Body of missing American found in Turkey

STORY HIGHLIGHTS

• Body of New York woman found in Istanbul


• She disappeared almost two weeks ago


• Sarai Sierra was a mother a two


• She failed to arrive at Newark, New Jersey, airport

(CNN) -- The family of an American woman who went missing in Istanbul nearly two weeks ago is in mourning after learning that Turkish police found her body Saturday.

Steven Sierra wept during a phone call with CNN, as he waited in Istanbul to go with police to identify the body of his wife, Sarai Sierra.

Turkish police found the New York woman's body near ancient stone walls in Istanbul's Sarayburnu district, the semi-official Anatolian Agency reported. Police suspected she had been killed at another location.

Police told CNN's sister network CNN Turk that the body of the 33-year-old mother of two showed signs of stab wounds.

At least nine suspects had been detained in connection with Sierra's disappearance and death, Anatolian reported.

Sierra's family and friends first sounded the alarm last week after she did not arrive on a return flight from Istanbul on January 22.

"The last we heard from my wife was Monday morning on the 21st. She had spoken with her sister and the last thing she said was, 'I'm coming home tomorrow,' and she was excited and put a little smiley face at the end of her statement," said Steven Sierra in an interview with CNN earlier this week.

Steven Sierra spoke to CNN in Istanbul on Wednesday, after he and Sarai Sierra's brother, David Jimenez, traveled to Turkey to assist in the search.

The worried husband was periodically overwhelmed with emotion throughout the interview.

"You're hoping that she's OK wherever she's at, that she's not hurting, that she's not cold, that she's being fed," Steven Sierra said, choking back tears.

"Its difficult what's going through my mind, if our hopes and prayers are not answered. It is difficult when you have two children that look up to you, and you have to do your very best to stay strong regardless of what happens."

Sarai Sierra flew alone to Istanbul on January 7 after a friend at the last minute canceled plans to accompany her.

"She did a lot of researching about the area, about where she was going to stay, the safest places to go and the time of day to travel," friend Magalena Rodriguez said.

Sierrra was an amateur photographer who had amassed more than 3,000 followers since she joined the photo sharing app Instagram last year.

Some people she met through the service encouraged her to visit the ancient Turkish city, her husband said. They offered to act as tour guides. "You're admiring pictures, but you're getting acquainted with people that you've never met before," Steven Sierra said.

Sarai's brother said he had been worried about his sister's solo trip.

"We were nervous. Were just like 'always be mindful of what you do, be aware of your surroundings. Don't get too comfortable to the point where you drop your guard down,'" David Jimenez said.

But Jimenez and Sierra's husband said Sarai was determined to complete challenges that she set for herself.

As an example, they described how she competed in a triathlon several years ago, despite being a weak swimmer, and despite the fact that she did not own a bicycle. Instead, Sarai completed the cycling leg of the competition by borrowing a mountain bike from her husband.

After arriving in Istanbul, Sierra's photo feed displayed images of Istanbul's beautiful skyline and historic landmarks.

She also squeezed in an excursion to Amsterdam in the Netherlands and to Germany, starting January 15.

"She chose to go to Amsterdam for the graffiti," her husband said. "She informed me as far as how her time was out there. And she also had a tour guide that was helping her out there as well, who I know about and who I've spoken with personally."

Sierra returned to Istanbul on January 19. Three days later, she went missing.

Sierra had rebooked her flight to arrive back early, on January 22, in part to surprise her two sons, 9 and 11.

Days before her scheduled trip home, Sierra spoke with her father, Dennis Jimenez, via Skype to remind him of her flight number and arrival time.

When Dennis Jimenez went to the Newark, New Jersey, airport to pick Sierra up, she didn't show, he said.

The airline told him she had never checked in for the flight.

"She kept in contact with us all the time," Sierra's mother, Betzaida Jimenez, said. "And then not to hear from her? It's not like her."

After the tourist went missing, Turkish police released a surveillance camera video of Sarai at a shopping mall in Istanbul, flipping through her iPad.

The scenes from January 20 are the last known images of her.

The manager of the small private hotel where Sierra was staying reported last seeing her the day the surveillance video was shot. That was a Sunday.

Her Skype account, which she avidly used, went silent a day later. A day after that was when she missed her flight home.

The time she last talked with her family, Sierra was planning on January 21 to see the Galata Bridge and visit the Asian side of Istanbul, her husband said.

