Multidimensional black holes get electric when flexed

Bending a black hole can juice it up. In extra dimensions, a black hole behaves like a fluid and a solid at the same time, and flexing the solid form may generate an electric field.

Although these effects exist only in the theoretical realm, the underlying equations could help us puzzle out some of the real-world properties of the hot, superdense matter that existed right after the big bang.

In our four-dimensional universe – three of space and one of time – black holes occupy single points in space-time. String theory says that if you add a fifth dimension, the black hole becomes a black string. Adding a sixth yields a sheet, or a "black brane".

This multidimensional universe has a boundary, which when described mathematically looks a lot like the equations for quark-gluon plasma, a primordial form of matter that can be created fleetingly in particle accelerators but which can be too chaotic to study directly. Effects at this boundary also apply to black brane behaviour, which means branes can be used to glean the properties of quark-gluon plasma.

Brane bender

But describing black branes requires Einstein's equations, which are complex and unwieldy, says Joan Camps at the University of Cambridge, who was not involved in the new work. So one trick is to try to describe them as ordinary materials.

Previously, physicists showed that black branes follow the mathematics of fluid dynamics, which in turn allowed them to accurately predict the viscosity of quark-gluon plasma.

Now Jay Armas of Copenhagen University in Denmark and colleagues have shown that black branes can behave like solids as well. If the black brane has an electric charge, bending it converts mechanical stress into an electric field, as in piezoelectric materials. Armas hopes the results will yield further insights into quark-gluon plasma.

"This kind of black hole can be approximated by materials," Camps says. "This is new progress, and it's progress that you can formulate in terms of ordinary concepts."

Journal reference: Physical Review Letters, doi.org/j2c

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Government can help in training of foreign workers: SNEF

SINGAPORE: The Singapore National Employers Federation (SNEF) says the government can help in defraying the cost of training foreign workers.

In an interview with MediaCorp, SNEF president Stephen Lee said the federation is in discussions with various agencies to see how this can be done.

Mr Lee pointed out that the productivity of foreign workers must be raised in order for Singapore to achieve its long term productivity target of 2 to 3 per cent.

To recruit better skilled workers, the federation says a few industries are working with the authorities to implement a stricter pre-selection process where workers are tested for their skills before they arrive in Singapore.

Construction workers like Umesh Sundaram survives on less than S$300 a month. He earns about S$1,100 a month and sends most of it to his family in India.

The 25-year-old hopes he can earn more as his skills improves.

"I'd like to go for training to be more productive, so it can increase my salary," said Umesh.

The Workforce Development Agency (WDA) tells MediaCorp that only a small number of foreign workers are sent for training by their companies.

Mr Lee said foreign workers, who represent one third of the workforce, cannot be neglected.

"We must have some programmes to train foreign workers. Those who are already here, (we can) re-train them, to upgrade their skills...the more sensitive question is: who will take up the tab for this training?" he said.

"We are in discussions with various agencies to see how they can do that without putting undue burden on the government's training expenses," he added.

The government currently does not provide direct training subsidies for foreign workers.

Labour chief Lim Swee Say pointed out that employers are ultimately responsible for improving the productivity of migrant workers.

"The ownership of upgrading every worker cannot be with the government, or the tripartite partners, it has to be with the management," he said.

Observers noted that some companies hire foreign workers on short-term contracts, which reduce the incentive to send them for training.

However they pointed out that there were many reasons to train workers who stay with the company longer; HR experts believe foreign workers will be able to earn more when their productivity increases and can take on greater responsibilities.

"Cost is always a major consideration for any business and if the company has to come out with additional cost to train these foreign workers and with very minimal productivity gains, then it won't be (much of an incentive)," said Ronald Lee, managing director of PrimeStaff Management Services.

"However, if the government does come by and also support and provide finances to supplement this training, then it will be easier to incentivise the employers to provide more training," he said.

- CNA/jc

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Poll: Did you like the smoother, HFR Hobbit?

If you're one of the many, many people who saw "The Hobbit: An Unexpected Journey" over the weekend, chances are you didn't see the film exactly as the director, Peter Jackson, intended.

But if you were, please let us know whether you liked it by voting in the poll.

The Hobbit is the first major film to be released in a higher-frame-rate 3D version called HFR. Unlike traditional releases, which are shot and shown at 24-frames-per-second, the HFR Hobbit comes in at 48.

Jackson said he preferred viewers watch the HFR version if they could, although he admits it's an "experiment." Only about ten percent of the more than 4,000 theaters showing the film have an HFR screen available, and the look of the higher frame rate is controversial. You can check out our full report here.

