Body of Missing Mom Reportedly Found in Turkey

The body of an American woman who went missing while on a solo trip to Turkey has been pulled from a bay in Istanbul, and nine people have been held for questioning, according to local media.

Sarai Sierra, 33, was last heard from on Jan. 21, the day she was due to board a flight home to New York City.

The state-run Andolu Agency reported that residents found a woman's body today near the ruins of some ancient city walls in a low-income district, and police identified the body as Sierra.

Rep. Michael Grimm, R-NY, who with his staff had been assisting the Sierra family in the search, said he was "deeply saddened" to hear the news of her death.

"I urge Turkish officials to move quickly to identify whomever is responsible for her tragic death and ensure that any guilty parties are punished to the fullest extent of the law," he said in a statement.

Courtesy Sarai Sierra's family

Footage Shows Missing New York Mom in Turkish Mall Watch Video

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The New York City mother, who has two young boys, traveled to Turkey alone on Jan. 7 after a friend had to cancel. Sierra, who is an avid photographer with a popular Instagram stream, planned to document her dream vacation with her camera.

"It was her first time outside of the United States, and every day while she was there she pretty much kept in contact with us, letting us know what she was up to, where she was going, whether it be through texting or whether it be through video chat, she was touching base with us," Steven Sierra told ABC News before he departed for Istanbul last Sunday to aid in the search.

Steven Sierra has been in the country, meeting with U.S. officials and local authorities, as they searched for his wife.

On Friday, Turkish authorities detained a man who had spoken with Sierra online before her disappearance. The identity of the man and the details of his arrest were not disclosed, The Associated Press reported.

The family said it is completely out of character for the happily married mother, who met her husband in church youth group, to disappear.

She took two side trips, to Amsterdam and Munich, before returning to Turkey, but kept in contact with her family the entire time, a family friend told ABC News.

Further investigation revealed she had left her passport, clothes, phone chargers and medical cards in her room at a hostel in Beyoglu, Turkey.

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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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Football: Fergie surprised by Beckham's PSG move

LONDON: Alex Ferguson admits he was surprised to see his former Manchester United star David Beckham sign for Paris St Germain.

Beckham had been looking for a new club since leaving LA Galaxy in November and snubbed interest from several Premier League clubs and other lucrative offers from around the world to join the French outfit on transfer deadline day.

Ferguson didn't think Beckham would come back to the Premier League as the boyhood United fan had previously said he could never play for another English club.

But the United manager was still shocked to see the 37-year-old former England captain unveiled by PSG on Thursday.

"I was surprised. I didn't see that," Ferguson told MUTV. "I didn't think he would join an English club.

"He always said he wouldn't after his career with United and he was true to his word. But I don't think anyone saw PSG coming."

While Beckham completed his high-profile move, English football was engaged in a typically frenzied finish to the January transfer window and Ferguson had no intention of being drawn into the mad scramble for new players.

"It is an absolute shambles," he said.

Referring to television coverage of the final hours of the window, which features reporters standing outside the training grounds and stadiums of all Premier League clubs, Ferguson said: "There is a young reporter being mobbed by 30 kids. It is humiliation. I am sure all the managers are glad it is all over."

- AFP/jc

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Attorney: Slain prosecutor brought gun to work

By Michael Martinez and Mariano Castillo, CNN

updated 7:29 PM EST, Fri February 1, 2013

STORY HIGHLIGHTS

• NEW: Slain Texas prosecutor began carrying a gun to work daily, friend says


• NEW: Mark Hasse used a different courthouse exit every day, the attorney tells CNN


• NEW: Prosecutor didn't explain why he was fearful, she says


• NEW: Sheriff's chief deputy says he hadn't heard of fears and the gun carrying

(CNN) -- The Texas prosecutor shot to death in broad daylight outside a courthouse had feared for his life and carried a gun to work, according to a Dallas attorney describing herself as his friend.

Colleen A. Dunbar told CNN that she spoke with Kaufman County Assistant District Attorney Mark Hasse on January 24, and he told her he began carrying a gun in and out of the county courthouse on a daily basis.

Hasse was gunned down in the parking lot while going to work Thursday. Investigators on Friday were reviewing his caseload for possible clues about what led to his killing.

"He told me he would use a different exit every day because he was fearful for his life," Dunbar told CNN.

Assistant District Attorney Mark Hasse was one of 13 prosecuting attorneys in Kaufman County.

