Japanese Economy Contracts and Remains in Recession

TOKYO (AP) — Japan’s economy remained mired in recession late last year, shrinking 0.4 percent in annualized terms for the third straight quarter of contraction on feeble demand at home and overseas.

The government reported Thursday that growth for all of 2012 was 1.9 percent, after a 0.6 percent contraction in 2011 and a 4.7 percent increase in 2010 and a 5.5 percent contraction in 2009.

The figures were worse than expected, as many analysts had forecast the economy may have emerged from recession late last year as the Japanese yen weakened against other major currencies, giving a boost to Japanese export manufacturers.

Prime Minister Shinzo Abe, who took office in late December, is championing aggressive spending and monetary stimulus to help get growth back on track. He has lobbied the central bank to set an inflation target of 2 percent, aimed at breaking out of Japan’s long bout of deflation, or falling prices, that he says are inhibiting corporate investment and growth.

But the Bank of Japan was not expected to announce any major new initiatives from a policy meeting on Thursday. The current central bank governor, Masaaki Shirakawa, is due to leave office on March 19, and Mr. Abe is expected to appoint as his successor an expert who favors his more activist approach to monetary policy.

Last year began on an upbeat note with annual growth in the first quarter at 6 percent as strong government spending on reconstruction from the March 2011 tsunami disaster helped spur demand. But the economy contracted in the second quarter and deteriorated further as frictions with China over a territorial dispute hurt exports to one of Japan’s largest overseas markets.

Despite the dismal data for last year, many in Japan expect at least a temporary bump to growth from higher government spending on public works and other programs. An index measuring consumer confidence, released this week, jumped to its highest level since 2007, the biggest increase in a single month.

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Obama issues order to bolster cyber-defenses

WASHINGTON — President Obama issued an executive order Tuesday that seeks to shore up the nation's cyber-defenses by improving how classified information is shared between the government and the owners and operators of crucial infrastructure, including electric utilities, dams and mass transit.

The long-expected order, which Obama announced in his State of the Union speech, is a stopgap measure that follows Congress' failure last year to pass legislation to create comprehensive standards for the private sector to help thwart digital attacks. Many Republicans and business leaders had decried that bill as unnecessary regulation, while civil liberties groups warned of privacy concerns.

"We know hackers steal people's identities and infiltrate private email," Obama said. "We know foreign countries and companies swipe our corporate secrets. Now our enemies are also seeking the ability to sabotage our power grid, our financial institutions and our air-traffic control systems. We cannot look back years from now and wonder why we did nothing in the face of real threats to our security and our economy."

The executive order comes amid growing concern about foreign-based theft of government and other sensitive computer data and sophisticated digital attacks capable of causing physical damage to national infrastructure, from water treatment plants to traffic systems.

A senior administration official, who spoke on condition of anonymity to brief reporters before the announcement, called cyber-attacks "a grave threat to the United States that requires a new approach based on public-private partnerships."

He said Obama decided to act because the risk remained high and congressional action was uncertain. The president will continue to push for new legislation, the official said.

The order includes two main features. One will expand a program that allows the government to share classified cyber-threat information, including malware signatures, with private companies that pass a security clearance process. The effort now is mostly limited to Internet companies and defense contractors, but it would add crucial infrastructure companies.

"The government provides classified information about cyber-threats to Internet service providers and cyber-security companies … they use that to protect their customers," a second senior administration official said. "We're going to expand the pool of companies that are able to benefit from these cyber-security services."

The order also requires the National Institute of Standards and Technology, a federal agency, to help write voluntary standards so companies can reinforce their network defenses to detect and repel cyber-attacks.

The U.S. intelligence community is preparing a National Intelligence Estimate on cyber-attacks aimed at the United States. Officials say the classified document will highlight the role of Chinese government entities in stealing American intellectual property through hacking, and will outline other cyber-threats overseas.

U.S. officials believe Iran is behind recent cyber-attacks against American banks, for example, in retaliation for the United States' suspected role in a cyber-attack on Iran aimed at slowing its nuclear program. Russia is also active in cyber-espionage, U.S. officials say.

Most American infrastructure is controlled by computer networks connected to the Internet, and some of those networks are vulnerable to dangerous hacking attacks, experts say. A cyber-attack on the electrical power grid, for example, could have severe consequences.

"We're talking about a subset of companies that, if something really bad happens to them in cyberspace, something really bad happens to an awful lot of people," a third administration official said.

Leon E. Panetta, the outgoing secretary of Defense, warned in a speech Feb. 9 that "it is very possible the next Pearl Harbor could be a cyber-attack. That would have one hell of an impact on the United States of America. That is something we have to worry about and protect against."

ken.dilanian@latimes.com

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Executive Order Aims to Facilitate Sharing of Information on Threats

President Barack Obama signed an executive order on Tuesday designed to make it easier to disseminate classified information on threats against critical infrastructure systems and to lay the groundwork for obtaining information from the private sector that would help the government protect critical infrastructures in the U.S.