The short story is that Thorin and Co. look smoother in HFR than you're used to seeing in traditional presentations, and whether that's a good or a bad thing depends largely on personal taste. So let us know yours, and elaborate in comments if you'd like.

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Grave Obstacle to Chinese Construction Boom

A.R. Williams

China's construction boom waits for no one, dead or alive. In the city of Taiyuan (map) that means a multistory residential complex is taking shape around a lone grave, which now sits atop a tower of mud about 30 feet (10 meters) above the building's excavated foundations.

The family of the deceased—buried there in 2004—has refused an offer of 1,000,000 yuan (about $160,000) to compensate them for the land. Chinese news reports say they can't understand why the developer chose this particular spot and have asked for an explanation. Meanwhile, the construction crew is sticking to their schedule, working toward an April 2013 completion date.

In similar situations around the country, people sometimes resist vacating their homes to make way for large-scale projects such as hotels, factories, and shopping malls. Typically, a developer will start work anyway, turning the home into what's known as a "nail house"—a single building that sticks up in the middle of a construction site like a stubborn nail in a board.

The homeowner may hang on for a time, even with the electricity and water turned off, but eventually the developer offers enough money, takes possession of the house, and tears it down. In a widely reported recent case, an elderly duck farmer and his wife refused to move from their home in the village of Xiayangzhang (map) to make way for a road. After four lanes of asphalt were laid down around the building, the owners accepted a payment of 260,000 yuan ($41,000) and a plot of land for a new house. Their old home was demolished on December 1.

(Related: "European Man Found in Ancient Chinese Tomb, Study Finds")

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Newtown Couple Vow to Live for Dead Daughter

The parents of Jessica Rekos, a 6-year-old girl who died during the massacre at Sandy Hook Elementary School in Newtown, Conn., said they are committed to keeping their daughter's memory alive despite their pain.

"We will talk about her every day, we will live for her," Krista Rekos told ABC News. "We will make sure her brother knows what an amazing person she was."

Richard and Krista Rekos say that talking about Jessica, who loved horseback riding and whom they called the CEO of their family, brings tiny moments of comfort.

CLICK HERE for full coverage of the massacre at the elementary school.

"Jessica loved writing, and she would often leave us little notes all over the house," Rekos said. "They would just say, 'I love you so much.'

"She was a ball of fire, she ruled the roost," Krista Rekos said.

When the call came Friday morning that Sandy Hook Elementary was on lockdown, Krista Rekos rushed in disbelief through the town where she and her husband were raised, a place they had always felt safe.

"I was running, and I kept thinking, 'I'm coming for you honey, I'm coming,'" she said, choking up.

CLICK HERE to read about the "hero teacher," the principal and 20 children who lost their lives.

First Sandy Hook Shooting Victims to Be Buried Watch Video

Adam Lanza: Who Was Elementary School Shooter? Watch Video

Richard Rekos said they initially had little information on what had happened.

"We had no idea at that point," he said. "We thought, OK, the reports are that one or two people may have been injured and taken to hospitals. There was still hope, that the children were hiding, there was still so much hope at that point."

The couple said that they walked around the firehouse, thinking that maybe Jessica had been taken there.

"I knew exactly what she was wearing, and I was hoping to see her little ponytail run around the corner, and her jacket and her black glittery Uggs that she had on that morning," Krista Rekos said.

Finally, around 1:15 p.m., everyone was asked to sit down, and a police officer said 20 children had been killed.

"We couldn't get a straight answer," Richard Rekos said. "There's so much panic and confusion when that announcement was made, the life was just sucked out of the room. And you know, I just point-blank found a state trooper and said, 'Are you telling me that standing here as a parent that my daughter is gone?' And he said, 'Yes.'"

The Rekoses were asked to stay at the firehouse to identify their daughter's body but, overcome with grief, they left in disbelief. The couple went home, and got into their daughter's bed, staying there until about 1 a.m., they said.

At that point there was a knock on the door and a police officer said that Jessica was dead.

"It just confirmed the nightmare, it's not real," Krista Rekos said. "It's still not real that my little girl who's so full of life and wants a horse so badly, and who was going to get cowboy boots for Christmas, isn't coming home."

The couple said the pain is just settling in. But equally strong is their commitment to keeping their daughter's memory alive.

The parents said that their 6-year old family powerhouse, with an enormous heart, will forever be their angel who left behind love notes that are still being found.

"This morning I found a little journal, and it was exactly what I needed, because it says, 'I love you so much momma, love Jessica,'" her mother said.

"It was like she was telling me she was watching us and she knows how hard this must be for us, and she wants us to know she loved us, and she knows how much she was loved."

