua met after Notre Dame had played at Stanford in 2009. Brian Te'o also told the newspaper that Kekua had visited Hawaii and met with his son. Brian Te'o told the AP in an interview in October that he and his wife had never met Manti's girlfriend but they had hoped to at the Wake Forest game in November. The father said he believed the relationship was just beginning to get serious when she died.

The Tribune released a statement saying: "At the Tribune, we are as stunned by these revelations as everyone else. Indeed, this season we reported the story of this fake girlfriend and her death as details were given to us by Te'o, members of his family and his coaches at Notre Dame."

The week before Notre Dame played Michigan State on Sept. 15, coach Brian Kelly told reporters when asked that Te'o's grandmother and a friend had died. He said Kekua had told Te'o not to miss a game if she died. The linebacker turned in one of his best performances of the season and his playing through heartache became a prominent theme during the Irish's undefeated regular season. He finished second in Heisman voting.

"It further pains me that the grief I felt and the sympathies expressed to me at the time of my grandmother's death in September were in any way deepened by what I believed to be another significant loss in my life," Te'o said in his statement.

"I am enormously grateful for the support of my family, friends and Notre Dame fans throughout this year. To think that I shared with them my happiness about my relationship and details that I thought to be true about her just makes me sick. I hope that people can understand how trying and confusing this whole experience has been."

Te'o and the Irish lost the title game to Alabama, 42-14 on Jan. 7. He has graduated and was set to begin preparing for the NFL combine and draft at the IMG Academy in Bradenton, Fla., this week.

"Fortunately, I have many wonderful things in my life," he said in his statement, "and I'm looking forward to putting this painful experience behind me as I focus on preparing for the NFL draft."

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Some With Autism Diagnosis Can Recover, Study Finds

Doctors have long believed that disabling autistic disorders last a lifetime, but a new study has found that some children who exhibit signature symptoms of the disorder recover completely.

The study, posted online on Wednesday by the Journal of Child Psychology and Psychiatry, is the largest to date of such extraordinary cases and is likely to alter the way that scientists and parents think and talk about autism, experts said.

Researchers on Wednesday cautioned against false hope. The findings suggest that the so-called autism spectrum contains a small but significant group who make big improvements in behavioral therapy for unknown, perhaps biological reasons, but that most children show much smaller gains. Doctors have no way to predict which children will do well.

Researchers have long known that between 1 and 20 percent of children given an autism diagnosis no longer qualify for one a few years or more later. They have suspected that in most cases the diagnosis was mistaken; the rate of autism diagnosis has ballooned over the past two decades, and some research suggests that it has been loosely applied.

The new study should put some of that skepticism to rest.

“This is the first solid science to address this question of possible recovery, and I think it has big implications,” said Sally Ozonoff of the MIND Institute at the University of California, Davis, who was not involved in the research. “I know many of us as would rather have had our tooth pulled than use the word ‘recover,’ it was so unscientific. Now we can use it, though I think we need to stress that it’s rare.”

She and other experts said the findings strongly supported the value of early diagnosis and treatment.

In the study, a team led by Deborah Fein of the University of Connecticut at Storrs recruited 34 people who had been diagnosed before the age of 5 and no longer had any symptoms. They ranged in age from 8 to 21 years old and early in their development were in the higher-than-average range of the autism spectrum. The team conducted extensive testing of its own, including interviews with parents in some cases, to gauge current social and communication skills.

The debate over whether recovery is possible has simmered for decades and peaked in 1987, when the pioneering autism researcher O. Ivar Lovaas reported that 47 percent of children with the diagnosis showed full recovery after undergoing a therapy he had devised. This therapy, a behavioral approach in which increments of learned skills garner small rewards, is the basis for the most effective approach used today; still, many were skeptical and questioned his definition of recovery.

Dr. Fein and her team used standardized, widely used measures and found no differences between the group of 34 formerly diagnosed people and a group of 34 matched control subjects who had never had a diagnosis.