The order, which runs eight pages (.pdf), directs the Attorney General’s office, the office of Homeland Security Secretary Janet Napolitano and the Director of National Intelligence to issue instructions to their agencies that would “ensure the timely production of unclassified reports of cyberthreats to the U.S. homeland that identify a specific targeted entity” to Congress and also develop a program for providing “classified cyber threat and technical information from the Government to eligible critical infrastructure companies or commercial service providers that offer security services to critical infrastructure,” according to the document.

To that end, the order also calls for the government to expedite security clearances to appropriate personnel employed by critical infrastructure owners and operators, so that they can receive information necessary to protect their systems.

“It is the policy of the United States Government to increase the volume, timeliness, and quality of cyber threat information shared with U.S. private sector entities so that these entities may better protect and defend themselves against cyber threats,” the order states.

The order, published in conjunction with a new Presidential Directive on cybersecurity (.pdf), follows numerous failed attempts by Capitol Hill to pass controversial cybersecurity legislation that would have given private companies legal immunity to share information with the government.

The order still allows the private sector to share information with the government, but references established safeguards — such as the Fair Information Practice Principles — for protecting the privacy of customers whose information is shared and also carries some built-in limitations for the kind of information that companies will likely share. The order requires DHS’s chief privacy officer and its officer for civil rights and civil liberties to assess the privacy and civil liberties risks of the programs.

Civil liberties advocates praised the executive order in this regard, but said they will withhold judgment until they see how the information-sharing gets played out in practice.

“A lot of what this shows is that the president can do a lot without cybersecurity legislation,” said Mark Jaycox, policy analyst and legislative assistant for the Electronic Frontier Foundation, who points out that the executive order satisfies the need for information sharing without the privacy problems that existed under legislative proposals where loopholes would have allowed companies to dump large amounts of data on the government in an effort to obtain legal immunities. Without those immunities, companies will by nature be more circumspect about what they provide the government, thus limiting what they hand over Jaycox said.

“An [executive order] can’t grant broad immunities to companies … so it will tighten the information that can be shared, and the government won’t be on the receiving end of tons of tons of information,” Jaycox said. “Companies will be more mindful about what they share.”

Although the order comes after a number of failed attempts by Congress last year to pass cybersecurity legislation, the White House has indicated that it doesn’t see the executive order as a substitute for legislation, and the order even indicates that further legislation is not ruled out in addressing the critical infrastructure issue.

Not everyone is happy with the order, however. Sen. Charles E. Grassley (R-Iowa) told the Washington Post that the president was out of line in bypassing legislation.

“It is a very dangerous road he’s going down contrary to the spirit of the Constitution,” Sen. Grassley said. “Just because Congress doesn’t act doesn’t mean the president has a right to act.”

The Cyber Intelligence Sharing and Protection Act, which passed the House last year but failed to gain support in the Senate, was one piece of legislation that garnered a lot of criticism from civil liberties groups who were happy to see it fail. EFF and others criticized the bill for failing to provide enough safeguards to protect the digital privacy of customers when private entities such as ISPs and others shared threat information with the government.

CISPA would have allowed companies to share sensitive and personal data with the National Security Agency and other government agencies without requiring companies to make reasonable efforts to protect their customers’ privacy. The bill also failed to adequately define how the government could use the data, saying only that it would be used for “national security” purposes.

House Intelligence Committee Chairman Mike Rogers (R-Michigan) and Ranking Member C.A. Dutch Ruppersberger (D-Maryland) plan on reintroducing CISPA this week.

Critical infrastructure sectors include chemical, communications, dams, critical manufacturing, emergency services, food and agriculture, energy, defense industrial base, healthcare and public health, government facilities, water and wastewater and transportation, among a few others.

DHS currently oversees the National Cybersecurity and Communications Integration Center, a 24-hour watch center tied in with other federal watch centers that parses threat information that comes in to the center and monitors government civilian networks for signs of cyber threats. DHS, along with the Department of Energy, also operates the Industrial Control System – Computer Emergency Readiness Team, which helps assess industrial control systems for vulnerabilities and maintains a flyaway team to assist critical infrastructure owners in the private sector with responding to suspected attacks on their networks.

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Well: Straining to Hear and Fend Off Dementia

At a party the other night, a fund-raiser for a literary magazine, I found myself in conversation with a well-known author whose work I greatly admire. I use the term “conversation” loosely. I couldn’t hear a word he said. But worse, the effort I was making to hear was using up so much brain power that I completely forgot the titles of his books.

A senior moment? Maybe. (I’m 65.) But for me, it’s complicated by the fact that I have severe hearing loss, only somewhat eased by a hearing aid and cochlear implant.

Dr. Frank Lin, an otolaryngologist and epidemiologist at Johns Hopkins School of Medicine, describes this phenomenon as “cognitive load.” Cognitive overload is the way it feels. Essentially, the brain is so preoccupied with translating the sounds into words that it seems to have no processing power left to search through the storerooms of memory for a response.

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Katherine Bouton speaks about her own experience with hearing loss.

A transcript of this interview can be found here.