She said that Hasse offered no specifics on why he felt threatened, but only that he did. Dunbar said she was "shocked" by the killing.

When told of Dunbar's statements, Chief Deputy Rodney Evans of the Kaufman County Sheriff's Department she he was unaware of the information.

"But," Evans told CNN, "we've got 50 people here taking phone calls so somebody may know something I don't."

There were no significant advances in the case, Kaufman Police Chief Chris Aulbaugh said Friday, but that doesn't mean investigators weren't busy.

"We've fielded numerous tips coming in from the public. We are following up on every one of them," he said.

Police say they believe one or two people committed the crime, but there are few descriptive details because they hid their faces. Police are looking for a gray or silver older model sedan in relation to the case, Aulbaugh said.

Hasse was shot several times after "a very small, very short confrontation," police said.

Investigators are looking into whether Hasse's killing was retribution for any of the prosecutions he led. Hasse was one of 13 prosecuting attorneys in Kaufman County, each of whom handled between 380 and 390 cases.

Authorities hope that an ever-growing reward for information will reveal more leads.

Donors in area have raised $64,500 to be used as reward money, and the police chief has asked for more donations.

The Texas Rangers, the FBI and agents from the Bureau of Alcohol, Tobacco, Firearms and Explosives have joined the manhunt.

CNN's David Fitzpatrick contributed to this report.

Part of complete coverage on

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The family of a Chicago teenager killed just a week after she performed in President Barack Obama's inauguration supports using her death to help shape the debate over gun control.

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Katrina spurs transformation of New Orleans schools

(CBS News) NEW ORLEANS -- It was August 2005 when New Orleans nearly drowned. Hurricane Katrina broke through levees in 53 places, flooding 80 percent of the city. More than 1,100 people died.

New Orleans Mayor Mitch Landrieu

/

CBS News

But in catastrophe, there was opportunity. One of the biggest was recreating a school system from scratch. We asked Mayor Mitch Landrieu about that Friday.

SCOTT PELLEY: Paint the picture for me. What was the New Orleans school system the day after Katrina?

MITCH LANDRIEU: It was gone. It never existed. Every building was under water. But what also happened was structurally, in terms of governance, it just disappeared. Everybody that worked for the system didn't exist anymore, in terms of the jobs that were there or the schools. And we had to piece it back together.

They pieced it back, not as the traditional school system it was, but as a charter school system with teachers and principals hired, fired and promoted based on merit and parents given the freedom to choose schools they like.

LANDRIEU: One of the things that we had the ability to do was to actually physically rebuild every school with FEMA reimbursements and with other money. Now, we didn't put the school back like it was. We built a 21st century, state-of-the-art, knowledge-based school.

PELLEY: You've been doing this a little over five years. What have you accomplished?

LANDRIEU: What's happening now is the achievement level of the kids in the inner city is now beginning to match the kids on the statewide level in a very, very short period of time. And finally, if you go into any charter school in New Orleans right now, and you ask a kid when is he going to graduate, what he tells you is when he's going to graduate from college. And so they really have their eyes focused on, "I've got a future ahead of me. I intend to finish school. I don't intend to drop out."

Super Bowl hosting "big lift" post-Katrina, mayor says
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Simone Smith

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CBS News

Simone Smith has applied to 13 universities. She's a senior who chose to go to a high-performing science school called Sci Academy.

SIMONE SMITH: I want to go to Princeton. I very much want to go to Princeton.

PELLEY: What are the dreams?

SMITH: I want to be an actress, an attaché, hopefully one day secretary of defense. Yeah, I've got big dreams.

PELLEY: That's a lot of dreams.

Before Katrina, the graduation rate was less than 50 percent. Now it's more than 75 percent. Test scores are up 33 percent.

PELLEY: What did it mean to you to be able to pick the high school that you went to?

SMITH: It meant everything. I don't think I would be here if I wasn't able to pick the high school that I wanted to go to. Because I don't feel like you can be truly educated without having a choice. I think having a choice is kind of education.

Mayor Landrieu gave great credit to the Teach for America program, which sent 375 teachers from all over the country to New Orleans.

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Hillary Clinton Says Goodbye...Until 2016?

Feb 1, 2013 6:48pm

Image Credit: Manuel Balce Ceneta/AP Photo

After four years, nearly a million miles traveled and 112 countries visited, Hillary Clinton stepped down as the 67th secretary of state on Friday. But even on this, her final day as America’s top diplomat, she could not escape the questions about what she’ll do four years from now.