“They no longer qualified for the diagnosis,” said Dr. Fein, whose co-authors include researchers from Queens University in Kingston, Ontario; Children’s Hospital of Philadelphia; the Institute of Living in Hartford; and the Child Mind Institute in New York. “I want to stress to parents that it’s a minority of kids who are able to do this, and no one should think they somehow missed the boat if they don’t get this outcome.”

On measures of social and communication skills, the recovered group scored significantly better than 44 peers who had a diagnosis of high-functioning autism or Asperger’s syndrome.

Dr. Fein emphasized the importance of behavioral therapy. “These people did not just grow out of their autism,” she said. “I have been treating children for 40 years and never seen improvements like this unless therapists and parents put in years of work.”

The team plans further research to learn more about those who are able to recover. No one knows which ingredients or therapies are most effective, if any, or if there are patterns of behavior or biological markers that predict such success.

“Some children who do well become quite independent as adults but have significant anxiety and depression and are sometimes suicidal,” said Dr. Fred Volkmar, the director of the Child Study Center at the Yale University School of Medicine. There are no studies of this group, he said.

That, because of the new study, is about to change.

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Regulators Around the Globe Ground Boeing 787s

Kyodo News, via Reuters

The 787 that made an emergency landing in Japan on Wednesday. All 137 passengers and crew members were evacuated safely.

Regulators around the globe ordered the grounding of Boeing 787s on Thursday until they could determine what caused a new type of battery to catch fire on two planes in recent days.

The directives in Europe, India and Japan followed an order Wednesday by the U.S. Federal Aviation Administration grounding the planes operated by U.S. carriers.

The decisions are a result of incidents involving a plane that was parked in Boston and one in Japan that had to make an emergency landing Wednesday morning after an alarm warning of smoke in the cockpit.

In Japan on Thursday, the transportation ministry issued a formal order to ground all 787s indefinitely, until concerns over the aircraft’s battery systems are resolved. All Nippon Airways and Japan Airlines had already voluntarily grounded their 787s on Wednesday.

European safety regulators also said they would ground Dreamliners, affecting LOT of Poland, the only carrier that operates the jets in that region. In India, the aviation regulator grounded all six of the 787s operated by the state-owned carrier Air India.

LAN Airlines of Chile said it was following suit, acting in coordination with the Chilean Aeronautical Authority.

The F.A.A.’s emergency directive, issued Wednesday night, initially applies to United Airlines, the only American carrier using the new plane so far, with six 787s.

Boeing, based in Chicago, has a lot riding on the 787, and its stock dropped nearly 3.4 percent Wednesday to $74.34. The company has outlined ambitious plans to double its production rate to 10 planes a month by the end of 2013. It is also starting to build a stretch version and considering an even larger one after that.

“We are confident the 787 is safe and we stand behind its overall integrity,” Jim McNerney, Boeing’s chief executive, said in a statement.

The grounding — an unusual action for a new plane — focuses on one of the more risky design choices made by Boeing, namely to make extensive use of lithium-ion batteries aboard its airplanes for the first time.

Until now, much of the attention on the 787 was focused on its lighter composite materials and more efficient engines, meant to usher in a new era of more fuel-efficient travel, particularly over long distances. The batteries are part of an electrical system that replaces many mechanical and hydraulic ones that are common in previous jets.

The 787’s problems could jeopardize one of its major features, its ability to fly long distances at a lower cost. The plane is certified to fly 180 minutes from an airport. The U.S. government is unlikely to extend that to 330 minutes, as Boeing has promised, until all problems with the plane have been resolved.

For Boeing, “it’s crucial to get it right,” said Richard L. Aboulafia, an aviation analyst at Teal Group in Fairfax, Virginia. “They’ve got a brief and closing window in which they can convince the public and their flying customers that this is not a problem child.”

The 787 uses two identical lithium-ion batteries, each about one and a half to two times the size of a typical car battery. One battery, in the rear electrical equipment bay near the wings, is used to start the auxiliary power unit, a small engine in the tail that is used most often to provide power for the plane while it is on the ground. The other battery, called the main battery, starts the pilot’s computer displays and serves as a backup for flight systems.

The maker of the 787’s batteries, GS Yuasa of Japan, has declined to comment on the problems.