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Over the past few years, Dr. Lin has delivered unwelcome news to those of us with hearing loss. His work looks “at the interface of hearing loss, gerontology and public health,” as he writes on his Web site. The most significant issue is the relation between hearing loss and dementia.

In a 2011 paper in The Archives of Neurology, Dr. Lin and colleagues found a strong association between the two. The researchers looked at 639 subjects, ranging in age at the beginning of the study from 36 to 90 (with the majority between 60 and 80). The subjects were part of the Baltimore Longitudinal Study of Aging. None had cognitive impairment at the beginning of the study, which followed subjects for 18 years; some had hearing loss.

“Compared to individuals with normal hearing, those individuals with a mild, moderate, and severe hearing loss, respectively, had a 2-, 3- and 5-fold increased risk of developing dementia over the course of the study,” Dr. Lin wrote in an e-mail summarizing the results. The worse the hearing loss, the greater the risk of developing dementia. The correlation remained true even when age, diabetes and hypertension — other conditions associated with dementia — were ruled out.

In an interview, Dr. Lin discussed some possible explanations for the association. The first is social isolation, which may come with hearing loss, a known risk factor for dementia. Another possibility is cognitive load, and a third is some pathological process that causes both hearing loss and dementia.

In a study last month, Dr. Lin and colleagues looked at 1,984 older adults beginning in 1997-8, again using a well-established database. Their findings reinforced those of the 2011 study, but also found that those with hearing loss had a “30 to 40 percent faster rate of loss of thinking and memory abilities” over a six-year period compared with people with normal hearing. Again, the worse the hearing loss, the worse the rate of cognitive decline.

Both studies also found, somewhat surprisingly, that hearing aids were “not significantly associated with lower risk” for cognitive impairment. But self-reporting of hearing-aid use is unreliable, and Dr. Lin’s next study will focus specifically on the way hearing aids are used: for how long, how frequently, how well they have been fitted, what kind of counseling the user received, what other technologies they used to supplement hearing-aid use.

What about the notion of a common pathological process? In a recent paper in the journal Neurology, John Gallacher and colleagues at Cardiff University suggested the possibility of a genetic or environmental factor that could be causing both hearing loss and dementia — and perhaps not in that order. In a phenomenon called reverse causation, a degenerative pathology that leads to early dementia might prove to be a cause of hearing loss.

The work of John T. Cacioppo, director of the Social Neuroscience Laboratory at the University of Chicago, also offers a clue to a pathological link. His multidisciplinary studies on isolation have shown that perceived isolation, or loneliness, is “a more important predictor of a variety of adverse health outcomes than is objective social isolation.” Those with hearing loss, who may sit through a dinner party and not hear a word, frequently experience perceived isolation.

Other research, including the Framingham Heart Study, has found an association between hearing loss and another unexpected condition: cardiovascular disease. Again, the evidence suggests a common pathological cause. Dr. David R. Friedland, a professor of otolaryngology at the Medical College of Wisconsin in Milwaukee, hypothesized in a 2009 paper delivered at a conference that low-frequency loss could be an early indication that a patient has vascular problems: the inner ear is “so sensitive to blood flow” that any vascular abnormalities “could be noted earlier here than in other parts of the body.”

A common pathological cause might help explain why hearing aids do not seem to reduce the risk of dementia. But those of us with hearing loss hope that is not the case; common sense suggests that if you don’t have to work so hard to hear, you have greater cognitive power to listen and understand — and remember. And the sense of perceived isolation, another risk for dementia, is reduced.

A critical factor may be the way hearing aids are used. A user must practice to maximize their effectiveness and they may need reprogramming by an audiologist. Additional assistive technologies like looping and FM systems may also be required. And people with progressive hearing loss may need new aids every few years.

Increasingly, people buy hearing aids online or from big-box stores like Costco, making it hard for the user to follow up. In the first year I had hearing aids, I saw my audiologist initially every two weeks for reprocessing and then every three months.

In one study, Dr. Lin and his colleague Wade Chien found that only one in seven adults who could benefit from hearing aids used them. One deterrent is cost ($2,000 to $6,000 per ear), seldom covered by insurance. Another is the stigma of old age.

Hearing loss is a natural part of aging. But for most people with hearing loss, according to the National Institute on Deafness and Other Communication Disorders, the condition begins long before they get old. Almost two-thirds of men with hearing loss began to lose their hearing before age 44. My hearing loss began when I was 30.

Forty-eight million Americans suffer from some degree of hearing loss. If it can be proved in a clinical trial that hearing aids help delay or offset dementia, the benefits would be immeasurable.

“Could we do something to reduce cognitive decline and delay the onset of dementia?” he asked. “It’s hugely important, because by 2050, 1 in 30 Americans will have dementia.

“If we could delay the onset by even one year, the prevalence of dementia drops by 15 percent down the road. You’re talking about billions of dollars in health care savings.”