Many of the 1,000 employees who gathered to see her off expressed hope that this was not the end of her political career.

“2016! 2016!” the crowd chanted as   Clinton waved and drove away. “We’ll Miss You!”

Right before her departure, Clinton gave the traditional farewell speech to staff on the steps of the State Department’s historic C street lobby. In a roughly 10 minute, often reflective speech she called the 70,000 State Department employees part of “a huge extended family.”

“I cannot fully express how grateful I am to those with whom I have spent many hours here in Washington, around the world and in airplanes,” she said, drawing laughter from the audience.

Clinton’s trademark sense of humor was on display, even as she grew emotional  speaking about how much the State Department had  meant to her over the last four years.

PHOTOS: Hillary Clinton Through the Years

“I am very proud to have been secretary of state. I will miss you. I will probably be dialing ops just to talk,” she joked to a cheering and laughing crowd. “I will wonder what you all are doing, because I know that because of your efforts day after day, we are making a real difference.”

But  Clinton also was somber when discussing the danger diplomats and foreign service officers face all over the world, using Thursday’s suicide bombing attack against the U.S. Embassy in Ankara, Turkey, in which a Turkish guard was killed, as an example.

“We live in very complex and even dangerous times, as we saw again just today at our embassy in Ankara, where we were attacked and lost one of our foreign service nationals, and others injured,” said Clinton “But I spoke with the ambassador and the team there. I spoke with my Turkish counterpart. And I told them how much we valued their commitment and their sacrifice.”

Clinton was flanked by trusted deputies, Bill Burns and Tom Nides, whom she gave warm hugs to at the end of the speech. With a huge “Thank You” sign behind her she walked a rope line after finishing her speech, greeting the hordes of employees who wanted to shake her hand and say goodbye before she walked out of the State Department as secretary of state for the last time.

“It’s been quite a challenging week saying goodbye to so many people and knowing that I will not have the opportunity to continue being part of this amazing team,” Clinton said. “But I am so grateful that we’ve had a chance to contribute in each of our ways to making our country and our world stronger, safer, fairer and better.”

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Swarm-mongering: Brainless blobs flock together

Birds of a feather flock together and now so do brainless, inanimate blobs. Made of microscopic particles, the artificial swarms could shed light on the mysterious mechanisms behind the natural swarming seen in fish and birds. They might also lead to materials with novel properties like self-healing.

Animals such as birds, fish and even humans that move together in swarms have individual intelligence, but Jérémie Palacci of New York University and colleagues wondered whether inanimate objects could also swarm. "From a physicist's point of view, if many different systems behave in the same way there must be an underlying physical rule," he says.

To explore this idea, the team created microscopic plastic spheres, each one with a cubic patch of haematite, an iron oxide, on its surface. When submerged in hydrogen peroxide, the spheres spread out in a disordered fashion. The team then shone blue light on the particles, causing the haematite cubes to catalyse the breakdown of any nearby hydrogen peroxide into water and oxygen. As hydrogen peroxide concentration dropped temporarily in these regions due to the reaction, osmotic forces cause more hydrogen peroxide to flow into them, and that in turn buffets the spheres. The whole process then repeats.

Self-healing swarm

When two spheres come close enough to each other, the balance of chemical forces shifts so that the two spheres are attracted. If there are enough spheres in the same place they will cluster together to form shapes of symmetrically arranged particles, which the team call crystals (see video, above). These crystals continue to be buffeted by the movement caused by the breakdown of hydrogen peroxide – but now they move together as one object, replicating a life-like swarm. Switch off the light, however, and the reaction stops, causing the crystal to lose the forces that hold it together, and the particle distribution becomes disordered once again.

"This system shows that even though the particles have no social interaction or intelligence, you can exhibit collective behaviour with no biology involved," says Palacci. Since the haematite is magnetic, it is even possible to steer the crystals in one direction by applying a magnetic field. Such control might be useful if the artificial swarms are to be harnessed for applications.

As the particles automatically fill any gaps that form in the crystal, again thanks to the chemical dynamics of the system, they could be used to create a self-assembling, self-healing material. The work is published in the journal Science today.

Schooled by fish

Iain Couzin of Princeton University says these kinds of systems are very useful for studying biological collective behaviour because researchers have complete control over their interactions – unlike natural systems.