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Zebrafish made to grow pre-hands instead of fins

PERHAPS the little fish embryo shown here is dancing a jig because it has just discovered that it has legs instead of fins. Fossils show that limbs evolved from fins, but a new study shows how it may have happened, live in the lab.

Fernando Casares of the Spanish National Research Council and his colleagues injected zebrafish with the hoxd13 gene from a mouse. The protein that the gene codes for controls the development of autopods, a precursor to hands, feet and paws.

Zebrafish naturally carry hoxd13 but produce less of the protein than tetrapods - all four-limbed vertebrates and birds - do. Casares and his colleagues hoped that by injecting extra copies of the gene into the zebrafish embryos, some of their cells would make more of the protein.

One full day later, all of those fish whose cells had taken up the gene began to develop autopods instead of fins. They carried on growing for four days but then died (Cell, DOI: 10.1016/j.devcel.2012.10.015).

"Of course, we haven't been able to grow hands," says Casares. He speculates that hundreds of millions of years ago, the ancestors of tetrapods began expressing more hoxd13 for some reason and that this could have allowed them to evolve autopods.

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

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Football: Corinthians clinch Club World Cup title

YOKOHAMA, Japan: Brazilian giants Corinthians won the Club World Cup in Japan on Sunday, overcoming European champions Chelsea 1-0 in a closely-fought encounter.

Striker Paolo Guerrero got the goal as the Sao Paulo club secured their second intercontinental title -- they won the 2000 FIFA Club World Championship -- and became the first side from outside Europe to win the title since 2006.

"We played a high quality match," a delighted Corinthians coach Tite said afterwards.

"Everything went well. Each player performed their own role and were able to do well in their position. I'm very happy."

But interim Chelsea boss Rafael Benitez felt his team were unlucky to lose, ruing several missed chances.

"We knew it would be a tough game against a good team. I think they had one (clear cut) chance and they scored and we didn't take our chances. That was the difference."

Benitez made three changes to the team that thrashed Mexican side Monterrey 3-1 in the semi-final -- replacing Oscar, John Obi Mikel and Cesar Azpilicueta with Frank Lampard, Ramires and Victor Moses.

Tite changed just one player from the side that scraped to a 1-0 last-four win over Egypt's Al Ahly, bringing in Jorge Henrique for Douglas.

The match at the almost-full 68,000-capacity International Stadium in Yokohama was frenetic right from the first whistle as play swung from end to end.

Chelsea came closest to taking the lead after eight minutes when Corinthians goalkeeper Cassio fumbled a Gary Cahill effort from a corner, before gathering the ball just short of the goal-line as Victor Moses looked to pounce.

On 25 minutes, the referee waved away a penalty appeal by Corinthians when centre-forward Guerrero went down softly under a challenge by Cahill.

Emerson should have scored three minutes later after Cahill let the ball slip under his foot. But the Corinthians forward blazed his shot over the bar from the edge of the penalty box with just Petr Cech to beat.

Guerrero then had a shot blocked shortly afterwards before striker Fernando Torres was similarly denied at the other end.

The Spaniard should have done better on 37 minutes however, expertly controlling a long-range pass from Lampard that split the Corinthians' defence. But a weak shot at Cassio meant the Brazilians breathed a sigh of relief.

Moses did better two minutes later, cutting in from the left and curling a shot that Cassio did well to tip round his left-hand post.

The Corinthians goalkeeper -- later named player of the tournament -- was proving tough to beat, holding onto a long-range shot from Juan Mata shortly afterwards, and the teams entered the break goalless.

The second half started as quick as the first, with Eden Hazard causing problems for the Corinthians defence before midfielder Paulinho gave Cech a fright with a shot that narrowly went wide on 64 minutes.

There was finally a breakthrough five minutes later when Guerrero headed in from close range after Danilo's shot was blocked.

Benitez brought Oscar on for Moses almost straightaway. But it was Torres who missed the best chance to equalise when he shot straight at the goalkeeper from the edge of the six-yard box with only four minutes to go.

Cahill was sent off shortly afterwards, believed to be for lashing out at Emerson, but Chelsea managed one last chance in injury time.

Torres headed the ball in the net, however it was ruled offside and Corinthians held on.

CONCACAF champions Monterrey took third place earlier Sunday, defeating Al Ahly 2-0 through goals from Jesus Corona and Cesar Delgado.

- AFP/fa

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NASA takes on 'Gangnam Style' and wins

Psy's got nothing on this.