Should studies establish definitively that correcting hearing loss decreases the potential for early-onset dementia, we might finally overcome the stigma of hearing loss. Get your hearing tested, get it corrected, and enjoy a longer cognitively active life. Establishing the dangers of uncorrected hearing might even convince private insurers and Medicare that covering the cost of hearing aids is a small price to pay to offset the cost of dementia.

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Katherine Bouton is the author of the new book, “Shouting Won’t Help: Why I — and 50 Million Other Americans — Can’t Hear You,” from which this essay is adapted.

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This post has been revised to reflect the following correction:

Correction: February 12, 2013

An earlier version of this article misstated the location of the Medical College of Wisconsin. It is in Milwaukee, not Madison.

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Media Decoder Blog: Comcast Buys Rest of NBC in Early Sale

8:53 p.m. | Updated Comcast gave NBCUniversal a $16.7 billion vote of confidence on Tuesday, agreeing to pay that sum to acquire General Electric’s remaining 49 percent stake in the entertainment company. The deal accelerated a sales process that was expected to take several more years.

Brian Roberts, chief executive of Comcast, said the acquisition, which will be completed by the end of March, underscored a commitment to NBCUniversal and its highly profitable cable channels, expanding theme parks and the resurgent NBC broadcast network.

“We always thought it was a strong possibility that we’d some day own 100 percent,” Mr. Roberts said in a telephone interview.

He added that the rapidly changing television business and the growing necessity of owning content as well as the delivery systems sped up the decision. “It’s been a very smooth couple of years, and the content continues to get more valuable with new revenue streams,” he said.

Comcast also said that NBCUniversal would buy the NBC studios and offices at 30 Rockefeller Center, as well as the CNBC headquarters in Englewood Cliffs, N.J. Those transactions will cost about $1.4 billion.

Mr. Roberts called the 30 Rockefeller Center offices “iconic” and said it would have been “expensive to replicate” studios elsewhere for the “Today” show, “Saturday Night Live,” “Late Night With Jimmy Fallon” and other programs produced there. “We’re proud to be associated with it,” Mr. Roberts said of the building.

With the office space comes naming rights for the building, according to a General Electric spokeswoman. So it is possible that one of New York’s most famous landmarks, with its giant red G.E. sign, could soon be displaying a Comcast sign instead.

When asked about a possible logo swap on the building, owned by Tishman Speyer, Mr. Roberts told CNBC, that is “not something we’re focused on talking about today.” Nevertheless, the sale was visible in a prominent way Tuesday night: the G.E. letters, which have adorned the top of 30 Rock for several decades, were no longer illuminated.

Comcast, with a conservative, low-profile culture, had clashed with the G.E. approach, according to employees and executives in television. Comcast moved NBCUniversal’s executive offices from the 52nd floor to the 51st floor — less opulent space that features smaller executive offices and a cozy communal coffee room instead of General Electric’s lavish executive dining room.

Comcast took control of NBCUniversal in early 2011 by acquiring 51 percent of the media company from General Electric. The structure of the deal gave Comcast the option of buying out G.E. in a three-and-a-half to seven-year time frame. In part because of the clash in corporate cultures, television executives said, both sides were eager to accelerate the sale.

Price was also a factor. Mr. Roberts said he believed the stake would have cost more had Comcast waited. Also, he pointed to the company’s strong fourth-quarter earnings to be released late Tuesday afternoon, which put it in a strong position to complete the sale.

Comcast reported a near record-breaking year with $20 billion in operating cash flow in the fiscal year 2012. In the three months that ended Dec. 31, Comcast’s cash flow increased 7.3 percent to $5.3 billion. Revenue at NBCUniversal grew 4.8 percent to $6 billion.

“We’ve had two years to make the transition and to make the investments that we believe will continue to take off,” Mr. Roberts said.

The transactions with General Electric will be largely financed with $11.4 billion of cash on hand, $4 billion of subsidiary senior unsecured notes to be issued to G.E. and a $2 billion in borrowings.

Even with the investment in NBCUniversal, Comcast said it would increase its dividend by 20 percent to 78 cents a share and buy back $2 billion in stock in 2013.

When it acquired the 51 percent stake two years ago, Comcast committed to paying about $6.5 billion in cash and contributed all of its cable channels, including E! and some regional sports networks, to the newly established NBCUniversal joint venture. Those channels were valued at $7.25 billion.

The transaction made Comcast, the single biggest cable provider in the United States, one of the biggest owners of cable channels, too. NBCUniversal operates the NBC broadcast network, 10 local NBC stations, USA, Bravo, Syfy, E!, MSNBC, CNBC, the NBC Sports Network, Telemundo, Universal Pictures, Universal Studios, and a long list of other media brands.

Mr. Roberts and Michael J. Angelakis, vice chairman and chief financial officer for the Comcast Corporation, led the negotiations that began last year with Jeffrey R. Immelt, chief executive of General Electric, and Keith Sharon, the company’s chief financial officer. JPMorgan Chase, Goldman Sachs, Centerview Partners and CBRE provided financial and strategic advice.

The sale ends a long relationship between General Electric and NBC that goes back before the founding days of television. In 1926, the Radio Corporation of America created the NBC network. General Electric owned R.C.A. until 1930. It regained control of R.C.A., including NBC, in 1986, in a deal worth $6.4 billion at the time.