His team has its own swarming experiment published in the same issue of Science, based on schools of fish that prefer to stay in shade. Their paper shows that shining a light on some of the fish in the school causes them to speed up, to get away from the light. But as a result, non-illuminated fish also speed up, even though, if acting purely as individuals, they would have had no reason to do so. "We show just by using simple interactions that schools can have a sense of responsiveness to the environment that individuals do not have," he says.

Couzin sees no reason why such behaviour should be limited to natural systems. "In future it may be possible to create systems of particles that can make collective decisions – something we often think of as only possible in biological systems," he says.

Journal references: Living crystals: Science, DOI: 10.1126/science.1230020; Fish: Science, DOI: 10.1126/science.1225883

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14 dead in Mexico City skyscraper blast: government

MEXICO CITY: At least 14 people died and 80 were injured in a blast that rocked the Mexico City skyscraper that houses the headquarters of oil giant Pemex on Thursday, Mexico's interior minister said.

"We have 13 dead at the scene and one more at the hospital. There are more than 80 wounded and we continue to look for survivors in the debris," Interior Minister Miguel Angel Osorio Chong told reporters.

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14 killed in blast at offices of Mexican state oil company

By CNN Staff

updated 7:55 PM EST, Thu January 31, 2013

STORY HIGHLIGHTS

• NEW: Witness: "People were screaming. ... You could see pieces of the wall falling"


• Fourteen people were killed in the blast, Mexico's interior minister says


• At least 80 people were injured, he says


• Some people are trapped in building's basement, the CNN affiliate says

Mexico City (CNN) -- An explosion rocked the offices of Mexico's state oil company Thursday, killing at least 14 people and injuring dozens more, the country's interior minister said.

At least 80 people were injured in the Mexico City blast, Interior Minister Miguel Angel Osorio Chong told reporters.

Dozens of people were trapped in the building after the blast, Foro TV reported.

Rescuers were searching for survivors in basement of the large office tower, Osorio Chong said.

"People were screaming. ... You could see pieces of the wall falling to the ground," said Joaquin Borrell Valenzuela, an attorney for the Pemex comptroller's office who was in a courtyard outside the building at the time of the blast.

The blast prompted an evacuation of personnel from the Pemex offices, a company spokesman told Notimex.

A large plume of smoke rose near the office tower after the explosion.

Images from the scene showed emergency rescue teams carrying people on stretchers.

Authorities said helicopters carried some of the wounded to hospitals.

It was unclear what caused the explosion, which occurred in the building's basement, Pemex spokesman Francisco Montano told Notimex.

CNN's Rafael Romo, Edwin Mesa, Christine Theodorou, Rey Rodriguez and Rene Hernandez and CNNMexico.com contributed to this report.

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14 dead, 80 injured in Mexico oil company blast

Updated 7:52 PM ET

MEXICO CITY An explosion at the main headquarters of Mexico's state-owned oil company in the capital Thursday killed 14 people and injured 80 as it heavily damaged three floors of the building, sending hundreds into the streets and a large plume of smoke over the skyline.

There were also reports that as many as 30 people were trapped in the debris from the explosion, which occurred in the basement of an administrative building next to the iconic, 52-story tower of Petroleos Mexicanos, or Pemex. There was no immediate cause given for the blast.

"It was an explosion, a shock, the lights went out and suddenly there was a lot of debris," employee Cristian Obele told Milenio television, adding that he had been injured in the leg. "Co-workers helped us get out of the building."

The tower, where several thousand people work, was evacuated. The main floor and the mezzanine of the auxiliary building, where the explosion occurred, were heavily damaged, along with windows as far as three floors up.

"We were talking and all of sudden we heard an explosion with white smoke and glass falling from the windows," said Maria Concepcion Andrade, 42, who lives on the block of Pemex building. "People started running from the building covered in dust. A lot of pieces were flying."

A reporter at the scene saw rescue workers trying to free several workers trapped. Television images showed people being evacuated by office chairs, and gurneys. Most of them had injuries likely caused by falling debris.

Police landed four rescue helicopters to remove the dead or injured. About a dozen tow trucks were furiously moving cars to make more landing room for the helicopters.

In an earlier Tweet, the company said it had evacuated the building as a precautionary measure because of a problem with the electrical system in the complex that includes the skyscraper. It tweeted that several workers were injured.

Streets surrounding the building were closed as evacuees wandered around, and rescue crews loaded the injured into ambulances.

Interior Department spokesman Eduardo Sanchez confirmed that an explosion in a basement garage damaged the first and second floors of the auxiliary building, which is located in a busy commercial and residential area.

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