The former capital of the Byzantine and East Roman empires straddles the continents of Europe and Asia.

After Sierra's family raised the alarm that she was missing, some of her belongings -- including her passport and medical cards -- were found in her room in Istanbul, though her iPhone and iPad were not there, according to her husband.

Since Sierra's disappearance, Turkish police detained a Turkish man she had been in contact with who was identified only by the first name Talan, according to CNN Turk.

Millions of foreign tourists visit Turkey every year.

While it is not unusual to hear about foreigners being targeted by pickpockets and bag snatchers, violent crime involving foreign tourists is relatively rare.

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Town mourns for slain bus driver amid Ala. standoff

Updated 9:45 PM ET

MIDLAND CITY, Ala. As the police standoff with an Alabama man accused of holding a 5-year-old boy hostage continued Saturday, a nearby community prepared to bury the beloved bus driver who was shot to death trying to protect children on his bus when the episode began days earlier.

Charles Albert Poland Jr., 66, who was known around town as Chuck, was described by folks in his hometown of Newton as a humble hero. Hundreds of people attended a viewing service for Poland on Saturday evening. His funeral was set for Sunday afternoon.

"I believe that if he had to do it all over again tomorrow, he would," said Poland's sister-in-law, Lavern Skipper, earlier Saturday. "He would do it for those children."

Play Video

Ala. hostage standoff: New info on kidnapper

Authorities said Jim Lee Dykes boarded a stopped school bus filled with 21 children Tuesday afternoon and demanded two boys between 6 and 8 years old. When Poland tried to block his way, the gunman shot him several times and took one 5-year-old boy — who police say remains in an underground bunker with Dykes.

Dale County Sheriff Wally Olson said in a briefing with reporters Saturday that Dykes has told them he has blankets and an electric heater in the bunker on his property. Authorities have set up a command post at a church and have been communicating with Dykes through a ventilation pipe to the underground bunker.

Olson also said Dykes has allowed police to deliver coloring books, medication and toys for the boy.

"I want to thank him for taking care of our boy," Olson said. "That's very important."

The shooting and abduction took place in Midland City, a small town near Dothan, Ala., in the state's southeastern corner.

Newton is about three miles away, a small hamlet with fewer than 2,000 residents. It sits amid cotton farms and rolling hills sprinkled with red earth; most of the residents commute to Dothan or to a nearby Army post.

William Lisenby, a school bus driver who also taught Sunday School with Poland, was flanked by other area bus drivers as he arrived at Saturday night's viewing service for his friend at a local funeral home.

Lisenby spoke in Biblical terms when referring to Poland.

Bus driver Charles Albert Poland Jr. is seen in this undated picture released by the Dale County Board of Education.

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AP Photo/Dale County Board of Education

"If you'll notice the similarities there, of what Chuck did was the same thing that Jesus Christ did. These children, even though they were not Chuck's, he laid down his life to defend those children. My hat's off to him for that."

"He was a bus driver just like we are," Lisenby said. "But for the grace of God that could have been us."

Others spoke of the loss of a good man, and their hope that the little boy being held captive is alive and well and will be released soon.

"The community is real concerned," said Fred McNab, mayor of Pinckard, Ala. "You can tell by the food that's been carried over there to the church. It's just devastating. We want it to come to a resolution. We want to save that little child."

Earlier Saturday, local residents remembered Poland as a friendly, giving person.

"He's probably the nicest guy you'll ever meet," said Lonnie Daniels, the 69-year-old owner of the NAPA Auto Parts store, one of three establishments in town that was open Saturday.

Daniels last saw his friend Tuesday morning, when Poland agreed to buy a car from him. The two men shook hands and closed the deal "like gentlemen," Daniels said. Poland was to return after working his bus route to pay for the car.

"He never came back," Daniels said quietly.

Play Video

Ala. hostage crisis: Behind-the-scenes of a negotiation

Daniels said Poland had been married to his wife for 43 years. Poland was from Idaho, but his wife was from Newton. The couple lived there for decades in a small mobile home, and Poland enjoyed gardening and clearing brush from his property.

"I knew that he was always there if I needed," said Daniels, adding that Poland was an excellent mechanic with an array of tools that he lent to people in town.

Neighbors and friends said Poland did various acts of kindness for people in town, from fixing someone's tractor to tilling the garden of a neighbor who had a heart attack.

"You don't owe me anything," Poland once told a recipient of his good deed. "You're my neighbor."