In a slide show on the company’s “GE Reports” Web site titled “It’s a Wrap: GE, NBC Part Ways, Together They’ve Changed History,” G.E. said the deal with Comcast “caps a historic, centurylong journey for the two companies that gave birth to modern home entertainment.”

Mr. Immelt has said that NBCUniversal did not mesh with G.E.’s core industrial businesses. That became even more apparent when the company became a minority stakeholder with no control over how the business was run, according to a person briefed on G.E.’s thinking who could not discuss private conversations publicly.

“By adding significant new capital to our balanced capital allocation plan, we can accelerate our share buyback plans while investing in growth in our core businesses,” Mr. Immelt said in a statement. He added: “For nearly 30 years, NBC — and later NBCUniversal — has been a great business for G.E. and our investors.”

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Mahony voting for a new pope rankles some Catholics

Nearly two weeks ago, Los Angeles Archbishop Jose Gomez announced he had removed Cardinal Roger Mahony from all public duties amid revelations that he plotted to conceal child molestation by priests from law enforcement.

But Mahony on Monday found himself back at the center of church business, as one of 117 cardinals who will elect a successor to Pope Benedict XVI.

Mahony was quick to weigh in on the papal news — posting a statement on his online blog at 8:38 a.m., two hours before the archdiocese announced that Gomez would issue his own remarks at the midday Mass at the downtown Cathedral of Our Lady of the Angels.

In the posting, Mahony called Benedict an "extraordinary" successor to St. Peter and that he intended to participate in choosing the next pontiff.

"I look forward to traveling to Rome soon to help thank Pope Benedict XVI for his gifted service to the Church, and to participate in the Conclave to elect his successor," Mahony wrote.

Benedict's unexpected decision to step down created an awkward situation in the Los Angeles Archdiocese, which is reeling over newly released documents showing how church leaders handled the abuse cases. Documents show that Mahony and Bishop Thomas Curry worked to shield abusers from police. Both have since issued detailed apologies.

Gomez wrote in a letter to parishioners last month that the priest files were "brutal and painful reading. The behavior described in these files is terribly sad and evil. There is no excuse, no explaining away what happened to these children."

Gomez wrote that Mahony, his predecessor as leader of the archdiocese, "has expressed his sorrow for his failure to fully protect young people entrusted to his care. Effective immediately, I have informed Cardinal Mahony that he will no longer have any administrative or public duties." A church spokesman later clarified that Mahony remained a priest "in good standing" and that he maintained all his powers as a cardinal.

Mahony is one of 11 U.S. cardinals who will vote for the next pope.

Father Thomas Rausch of Loyola Marymount University said Mahony has no choice in the matter: Church law requires him to vote, along with all cardinals under age 80, he said.

"It is a sacred responsibility of every cardinal of the church who is able to attend the conclave to vote," said Tod Tamberg, archdiocese spokesman.

Still, Mahony's role in selecting a pope drew mixed reactions among Catholics in Southern California.

Manuel Vega, a retired Oxnard police officer who as an altar boy was molested from the age of 12 to 15 by Father Fidencio Silva, said Mahony would bring shame on the Catholic Church by going to Rome to vote.

"Mahony is going without clean hands. His hands are dirty ... from covering up years of sexual abuse. How can he be part of the conclave?" Vega asked.

Other Catholics said they were pleased that Mahony would be voting. They said they hoped that he would bring a more liberal and American point of view to the conclave, which will be dominated by the conservative cardinals whom Popes John Paul II and Benedict XVI have appointed over the last three decades.

Jane Argento, a parishioner at Holy Family Church in South Pasadena, said she was livid at Mahony when she read about his actions after the archdiocese's release of sex abuse documents. But she said the relatively liberal Mahony reflected her own Catholic convictions about larger roles for women in the church, among other issues. Mahony, she said, was the architect of a pastoral associate program in Los Angeles that had trained several women to run parishes, including her own.

"I'm relieved that Mahony is going," Argento said. "Frankly, it's one more vote for a more progressive church."

Larry Loughlin, 77, a parishioner and social worker, said it was reasonable that Mahony vote, given church rules, and that he was not the only cardinal accused of failing to remove predatory priests from churches and schools. Others include Cardinal Justin Regali, who was accused of ignoring evidence of sex abuse, including rape, in the Philadelphia archdiocese before retiring in 2011.

"Mahony is not the only cardinal to be accused of protecting priests, it is a worldwide crisis," Loughlin said.

Parishioners who attended Monday's midday Mass at the downtown cathedral said they were saddened by news of Benedict's resignation but hailed it as a chance to renew a church still suffering from the repercussions of the abuse scandals. The scandals also appeared to be on the mind of Gomez, who celebrated the Mass and called for prayer "for anyone who has been hurt by a member of the church" and for "the healing for wounds and restoration of trust."

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Why Thousands of Spiders Are Crawling in the Skies Over Brazil

Last week, spiders descended in droves upon a town in southern Brazil — literally.