Boeing has defended the novel use of the batteries and said it had put in place a series of systems meant to prevent overcharging and overheating.

In a conference call last week with reporters, Boeing’s chief engineer for the 787, Mike Sinnett, said that the company had long been aware of possible problems with lithium-ion batteries but that it had built in numerous redundant features to keep any problems with the batteries from threatening the plane in flight. He said that the batteries had not had any problems in 1.3 million hours of flight and that Boeing was trying to understand what had caused the problems.

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Bombings in Disputed Iraqi City Kill 13

BAGHDAD (AP) — An explosives-packed vehicle driven by a suicide bomber blew up outside offices for the party of a key Kurdish leader early Wednesday in the disputed Iraqi city of Kirkuk, the largest in a wave of morning strikes that left at least 24 dead and scores wounded across the country.

The attacks made for Iraq's bloodiest day in two weeks. They come amid rising tensions among Iraq's ethnic and sectarian groups that threaten to plunge the country back into chaos nearly a decade after the U.S.-led invasion.

While there was no immediate claim of responsibility, car bombs and coordinated attacks are favorite tactics for Sunni insurgents such as al-Qaida's Iraq branch. They seek to exacerbate divisions within Iraq in an effort to undermine the Shiite-led government.

The blast outside the Kirkuk offices of the Kurdistan Democratic Party caused widespread damage, mangling cars and tearing apart storefronts. The KDP is led by Massoud Barzani, the president of Iraq's largely autonomous Kurdish region, who has frequently sparred with Iraq's central government in Baghdad.

The deputy police chief in the city of Kirkuk, Maj. Gen. Torhan Abdul-Rahman Youssef, said 11 people were killed in that attack. Another car bomb that exploded nearby killed another two people. Just over 100 were wounded in the two attacks, he said.

Kirkuk, 290 kilometers (180 miles) north of Baghdad, is home to a mix of Arabs, Kurds and Turkomen, who all have competing claims to the oil-rich area. The Kurds want to incorporate it into their self-ruled region in Iraq's north, but Arabs and Turkomen are opposed.

The city is at the heart of a snaking swath of territory disputed between the Kurds, who have their own armed fighting force, and Iraq's central government.

A shootout in Tuz Khormato, another contested town along the disputed area, prompted both sides to rush troops and heavy weapons to the area in November.

On Wednesday, yet another car bomb struck the local headquarters for Kurdish security forces in Tuz Khormato, killing five and wounding 36, according to Raed Ibrahim, the head of the provincial health directorate. The town is It is about 210 kilometers (130 miles) north of Baghdad.

The attacks came as hundreds of mourners gathered in the western city of Fallujah to bury a prominent Sunni lawmaker assassinated by a suicide bomber on Tuesday.

The politician, Ifan Saadoun al-Issawi, was part of the Sunni-backed Iraqiya bloc, which holds some posts in Iraq's loose power-sharing government but is at the same time the main force in opposition to Prime Minister Nouri al-Maliki's administration. He was also a founder of the local branch of the Sahwa, a group of Sunni Arabs who joined forces with the U.S. military to fight al-Qaida at the height of Iraq's insurgency.

Fallujah and the nearby city of Ramadi have been the scene of more than three weeks of demonstrations against the government.

A planted bomb went off as mourners gathered to mark al-Issawi's death, wounding three of them, authorities said.

Violent attacks hit other parts of the country as well.

In Baghdad, gunmen using silenced weapons killed three policemen as they were sitting in their police car, according to police and hospital officials. A roadside bomb hit a police patrol on a highway in eastern Baghdad, killing two policemen, said police and hospital officials.

One policeman was killed and four others wounded when a roadside bomb struck their car in Hawija, 240 kilometers (160 miles) north of Baghdad, according to authorities.

The officials providing details of the attacks outside the disputed areas spoke on condition of anonymity because they weren't authorized to release the information to reporters.

Violence has fallen since the peak of insurgency several years ago, but lethal attacks still occur frequently.

Wednesday's attacks were the deadliest in the country since New Year's Eve, when a string of attacks in Kirkuk and other areas left at least 26 dead.