Skipper said Poland and his wife would often sit on their porch, drinking coffee, praying and reading the Bible.

"They loved to be together," Skipper said.

On Saturday morning, Poland's wife wasn't home. A rack of worn trucker's caps sat on hooks on the porch, and two freshly baked pies were laid atop a cooler.

The victim's son, Aaron Poland, told NBC News that he wasn't surprised by his father's act to protect the kids on the bus.

"He considered them his children," Poland said, choking back tears. "And I know that's the reason why my dad took those shots, for his children, just like he would do for me and my sister."

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Gun Violence 'Depletes Precious Natural Resource'

It took the mass shooting in Newtown, Connecticut, to prompt lawmakers to call for stricter gun legislation. But the reality is that in a city like Chicago, where 515 murders took place last year and more than 100 shooting incidents have occurred since January 1, gun violence is an ongoing issue and it has been for years. Only, these shootings have become so common that they don't make national headlines.

"We lost a classroom full of children in Connecticut which sparked national outrage that needs to be translated into action, but in Chicago, we sometimes lose a dozen or more young people every weekend," Rep. Luis Gutierrez (D-Illinois), who serves the Chicago area, said in a statement. "Too many bullets and too many guns are killing the next generation and we have got to make it stop."

Gutierrez, like many others, believe that any debate about gun violence shouldn't just take into account mass shootings that make headline news. It should also consider the chronic gun violence that takes place on a daily basis across the U.S.

In Chicago's case, many of the victims are young minorities growing up in poor, gang-ridden neighborhoods on the south and west side of the city.

Just earlier this week a 15-year-old girl who performed at President Barack Obama's recent inauguration was gunned down, The Washington Post reported.

The teen, Hadiya Pendleton, was hanging out in a park with about a dozen other young people when she was shot. Two other victims were reportedly wounded. By all accounts she was in the wrong place at the wrong time. Reports indicate that the gunman was not even aiming at her.

And Pendleton is just the latest example. Chicago police officer Ron Holt lost his son, Blair, to gun violence in the spring of 2007. The 16-year-old was shot and killed while riding a bus after school.

Holt now works with young people in the community, particularly minorities at an increased risk of engaging in dangerous behavior, to encourage them to focus on their education instead of turning to violence.

"I explain to them that if they continue to ascribe to this diabolical idea of resolving conflict with firearms they're depleting the most precious natural resource in the community, and that is them," Holt said.

What's clear is that the root of the gun problem is not just the guns. There are several factors that play a role, many of which are rarely discussed. For example, for minority youth living in urban communities characterized by poverty, violence, particularly gun violence, tends to be chronic. And the groups largely impacted tend to be African American and Hispanic.

A lot of that has to do with acculturation, according to Rahsmia Zatar, executive director of Strong Youth, a gang prevention and intervention organization. There is a sense that it's difficult to move beyond one's cultural sphere.

As a result, minorities often tend to gravitate toward other young minorities in similar situations, and turn to violence to gain a sense of control, however false it really is.

Charles Rex Arbogast/AP Photo

"It's easy to fall victim to feeling a sense of empowerment through violence," Zatar said. "They feel they have limited opportunities and they don't have a sense of 'I can achieve,' [or] that there is something here for me that's better."

According to the 2011 American Community Survey by the U.S. Census Bureau, more than 30 percent of Chicago's African-American population and nearly 27 percent of Hispanics live below the poverty line. Perhaps more importantly, blacks and whites remain largely segregated, with African-Americans making up the vast majority of neighborhoods in the south, and whites comprising most of the north. Latinos are somewhat more mixed, often living in "buffer" communities between blacks and whites, which could exacerbate the pressure to conform to two cultures, neither of which is entirely comfortable.

These various enclaves also suffer from a distinct gang problem. Chicago Police Commissioner Garry McCarthy told Reuters the city is plagued by the breakup of larger more established gangs into new factions that are fighting over everything from turf to money.

Then there's the city's illicit gun issue, which is bigger than New York's or Los Angeles' despite strict laws to limit weapons. Gun shops are actually outlawed in Chicago, as are assault weapons and high-capacity magazines. Handguns were even banned until 2010.

Still, in a place like Chicago it's handguns doing the most damage. According to statistics from the Bureau of Alcohol, Tobacco, Firearms and Explosives, most of the guns they recovered in Illinois were pistols, followed by revolvers and rifles. Machine guns come in a distant sixth.