When 20-year-old web designer Erick Reis left a friend’s house on Sunday, he saw what looked like thousands of spiders overhead, reported G1, a Brazilian news site, on Feb. 8. The large, sturdy spiders were hanging from power lines and poles, and crawling around on a vast network of silk strands spun over the town of Santo Antonio da Platina.

Reis did what many of us might do: He pulled out his camera and shot a video of spiders seemingly falling from the sky.

As creeptastic is it may be, “The phenomenon observed is not really surprising,” said Leticia Aviles, who studies social spiders at the University of British Columbia. “Either social or colonial spiders may occur in large aggregations, as the one shown in the video.” The reason, she and others say, is simple: This is how they hunt.

An early report suggested the swarming spiders were Anelosimus eximius, a social species of spider that weaves communal webs, lives together as adults, and shares childcare duties.

However, it appears that initial assessment may be wrong. The spiders in the video are more likely a species of colonial spider that aggregates individual webs and lives in groups only temporarily, dispersing before reproducing, Aviles said.

“The spiders I saw in the video are not Anelosimus eximius,” said Deborah Smith, an entomologist at the University of Kansas who specializes in social spiders. She notes that A. eximius is a bit smaller than the arachnids Reis filmed, and may not live that far south. “The spiders in the video are very large and robust,” she said. “It might be worth looking at Parawixia bistriata, a large, group-living orb weaver, to see if that one fits the bill.”

Arachnologist George Uetz agrees. “This is definitely not Anelosimus eximius,” said Uetz, who studies spiders at the University of Cincinnati. He notes that the spiders appear to be spread out on a colonial network of individual orb webs (rather than building a communal nest) and resemble big, orb-weaving spiders — perhaps Parawixia bistriata. “This colony is quite large,” he said, noting that the spiders aren’t actually raining down. “The web is fixed, although it is very fine and mostly invisible,” he said.

Cornell University arachnologist Linda Rayor and Aviles also agree that what’s probably being filmed is a massive P. bistriata colony. That species lives in South American savannas and spins colonial webs. A bit of good news is that their venom is not believed to be harmful to humans, Uetz said.

If this is Parawixia, or a similar species, there’s a reason the spiders may have appeared to come out of nowhere. “At night, they all collect in a colonial retreat, probably out of sight in a tree,” Uetz said. ”Then they build the colonial framework early in the day, and build individual webs upon it. They sit on these webs and capture prey.”

Whether the spiders are setting up camp or dispersing is an open question. It’s possible that Reis caught the conglomerate just as they had moved in to a new home — in which case he’ll see spiders in the sky whenever he visits his friends. At least for as long as insects are plentiful and the neighborhood is safe from birds, or until it’s time to reproduce. P. bistriata colonies dissolve before the spiders make more spiders, Aviles said. When they are clumped together, the groups tend to comprise single families.

“I suppose those can be quite large,” Aviles said. “Or, in some cases, multiple families may remain aggregated, giving rise to a colony as huge as the one shown in the video.”

It’s also possible the spiders were caught in the act of dispersing, and that the massive web overhead is temporary, though that’s more likely if the spiders are, in fact, Anelosimus eximius. An easy to make a determine which species they are is to look for the presence of an orb web, which would point toward Parawixia, Aviles said. Or better yet, snap a close-up photo of one of the spiders. Any volunteers?

Video: Acoisacoisada1/YouTube

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Bloomberg Lauds Companies for Cutting Salt Content

Mayor Michael R. Bloomberg, in the midst of a long-running campaign to change the eating habits of New Yorkers and consumers across the country, declared a victory against salt on Monday, as 21 companies, from Kraft and Goya to FreshDirect, said they had met the first stage in reductions in salt content in foods.

After focusing on reducing trans fats and smoking, Mr. Bloomberg turned his attention to salt in 2010, announcing that about 30 companies had signed up to reduce salt in foods by 25 percent within five years, as a way of lowering consumers’ blood pressure and saving lives lost to heart attack and stroke.

“These companies have a huge presence on our shelves and in our diets,” Mr. Bloomberg said at a news conference at City Hall as he announced the results, surrounded by a half-dozen executives of food companies.

The first stage focused on the low-hanging fruit — salsa, dips, bacon, ketchup, barbecue sauce, cold cuts, processed cheese, salad dressing, canned beans and pizza — foods whose salt content is so high that reducing it up to a point probably would not be noticed by many consumers.

Mr. Bloomberg called them “some of America’s most beloved and iconic foods,” suggesting that the cuts might have a disproportionately salutary effect. But Dr. Thomas A. Farley, the city’s health commissioner, said he did not know how much salt the results so far had removed from the average person’s diet.

One side effect of the salt reduction drive is that food companies are looking for salt substitutes to make food taste better.

The main way to do that is to add potassium chloride instead of sodium chloride, said Russ Moroz, vice president for research at Kraft Foods. But because potassium tends to have a bitter, mineral taste, other ingredients have to be added. He said these were proprietary secrets, and he declined to name them.