___

Associated Press writers Sameer N. Yacoub and Qassim Abdul-Zahra contributed reporting.

___

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Apple scoops PBS on “Downton Abbey” episodes, but PBS is cool with it

NEW YORK (TheWrap.com) – Apple is making the entire third season of “Downton Abbey” available on iTunes before every episode airs on PBS – and that’s just fine with PBS.

Fans who buy a season pass on iTunes beginning January 29 will get to see three episodes before they air on PBS. The Season 3 finale airs February 17.

But PBS CEO Paula Kerger isn’t worried that viewers will watch the show online, then tune out PBS. In fact, she says, Apple isn’t the only place Americans can see “Downton” before they can see it on her network.

“You can also buy the DVD sets. They’re being shipped at the end of January, and the DVD sets and Apple are going up at the same time,” Kerger told TheWrap. “I think that for people who are really passionate and want to have it, it’s a great thing.”

Kerger says she hopes more viewers will discover “Downton” on whatever format they like best – and then watch it on PBS next season.

“At the end of the day, my interest is just in seeing it get to the widest possible audience, and there are people that would pick it up on Apple that may not pick it up anywhere else,” she said.

The first episode of the third season premiered to a record 7.9 million viewers earlier this month. Many of those viewers, no doubt, caught up on the previous seasons online or through DVD viewing.

“Downton” airs in the U.K. in the fall but on PBS in January, which means PBS viewers must shield themselves from spoilers. That has led to some grumbling from American fans.

But Kerger said airing the show in January allows the show to get more attention domestically than it might otherwise receive in the crowded fall season.

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Broncos OC McCoy hired as Chargers coach

SAN DIEGO (AP) — Mike McCoy's interview with San Diego went so well that both sides felt he was a perfect fit to become the Chargers' new coach.

McCoy had one thing to do, though, before accepting the Chargers' offer, so it was a good thing Chargers President Dean Spanos' private plane was at his disposal.

"There was no doubt in my mind when I got back on that plane to go back home," said McCoy, the former Denver Broncos offensive coordinator who was introduced Tuesday as Chargers' new coach. "They wanted to keep me here last night. But I said, 'I've got to talk to my wife about this before. If I made the decision without talking to my wife, I might get in a little trouble.'"

So McCoy flew back to Denver to talk it over with wife Kellie. McCoy, his wife and their two children were back on the same plane Tuesday morning, flying back to San Diego to take the job.

"Without a doubt we knew this was the place we wanted to be," said McCoy, who signed a four-year contract.

McCoy replaces Norv Turner, who was fired along with general manager A.J. Smith after the Chargers finished 7-9 and missed the playoffs for the third straight season.

The move comes three days after the top-seeded Broncos were eliminated from the playoffs in a double-overtime home loss to the Baltimore Ravens.

The 40-year-old McCoy is the same age as Tom Telesco, who was hired as general manager last week. He interviewed after the Chargers already had talked to Seattle defensive coordinator Gus Bradley, fired head coaches Lovie Smith and Ken Whisenhunt, and Bengals offensive coordinator Jay Gruden.

"Once he came in and once we saw how good he was, we just felt we had to have him now," Telesco said of McCoy. "We had to get it done or we'd lose him."

"He was polished, prepared, had great questions, which I think is big, too, that he had a lot of questions for us," Telesco said. "It's a partnership between the GM and the head coach, through and through. We spend more time with each other during the season than we do with our own family so it's got to be a tight relationship. When he came in, after a little bit of time you could tell he was the right guy for us. We went after him hard."

San Diego was scheduled to interview Indianapolis offensive coordinator Bruce Arians on Wednesday. Telesco, previously the Colts' vice president of football operations, called Arians on Tuesday morning and told him the Chargers had hired McCoy.

"It was a tough phone call," Telesco said. "I have so much respect for Bruce. He's an excellent football coach. He's going to be a great head coach in this league. I was honest with him. I said, 'There's different situations, different fits, and right now, this is a fit for Mike McCoy.' He understood."

McCoy inherits a team that hasn't won a playoff game since after the 2008 season.