Why so many guns? Gun laws in neighboring communities are not as strict, and firearms make their way into the city. According to a recent article by The New York Times, officials "seized 7,400 guns [in Chicago] in crimes or unpermitted uses last year (compared with 3,285 in New York City), and have confiscated 574 guns just since Jan. 1 — 124 of them last week alone."

And while Chicago residents are required to report the loss or theft of a handgun, that same law does not apply to all of Illinois, so a stolen firearm could easily make its way into Chicago without the owner ever reporting it missing.

The dynamics created in poor minority communities like those in Chicago combined with the sheer number of guns that make their way into such a city bear out in the overall statistics.

According to the Bureau of Justice's National Crime Victimization Survey, African Americans were disproportionately represented among homicide victims and offenders between 1980 and 2008. They were six times more likely than whites to be homicide victims and seven times more likely than whites to commit homicides.

Latinos don't fare much better. According to the National Council of La Raza, the nation's largest Hispanic advocacy organization, "Today in America, every three hours a young person is killed by firearm violence. Every 14 hours, that teen or child is Latino."

Young Latinos are especially likely to be impacted by gang violence in places like Chicago. Nationally, Hispanics are also more likely than non-Hispanics to be victims of violent crimes committed by gang members.

The impact of guns on the Latino community may explain why they're inclined to favor increased gun control. According to the Pew Research Center, while 57 percent of whites think it's more important to protect the rights of Americans to own guns than to protect gun ownership, only 29 percent of Latinos feel the same way.

Holt would certainly like to see something change. Several days after his son was killed, he received a voicemail. It was then-Senator Barack Obama. The young lawmaker had called Holt to express his condolences and to promise that if there was anything he could do in the future to help curb gun violence, he was prepared to do it. The two never spoke on the phone, but Holt remembers the message.

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Astrophile: A scorched world with snow black and smoky

Astrophile is our weekly column on curious cosmic objects, from the solar system to the far reaches of the multiverse

Object: Titanium oxide snow
Location: The hot-Jupiter planet HD 209458b

There is something magical about waking up to discover it has snowed during the night. But there's no powdery white blanket when it snows on exoplanet HD 209458b. Snow there is black, smoky and hot as hell – resembling a forest fire more than a winter wonderland. Put it this way: you won't be needing mittens.

HD 209458b belongs to a family called hot Jupiters, gas-giant planets that are constantly being roasted due to their closeness to their sun. By contrast, the gas giants in our immediate neighbourhood, including Jupiter, are frigid, lying at the solar system's far reaches.

HD 209458b is also noteworthy because it is tidally locked, so one side is permanently facing towards its star while the other is in perpetual night. On the face of it, these conditions wouldn't seem to invite snow: temperatures on the day side come close to 2000° C, while the night side is comparatively chilly at around 500° C.

Snow made of water is, of course, impossible on this scorched world, but the drastic temperature differential sets up atmospheric currents that swirl material from the day side to night and vice versa. That means that any substances with the right combination of properties might be gaseous on the day side and then condense into a solid on the night side, and fall as precipitation. Say hello to titanium oxide snow.

Stuck on the surface

Although oxides of titanium make up only a small component of a hot Jupiter's atmosphere, these compounds have the right properties to fall as snow. But there was a snag that could have put a stop to any blizzards. Older computer models of hot Jupiters suggested that titanium oxides condensing in the air on the night side would snow – and remain on the relatively cool surface forever. "Imagine on Earth if you had no mechanism to evaporate water, it would never rain," says Vivien Parmentier of the Côte d'Azur Observatory in Nice, France.

Now he and colleagues have created a more detailed 3D computer model that shows that the snow can become a gas again as it falls and the temperature and pressure increase. Strong updraughts can then blow the titanium oxides back to the upper atmosphere. "The gas can come back on the top layers and snow again and again," says Parmentier.

Snowfall on HD 209458b would be like none you've ever seen. Though titanium dioxide is white and shiny, for example, the snowflakes would also contain silica oxides from the atmosphere, making them black. Since the atmosphere is also dark, snowstorms on the planet would be a smoky affair, the opposite of the white-outs we get on Earth. "It would be like being in the middle of a forest fire," says Parmentier.

Although the team studied a particular hot Jupiter, their model should apply equally to other planets of this type, suggesting hot snow is a common occurrence. Parmentier says we may have already spotted snow clouds on another hot Jupiter, HD 189733b, as spectral analysis of the planet suggests the presence of microscopic particles in its atmosphere.