Potassium is good, Dr. Farley said, because it lowers blood pressure and most people do not get enough of it. It is removed from fruits and vegetable during processing, he said. Mr. Bloomberg said he thought fears of additives were overdone.

But a salt industry scientist said Monday that too much potassium could be bad for the kidneys, and that the “cocktail of chemical constituents” added to balance the bitterness and enhance the salty taste could present unknown risks, as those ingredients were undisclosed.

“They do it with one eye on the lab and the other eye on the label,” said Morton Satin, vice president for science and research at the Salt Institute, a trade association. “They make sure it’s below the level that the F.D.A. requires for it to be on the label.”

Mr. Satin said that the link between high blood pressure and salt was just “a theory,” and that reducing salt too much could have harmful effects, like iodine deficiency in children, a cause of mental retardation, and diabetes.

Some companies said reducing salt proved to be a popular marketing tool. Goya reported that it had reduced salt in its regular canned beans by 5 or 6 percent, without any drop in sales. “We tasted them, and you really wouldn’t notice the difference,” Joseph Perez, senior vice president of Goya Foods, said Monday.

Mr. Bloomberg said it might surprise many people to know that bread and rolls were the “biggest contributor” to salt in the diet. Eating a muffin, he said, could be worse than eating a small bag of Lays potato chips.

Bread makers are hard to spot on the list of companies that have pledged to reduce salt, perhaps, Mr. Satin said, because it is more difficult to make bread without salt. However, some companies, like Au Bon Pain, have reduced salt in some baked goods.

On an irreverent note, Mr. Bloomberg said that he loved Subway sandwiches and would eat his favorite, the Italian B.M.T. — it includes salami, pepperoni and ham — regardless of the salt content, but that he was glad that it now contained 27 percent less.

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DealBook Column: Relationship Science Plans Database of Names and Connections

It sounds like a Rolodex for the 1 percent: two million deal makers, power brokers and business executives — not only their names, but in many cases the names of their spouses and children and associates, their political donations, their charity work and more — all at a banker’s fingertips.

Such is the promise of a new company called Relationship Science.

Never heard of it? Until recently, neither had I. But a few months ago, whispers began that this young company was assembling a vast trove of information about big names in corporate America. What really piqued my interest was that bankrolling this start-up were some Wall Street heavyweights, including Henry R. Kravis, Ronald O. Perelman, Kenneth G. Langone, Joseph R. Perella, Stanley F. Druckenmiller and Andrew Tisch.

It turns out that over the last two years, with a staff of more than 800 people, mostly in India, Relationship Science has been quietly building what it hopes will be the ultimate business Who’s Who. If it succeeds, it could radically change the way Wall Street does business.

That’s a big if, of course. There are plenty of other databases out there. And there’s always Google. Normally I wouldn’t write about a technology company, but I kept hearing chatter about it from people on Wall Street.

Then I got a glimpse of this new system. Forget six degrees of Kevin Bacon. This is six degrees of Henry Kravis.

Here’s how it works: Let’s say a banker wants to get in touch with Mr. Kravis, the private equity deal maker, but doesn’t know him personally. The banker can type Mr. Kravis’s name into a Relationship Science search bar, and the system will scan personal contacts for people the banker knows who also know Mr. Kravis, or perhaps secondary or tertiary connections.

The system shows how the searcher is connected — perhaps a friend, or a friend of a friend, is on a charitable board — and also grades the quality of those connections by identifying them as “strong,” “average” or “weak.” You will be surprised at the many ways the database finds connections.

The major innovation is that, unlike Facebook or LinkedIn, it doesn’t matter if people have signed up for the service. Many business leaders aren’t on Facebook or LinkedIn, but Relationship Science doesn’t rely on user-generated content. It just scrapes the Web.

Relationship Science is the brainchild of Neal Goldman, a co-founder of CapitalIQ, a financial database service that is used by many Wall Street firms. Mr. Goldman sold CapitalIQ, which has 4,200 clients worldwide, to McGraw-Hill in 2004 for more than $200 million. That may explain why he was able to easily round up about $60 million in funds for Relationship Science from many boldface names in finance. He raised the first $6 million in three days.

“I knew there had to be a better way,” Mr. Goldman said about the way people search out others. Most people use Google to learn about people and ask friends and colleagues if they or someone they know can provide an introduction.

Relationship Science essentially does this automatically. It will even show you every connection you have to a specific company or organization.

“We live in a service economy,” Mr. Goldman said. “Building relationships is the most important part for selling and growing.”

Kenneth Langone, a financier and co-founder in Home Depot, said that when he saw a demonstration of the system he nearly fell off his chair. He used an unprintable four-letter word.

“My life is all about networking,” said Mr. Langone, who was so enthusiastic he became an investor and recently joined the board of Relationship Science. “How many times do I say, ‘How do I get to this guy?’ It is scary how much it helps.”

Mr. Goldman’s version of networking isn’t for everyone. His company charges $3,000 a year for a person to have access to the site. (That might sound expensive, but by Wall Street standards, it’s not.)