He thanked all the coaches and players he's worked with over the years for helping him get to this point. He also said he knew just a few minutes into his interview that San Diego was the right place.

"They all laughed at me when I walked in yesterday with this big ol' bag with all these books and binders and everything," McCoy said. "Well, that's my life's work. We've got a detailed plan that Tom and I are going to put together. ... There's going to be some change. There's a reason for change. And change is good sometimes in organizations. We've just got to make the most of the opportunity we have moving forward."

The Broncos have won consecutive AFC West titles. McCoy tutored quarterbacks Kyle Orton and Tim Tebow in 2011, and had Peyton Manning behind center in 2012.

McCoy, who interviewed with the Miami Dolphins last year after retooling Denver's offense to the read-option for Tebow at midstream in 2011, burnished his head coaching credentials this season while blending the power formations the Broncos used in leading the league in rushing last year with Tebow and some of the spread formations that Manning ran in Indianapolis.

"I think he's going to be a great head coach. Very detail-oriented, knows the game, relates with players very well," Broncos wide receiver Brandon Stokley said.

"Peyton does a lot but Mike is very good at what he does and he did a great job this year, so a lot of credit needs to go to him, also," Stokley said. "I think that's what you need to be a head coach — you need to be flexible. You need to do whatever you think is the best for your team to win and you know that's what he's done. You saw that last year. Not a lot of offensive coordinators in the NFL like running that kind of offense, but that's what he did and it was successful."

McCoy said he was "a bit stubborn" after Tebow was made the starter in 2011, but then realized he needed to change the offense.

"You take advantage of what your players do best," McCoy said.

With the Chargers, McCoy will work with Philip Rivers, who struggled this season in large part because he was under siege behind a shaky offensive line. Rivers was sacked 49 times and committed 22 turnovers, giving him 47 turnovers in two seasons.

"You go through the disappointment from the season and losing your coach to now having a new GM, new coach, and you get excited and ready to go for this 2013 season," Rivers said.

"Once I found out that we were bringing him in on Monday, I was hoping he wasn't going to leave again. I'm excited that was the case and I'm looking forward to getting started."

Denver swept the Chargers in 2012, including an epic 35-24 victory at San Diego on Oct. 15 when Manning calmly led the Broncos back from a 24-0 halftime deficit.

McCoy was a walk-on quarterback at Long Beach State under coach George Allen. After the 49ers dropped football, he transferred to Utah. He signed with the Broncos as a free agent and spent his rookie season on Green Bay's practice squad. He had stops in NFL Europe and with San Francisco, Philadelphia and in the CFL. He began his pro coaching career with Carolina before moving to the Broncos in 2009.

McCoy said he learned about detail and preparation from Allen, who coached the Los Angeles Rams and Washington Redskins.

"He was not a big yeller and screamer, he just expected you to go out there and do your job and execute the system the way it was supposed to be executed," McCoy said.

McCoy said he planned to hire an offensive coordinator to call plays. Turner called his own plays. McCoy was non-committal about defensive coordinator John Pagano, saying he planned to evaluate the entire staff.

___

AP Sports Writers John Wawrow in Buffalo and Arnie Stapleton in Denver contributed to this report.

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Well: Boosting Your Flu Shot Response

Phys Ed

Gretchen Reynolds on the science of fitness.

As this year’s influenza season continues to take its toll, those procrastinators now hurrying to get a flu shot might wish to know that exercise may amplify the flu vaccine’s effect. And for maximal potency, the exercise should be undertaken at the right time and involve the right dosage of sweat, according to several recent reports.

Flu shots are one of the best ways to lessen the risk of catching the disease. But they are not foolproof. By most estimates, the yearly flu vaccine blocks infection 50 to 70 percent of the time, meaning that some of those being inoculated gain little protection. The more antibodies someone develops, the better their protection against the flu, generally speaking. But for some reason, some people’s immune systems produce fewer antibodies to the influenza virus than others’ do.