David Sing of the University of Exeter, UK, who helped identify such particles on HD 189733b, says the team's new model goes a long way to explaining how titanium oxides behave on hot Jupiters. "We're pretty used to water condensing on Earth; there it is titanium because the temperatures are so much hotter."

Hot, black snow – now that would be something to wake up to.

Reference: http://arxiv.org/abs/1301.4522

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Projected 6.9m population basis for healthcare planning: Gan

SINGAPORE: Health Minister Gan Kim Yong said the projected 6.9 million population by 2030 in the White Paper will serve as a basis for planning efforts to ensure sufficient capacity in the healthcare sector.

He also said his ministry is adjusting its plans to be able to meet future healthcare needs.

Mr Gan stressed that the 6.9 million figure is not a target.

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Clinton's final day in job marred by bombing

STORY HIGHLIGHTS

• NEW: Kerry sworn in, first trip likely to include stops in Egypt and Israel


• Clinton cites Turkey attack as example of challenges in the world


• Clinton visited 112 countries and flew almost 1 million miles in four years


• At 65, Clinton faces questions about whether she'll run for president in 2016

Washington (CNN) -- A final meeting with the president. A farewell address to the State Department staff. A terrorist attack at the U.S. Embassy in Turkey.

Hillary Clinton's last day as secretary of state on Friday seemed to be a microcosm of her four globe-trotting years as America's top diplomat.

The former first lady had a full schedule, as usual, meeting in private with President Barack Obama at the White House and then attending the send-off ceremony with clapping, cheering workers at the agency she led.

Those events were clouded by a suicide bombing earlier in the day in Ankara that killed the attacker and a Turkish security guard at the embassy. No Americans were killed or injured.

Hillary Clinton through the years

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Clinton traveled nearly 1 million miles and visited 112 countries in her quest as secretary to promote better understanding of the United States and its role in the world.

On the road with Hillary Clinton

However, her tenure will also be remembered for last September's attack on a diplomatic compound in Benghazi, Libya, that killed Ambassador Christopher Stevens and three other Americans.

Amid the good wishes and emotions of Clinton's farewell, Friday's bombing in Turkey was a grim reminder of the continuing threats and challenges to U.S. diplomatic efforts.

"Of course we live in very complex and dangerous times as we saw again just today at our embassy in Ankara," Clinton told the State Department ceremony.

"I know the world we are trying to help bring into being in the 21st century will have many difficult days," she added. "But I am more optimistic today than I was when I stood here four years ago."

Standing in front of a sign that said "Thank You," Clinton told the staffers jamming the area that she would miss them and the important work they do around the world.

"I will probably be dialing ops just to talk," she said to laughter.

Clinton sent her resignation letter to Obama a few hours before her successor, John Kerry, was sworn in on Friday afternoon.

Opinion: Clinton, secretary of empowerment

"It has been an honor to serve in your administration and to represent our country around the world," the letter said.

"I am proud of what we have accomplished together on behalf of the American people and in pursuit of our interests and values. And I am more convinced than ever in the strength and staying power of America's global leadership and our capacity to be a force for good around the world," she said.

In what was billed as Clinton's farewell speech on Thursday at the Council on Foreign Relations, she said the United States needs to build "smart power" in a world where the levers of influence are changing rapidly.

American diplomats have to work with entrepreneurs and activists, use new technological tools such as social media and update the global and regional institutions that have dominated international affairs since World War II, Clinton said.

"We need a new architecture for a new world -- more Frank Gehry than formal Greek," she said. "Now some of his work at first might appear haphazard, but in fact, it's highly intentional and sophisticated. Where once a few strong columns could hold up the weight of the world, today we need a dynamic mix of materials and structures."

Clinton defends her diplomatic legacy

Clinton called the United States "uniquely well-positioned" to help construct that metaphorical global edifice.

"Those things that make us who we are as a nation --- our openness and innovation, our diversity, our devotion to human rights and democracy --- are beautifully matched to the demands of this era and this interdependent world," she said.

Kerry, who served nearly 30 years in the Senate, stepped down Friday ahead of his swearing-in as the nation's 68th secretary of state.

He was chairman of the Senate Foreign Relations Committee and the Democratic nominee for president in 2004, when he lost to incumbent President George W. Bush.

Kerry expects to take his first official overseas trip in coming weeks, according to a U.S. official who said stops would likely include Israel and Egypt.