(Credit:
Screenshot by Christopher MacManus/CNET)

For those of you with a dirty wit, please lend me some patience before you fly off the rails when I say that a group of NASA interns made a "Gangnam Style" parody named "NASA Johnson Style."

Wondering what's with the song name? Well, NASA's Lyndon B. Johnson Space Center houses educational programs for interns and students aspiring to progress further into the field of space science. The eclectic group of youths created a parody video that plays off Psy's "Gangam Style" in a geeky way by amusingly attempting to "inform the public about the amazing work going on at NASA and the Johnson Space Center," says a related video description.

Several space visitors make appearances in the nearly four-minute long parody, including NASA astronauts Tracy Caldwell Dyson, Mike Massimino and Clay Anderson -- all three participated in space missions at least two times (or more).

What lyrics in the Gangnam parody made you chuckle? I couldn't help but snicker after hearing, "Orbiting earth, international space station, where we work and live in space with a crew from several nations -- Got Japanese, and Russians, that European charm, throw them up, like the Canada Arm."

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Space Pictures This Week: Frosty Mars, Mini Nile, More

Photograph by Mike Theiss, National Geographic

The aurora borealis, also known as the northern lights, illuminates the Arctic sky in a recent picture by National Geographic photographer Mike Theiss.

A storm chaser by trade, Theiss is in the Arctic Circle on an expedition to photograph auroras, which result from collisions between charged particles released from the sun's atmosphere and gaseous particles in Earth's atmosphere.

After one particularly amazing show, he wrote on YouTube, "The lights were dancing, rolling, and twisting, and at times looked like they were close enough to touch!" (Watch his time-lapse video of the northern lights.)

Published December 14, 2012

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Conn. Community Mourns Victims of Massacre

President Obama will visit Newtown, Conn. today to meet with the grieving families and thank the first responders from Friday's school shooting, as the community begins the long process of healing.

The pictures of the young victims killed at Sandy Hook Elementary School emerged Saturday, along with a remarkable story of survival.

Twenty children and six adults were killed at the school when shooter Adam Lanza went on a shooting rampage.

Later this evening, the community will gather for an interfaith vigil, where the president is scheduled to address mourners, some from out of state who came to offer help and others, who knew the young victims or their families.

Addressing the nation on Friday, Obama mourned the children who "had their entire lives ahead of them -- birthdays, graduations, weddings, kids of their own."

Story of Survival

READ: Complete List of Sandy Hook Victims

The lone survivor of her class tricked the gunman by playing dead, the girl's pastor told ABC News, before running out of the school covered in the blood of her classmates.

"She ran out of the school building covered from head to toe with blood and the first thing she said to her mom was, 'Mommy, I'm OK but all my friends are dead,'" said Pastor Jim Solomon. "Somehow in that moment, by God's grace, [she] was able to act as she was already deceased."

Five first graders in another class were also killed, along with six staff members.

Connecticut Shooting: Churches Services Honor Victims Watch Video

Connecticut Shooting: Pastor Explains How Girl Played Dead to Survive Watch Video

"The mom told me, and I thought this was very insightful, that she was suffering from what she felt was survivor's guilt because so many of her friends no longer have their children but she has hers," the pastor said.

Click Here for full coverage of the tragedy at the elementary school.

Remembering the Victims of the Sandy Hook Shooting

There was Emilie Parker, the little girl with the blond hair and bright blue eyes, who would have been one of the first to comfort her classmates at Sandy Hook Elementary School, had a gunman's bullets not claimed her life, her father said.

Noah Pozner and his twin sister had just celebrated their sixth birthdays. His twin sister survived the shooting, but Noah did not.

Six-year-old Jesse Lewis went to school on Friday, excited to make gingerbread houses. He died, along with his teacher, Victoria Soto, 27, whose family said was shielding some of her first graders when she was hit by bullets.

As the community mourns and families bear the pain of planning 26 funerals before Christmas, school board members hope to get students back to a familiar routine.

"Well, all the mental health experts we've talked to...tell us that the best thing we can do is to get back to normal operations as soon as possible," said Bill Hart, a member of the Newtown Board of Education.

"We know some teachers won't be prepared to come back, he said. "We are going to be prepared with substitutes. We've got counseling for all. We're prepared to do whatever we have to do to help all of our community."

READ: Police Seek Motive in Shooting

Students who attend Sandy Hook Elementary School will be moved to another location that has yet to be announced, Hart said. He said officials did not yet know what would become of the building that was turned into a slaughterhouse on Friday.

"I think trying to understand what we are going to do with that is a long process and we're not in any way prepared to make those decisions now," he said.

ABC News' Lara Spencer and Dan Harris contributed reporting.

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