Being physically fit has been found in many studies to improve immunity in general and vaccine response in particular. In one notable 2009 experiment, sedentary, elderly adults, a group whose immune systems typically respond weakly to the flu vaccine, began programs of either brisk walking or a balance and stretching routine. After 10 months, the walkers had significantly improved their aerobic fitness and, after receiving flu shots, displayed higher average influenza antibody counts 20 weeks after a flu vaccine than the group who had stretched.

But that experiment involved almost a year of dedicated exercise training, a prospect that is daunting to some people and, in practical terms, not helpful for those who have entered this flu season unfit.

So scientists have begun to wonder whether a single, well-calibrated bout of exercise might similarly strengthen the vaccine’s potency.

To find out, researchers at Iowa State University in Ames recently had young, healthy volunteers, most of them college students, head out for a moderately paced 90-minute jog or bike ride 15 minutes after receiving their flu shot. Other volunteers sat quietly for 90 minutes after their shot. Then the researchers checked for blood levels of influenza antibodies a month later.

Those volunteers who had exercised after being inoculated, it turned out, exhibited “nearly double the antibody response” of the sedentary group, said Marian Kohut, a professor of kinesiology at Iowa State who oversaw the study, which is being prepared for publication. They also had higher blood levels of certain immune system cells that help the body fight off infection.

To test how much exercise really is required, Dr. Kohut and Justus Hallam, a graduate student in her lab, subsequently repeated the study with lab mice. Some of the mice exercised for 90 minutes on a running wheel, while others ran for either half as much time (45 minutes) or twice as much (3 hours) after receiving a flu shot.

Four weeks later, those animals that, like the students, had exercised moderately for 90 minutes displayed the most robust antibody response. The animals that had run for three hours had fewer antibodies; presumably, exercising for too long can dampen the immune response. Interestingly, those that had run for 45 minutes also had a less robust response. “The 90-minute time point appears to be optimal,” Dr. Kohut says.

Unless, that is, you work out before you are inoculated, another set of studies intimates, and use a dumbbell. In those studies, undertaken at the University of Birmingham in England, healthy, adult volunteers lifted weights for 20 minutes several hours before they were scheduled to receive a flu shot, focusing on the arm that would be injected. Specifically, they completed multiple sets of biceps curls and side arm raises, employing a weight that was 85 percent of the maximum they could lift once. Another group did not exercise before their shot.

After four weeks, the researchers checked for influenza antibodies. They found that those who had exercised before the shot generally displayed higher antibody levels, although the effect was muted among the men, who, as a group, had responded to that year’s flu vaccine more robustly than the women had.

Over all, “we think that exercise can help vaccine response by activating parts of the immune system,” said Kate Edwards, now a lecturer at the University of Sydney, and co-author of the weight-training study.

With the biceps curls, she continued, the exercises probably induced inflammation in the arm muscles, which may have primed the immune response there.

As for 90 minutes of jogging or cycling after the shot, it probably sped blood circulation and pumped the vaccine away from the injection site and to other parts of the body, Dr. Kohut said. The exercise probably also goosed the body’s overall immune system, she said, which, in turn, helped exaggerate the vaccine’s effect.

But, she cautions, data about exercise and flu vaccines is incomplete. It is not clear, for instance, whether there is any advantage to exercising before the shot instead of afterward, or vice versa; or whether doing both might provoke the greatest response – or, alternatively, be too much and weaken response.

So for now, she says, the best course of action is to get a flu shot, since any degree of protection is better than none, and, if you can, also schedule a visit to the gym that same day. If nothing else, spending 90 minutes on a stationary bike will make any small twinges in your arm from the shot itself seem pretty insignificant.

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Rights Group Reports on Abuses of Surveillance and Censorship Technology

A Canadian human rights monitoring group has documented the use of American-made Internet surveillance and censorship technology by more than a dozen governments, some with harsh human rights policies like Syria, China and Saudi Arabia.

Jakub Dalek of the Munk School of Global Affairs.

Thor Swift for The New York Times

Morgan Marquis-Boire led the research with Mr. Dalek.

The Citizen Lab Internet research group, based at the Munk School of Global Affairs at the University of Toronto, used computer servers to scan for the distinctive signature of gear made by Blue Coat Systems of Sunnyvale, Calif.