Exiting State, Clinton looks to writing, speaking

Clinton, 65, now faces persistent questions about whether she will mount a second White House run in 2016 to break perhaps the highest remaining glass ceiling.

"Well I'm not thinking about anything like that right now. I'm looking forward to finishing my tenure as secretary of state and catching up on 20 years of sleep deprivation," Clinton said Tuesday at a global "town hall" forum in Washington.

Observers note her answer was a less emphatic denial than previous responses that seemed to rule out any possibility of reentering the political fray.

According to a CNN/ORC International poll conducted last month, 85% of Democrats and independents who lean toward the Democratic Party said they would be very or somewhat likely to support Clinton if she sought the Democratic nomination.

Clinton was considered a favorite in 2008, but Obama, who served with her in the Senate, got an early jump in the primaries. Clinton was unable to capture the momentum in a fierce political battle.

Despite the rugged campaign, Obama chose Clinton for his Cabinet and she embraced the role.

In a joint interview with CBS that aired on Sunday, Obama said that he believes Clinton's legacy will rank among the best.

"It has been a great collaboration over the last four years," Obama said. "I'm going to miss her."

Clinton touts 'smart power' in farewell talk

CNN's Elise Labott, Jill Dougherty and Matt Smith contributed to this report.

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Twitter: 250,000 users' data compromised in hacking attacks

#1157946: Twitter bird logo, social networking and microblogging service, graphic element on white / AP Graphics

Twitter said today that it recently detected a series of attempts to hack into user data, and that the attackers may have successfully absconded with some users' information.

In a blog post Friday afternoon, Twitter explained the situation, and the steps it has taken to fight off the hackers.

This week, we detected unusual access patterns that led to us identifying unauthorized access attempts to Twitter user data. We discovered one live attack and were able to shut it down in process moments later. However, our investigation has thus far indicated that the attackers may have had access to limited user information - usernames, email addresses, session tokens and encrypted/salted versions of passwords - for approximately 250,000 users. As a precautionary security measure, we have reset passwords and revoked session tokens for these accounts. If your account was one of them, you will have recently received (or will shortly) an email from us at the address associated with your Twitter account notifying you that you will need to create a new password. Your old password will not work when you try to log in to Twitter.

Twitter said in the post that a very small number of users were affected by the hacking, but it encouraged everyone who uses the service to ensure that they are practicing "good password hygiene, on Twitter and elsewhere on the Internet." Among its suggestions: using unique passwords of at least ten characters, including a mix of upper and lower case letters, numbers, and symbols. Based on attacks on other high-profile tech and media companies, Twitter also said it is recommending the U.S. Department of Homeland Security's recent advisory on disabling Java, among other precautions.

This attack was not the work of amateurs, and we do not believe it was an isolated incident. The attackers were extremely sophisticated, and we believe other companies and organizations have also been recently similarly attacked. For that reason we felt that it was important to publicize this attack while we still gather information, and we are helping government and federal law enforcement in their effort to find and prosecute these attackers to make the Internet safer for all users.

This article originally appeared on CNET under the headline "Twitter says 250,000 users' data compromised in hacking attacks"

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Gov's Handling of Sandusky Case Under Investigation

The newly-elected attorney general of Pennsylvania is going after the state's governor, Tom Corbett, who was attorney general when child sex allegations against Penn State coach Jerry Sandusky were first brought forward.

Kathleen Kane, a Democrat who was sworn in as attorney general on Jan. 15, said that she will name a special prosecutor in the coming days to investigate Corbett's handling of the Sandusky case. Corbett is a Republican.

The investigation will look specifically at why it took the attorney general's office three years to bring criminal charges against Sandusky while he continued to have access to children.

"Attorney General Kane will appoint a special prosecutor to lead the office's internal investigation into how the Sandusky child abuse investigation was handled by the Office of the Attorney General," Kane's office said in a statement released today.

Corbett's attorney general's office was first notified of the allegations against Sandusky in 2008 when a high school student told his mother and school that Sandusky had molested him. The local district attorney passed the allegation on to the attorney general, then Corbett. Corbett convened a grand jury.

Mario Tama; Patrick Smith/Getty Images

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It wasn't until 2011 that sex abuse charges were filed against Sandusky while Corbett had since become governor. Sandusky was convicted on 45 counts of sex abuse in June 2012.

The charges sent shockwaves throughout Pennsylvania, as Penn State's president, two top officials, and legendary coach Joe Paterno all lost their jobs over the scandal.