It determined that Egypt, Kuwait, Qatar, Saudi Arabia and the United Arab Republic employed a Blue Coat system that could be used for digital censorship. The group also determined that Bahrain, China, India, Indonesia, Iraq, Kenya, Kuwait, Lebanon, Malaysia, Nigeria, Qatar, Russia, Saudi Arabia, South Korea, Singapore, Thailand, Turkey and Venezuela used equipment that could be used for surveillance and tracking.

The authors said they wanted to alert the public that there was a growing amount of surveillance and content-filtering technology distributed throughout the Internet. The technology is not restricted from export by the State Department, except to countries that are on embargo lists, like Syria, Iran and North Korea.

“Our findings support the need for national and international scrutiny of the country Blue Coat implementations we have identified, and a closer look at the global proliferation of dual-use information and communications technology,” the group noted. “We hope Blue Coat will take this as an opportunity to explain their due diligence process to ensure that their devices are not used in ways that violate human rights.”

A spokesman for Blue Coat Systems said the firm had not seen the final report and was not prepared to comment.

In 2011, several groups, including Telecomix and Citizen Labs, raised concerns that Blue Coat products were being used to find and track opponents of the Syrian government. The company initially denied that its equipment had been sold to Syria, which is subject to United States trade sanctions.

Shortly afterward, Blue Coat reversed itself and acknowledged that the systems were indeed in Syria, but it said that the devices had been shipped to a distributor in Dubai, and said that it thought that they had been destined for the Iraqi Ministry of Communications.

The Citizen Lab research project was led by Morgan Marquis-Boire and Jakub Dalek. Mr. Marquis-Boire, a Google software engineer, has during the last year been involved in a variety of research projects aimed at exposing surveillance tools used by authoritarian regimes. He said that he carefully segregated his work at Google from his human rights research.

Last year, Mr. Marquis-Boire used computer servers to identify the use of an intelligence-oriented surveillance software program, called FinSpy, which was being used by Bahrain to track opposition activists.

On a hunch last month, the researchers used the Shodan search engine, a specialized Internet tool intended to help identify computers and software services that were connected to the Internet. They were able to identify a number of the Blue Coat systems that are used for content filtering and for “deep packet inspection,” a widely used technology for detecting and controlling digital content as it travels through the Internet.

The researchers stressed that they were aware that there were both benign and harmful uses for the Blue Coat products identified as ProxySG, which functions as a Web filter, and a second system, PacketShaper, which can detect about 600 Web applications and can be used to control undesirable Web traffic.

“I’m not trying to completely demonize this technology,” Mr. Marquis-Boire said.

The researchers also noted that the equipment does not directly fall under the dual-use distinction employed by the United States government to control the sale of equipment that has both military and civilian applications, but it can be used for both political and intelligence applications by authoritarian governments.

“Syria is subject to U.S. export sanctions,” said Sarah McKune, a senior researcher at the Citizen Lab. “When it comes to other countries that aren’t subject to U.S. sanctions it’s a more difficult situation. There could still be significant human rights impact.”

The researchers also noted that a large number of American and foreign companies supplied similar gear in what Gartner, the market research firm, described as a $1.02 billion market in a report issued in May 2012.

The researchers said that some American security technology companies, like Websense, had taken strong human rights stands, but had declined to grapple with the issue of the possible misuse of the technology.

This article has been revised to reflect the following correction:

Correction: January 16, 2013

An earlier version of this article misspelled the surname of a senior researcher at the Citizen Lab Internet research group. She is Sarah McKune, not McCune.

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Pakistan Supreme Court Orders Arrest of Prime Minister

ISLAMABAD (Reuters) - Pakistan's Supreme Court has ordered the arrest of the prime minister in connection with a corruption case linked to power projects, television channels reported, plunging the country into fresh political turmoil.

The surprise move came as a populist cleric, who is believed to be backed by the military, demanded the resignation of the government in protests attended by thousands of followers in the heart of the capital Islamabad.

(Reporting by Mehreen Zahra-Malik; Writing by Michael Georgy)

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