"Why did it take 33 months to get Sandusky off the streets? Was the use of a grand jury the right decision? Why were there so few resources dedicated to the investigation? Were the best practices implemented?" the statement from Kane's office read.

"At the end of this investigation, we will know the answers to these questions and be able to tell the people of Pennsylvania the facts and give them answers that they deserve," the statement said.

Describing an interview Kane gave the New York Times, the Times said Kane suggested that Corbett did not want to upset voters or donors in the Penn State community before his gubernatorial run in 2009.

Corbett has denied those suggestions. His office did not immediately return calls for comment.

Kane's office preemptively fought back against the idea that the investigation is politically motivated. Kane, a Democrat, defeated the incumbent attorney general, Linda Kelly, a Republican in November 2011. Corbett is a Republican.

"The speculation that this is about politics is insane," a staff member in Kane's office told ABC News today. "You go anywhere in Pennsylvania and anywhere across the country and you'll find individuals asking, 'why did it take three years? Why was there a grand jury? Why make these kids talk to 30 different people about what happened?"

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Mind-meld brain power is best for steering spaceships

TURNS out two heads really are better than one. Two people have successfully steered a virtual spacecraft by combining the power of their thoughts - and their efforts were far more accurate than one person acting alone. One day groups of people hooked up to brain-computer interfaces (BCIs) might work together to control complex robotic and telepresence systems, maybe even in space.

A BCI system records the brain's electrical activity using EEG signals, which are detected with electrodes attached to the scalp. Machine-learning software learns to recognise the patterns generated by each user as they think of a certain concept, such as "left" or "right". BCIs have helped people with disabilities to steer a wheelchair, for example.

Researchers are discovering, however, that they get better results in some tasks by combining the signals from multiple BCI users. Until now, this "collaborative BCI" technique has been used in simple pattern-recognition tasks, but a team at the University of Essex in the UK wanted to test it more rigorously.

So they developed a simulator in which pairs of BCI users had to steer a craft towards the dead centre of a planet by thinking about one of eight directions that they could fly in, like using compass points. Brain signals representing the users' chosen direction, as interpreted by the machine-learning system, were merged in real time and the spacecraft followed that path.

The results, to be presented at an Intelligent User Interfaces conference in California in March, strongly favoured two-brain navigation. Simulation flights were 67 per cent accurate for a single user, but 90 per cent on target for two users. And when coping with sudden changes in the simulated planet's position, reaction times were halved, too. Combining signals eradicates the random noise that dogs EEG signals. "When you average signals from two people's brains, the noise cancels out a bit," says team member Riccardo Poli.

The technique can also compensate for a lapse in attention. "It is difficult to stay focused on the task at all times. So when a single user has momentary attention lapses, it matters. But when there are two users, a lapse by one will not have much effect, so you stay on target," Poli says.

NASA's Jet Propulsion Lab in Pasadena, California, has been observing the work while itself investigating BCI's potential for controlling planetary rovers, for example. But don't hold your breath, says JPL senior research scientist Adrian Stoica. "While potential uses for space applications exist, in terms of uses for planetary rover remote control, this is still a speculative idea," he says.

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Taiwan premier resigns over flagging economy

TAIPEI: Taiwanese Premier Sean Chen said Friday he has stepped down for health reasons, after the cabinet he heads came under fire for its poor handling of the economy.

"I have some health problems ... and I need to completely change my life and work style to reverse the situation," the 63-year-old finance expert told a press conference to announce his resignation.

"I believe that the economy will improve in the coming year. We have worked very hard on the planning for long-term issues and I hope everybody will continue to support the new team."

Deputy premier Jiang Yi-huah, 53, a scholar-turned-politician and a former interior minister, will take over his job, Chen said.

Chen's departure came as Taiwan's economy grew 1.25 percent in 2012 from a year ago at the slowest pace in three years due to shrinking exports.

Chen, who previously headed the Financial Supervisory Commission, the main industry regulator, had a tense term since taking office as premier in early 2012.

His cabinet frequently came under attacks over the sluggish economy and other controversial policies, with the opposition repeatedly demanding his resignation.

Last year, Chen survived a parliamentary no-confidence vote - only the second in Taiwan history - over what opposition lawmakers deemed as his cabinet's failure to curb rising unemployment and inflation.

Under Taiwan's political system the premier heads the cabinet and is appointed by the president.

- AFP/de

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