Price aside, the possibility that this system could lead to a deal or to a new wealth management client means it just might pay for itself.

“If you get one extra deal, the price is irrelevant,” Mr. Goldman said.

Apparently, his sales pitch is working. Already, some big financial firms have signed up for the service, which is still in a test phase. Investment bankers, wealth managers, private equity and venture capital investors have been trying to arrange meetings to see it, egged on, no doubt, by many of Mr. Goldman’s well-heeled investors. Even some development offices of charities have taken an interest.

The system I had a peek at was still a bit buggy. In some cases, it was missing information; in other cases the information was outdated. In still other instances, the program missed connections. For example, it didn’t seem to notice that Lloyd C. Blankfein, the chief executive of Goldman Sachs, should obviously know a certain senior partner at Goldman.

But the promise is there, if the initial kinks are worked out. I discovered I had paths I never knew existed to certain people or companies. (Mr. Goldman should market his product to reporters, too.)

One of the most vexing and perhaps unusual choices Mr. Goldman seems to have made with Relationship Science is to omit what would be truly valuable information: phone numbers and e-mail addresses.

Mr. Goldman explained the decision. “This isn’t about spamming people.” He said supplying phone numbers wouldn’t offer any value because people don’t like being cold-called, which he said was the antithesis of the purpose of his database.

Ultimately, he said, as valuable as the technology can be in discovering the path to a relationship, an artful introduction is what really counts.

“We bring the science,” he said. “You bring the art.”

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Gen. Joseph Dunford becomes U.S. commander in Afghanistan

KABUL, Afghanistan — Gen. Joseph F. Dunford Jr. took over Sunday as the newest and probably last U.S. commander in Afghanistan, charged with ending America's longest war even as insurgents continue to challenge the U.S.-backed Afghan government.

Dunford, a four-star Marine officer, arrives as the U.S.-led NATO coalition has closed three-quarters of its 800 bases and as it watches to see whether the Afghan security forces it trained can keep the Taliban insurgency at bay.

A ceremony inside the coalition's heavily guarded compound in Kabul marked the end of the 19-month tenure of Gen. John R. Allen, whose command was marred by a rash of deadly "insider" attacks by Afghan forces against their U.S. and NATO trainers and by strained relations with Afghan President Hamid Karzai.

But in remarks tinged with emotion Sunday, Allen pointed to significant progress, including the growth of the Afghan security forces, an increase in Afghan-led military operations, a sharp reduction in civilian casualties and the withdrawal of about 35,000 U.S. troops.

"This is victory," Allen said. "This is what winning looks like, and we should not shrink from using those words."

Allen was cleared of wrongdoing last month in a Pentagon inquiry into emails he exchanged with a woman who was linked to the sex scandal that forced the resignation of CIA Director David H. Petraeus. Allen has been nominated to lead North Atlantic Treaty Organization forces in Europe.

By replacing Allen with Dunford, the respected but low-key assistant commandant of the Marine Corps, President Obama hopes to repair ties with Karzai so they can cement a long-term security deal that could see several thousand U.S. troops remain in Afghanistan beyond the withdrawal of combat forces next year.

Embracing Allen at the ceremony, Dunford stressed continuity in the mission.

"What's not changed is the will of this coalition," he said. "What's not changed is the growing capability of our Afghan partners."

Obama is expected to spell out plans for the troop withdrawal and a post-2014 U.S. military presence in Afghanistan as early as his State of the Union message Tuesday. Although White House officials have said it's possible that no U.S. troops would remain, Pentagon officials are calling for a residual force that would focus on counter-terrorism and supporting Afghan forces.

Dunford will have a key seat at the table as U.S. officials try to work out the security agreement, which will hinge on earning assurances from Afghan leaders that they won't release prisoners currently in U.S. custody and will guarantee U.S. troops immunity from prosecution in Afghan courts. The failure to reach an immunity guarantee was a main reason no U.S. troops remained in Iraq after the war ended there.

About 65,000 U.S. troops remain in Afghanistan, down from a high of 100,000. Despite flagging U.S. support for the war, military commanders contend that removing the remaining troops precipitously could cause Afghan security forces to collapse.

In his Senate confirmation hearing in November, Dunford offered no prescriptions for troop levels but cautioned against withdrawing too quickly, saying it could destabilize the region.

U.S. officials recently estimated that a residual American force could number from 6,000 to 9,000 troops — fewer than the 15,000 senior military commanders had wanted. Experts say that Dunford will be charged with figuring out how such a force could achieve U.S. strategic aims.

"A major challenge will be identifying a mission that those troops can perform that's useful and doable with that small number," said Stephen Biddle, a defense analyst and professor at George Washington University.

Even as the war winds down, challenges remain. The insider attacks that killed 61 NATO troops in 2012 have dissipated, but only after U.S. troops scaled back joint operations with Afghan forces, hampering training efforts. By next year, Afghan forces are expected to be in the lead of all security operations, but the Taliban, though weakened, retains the ability to attack in Kabul and other strategic areas.

Experts say that Dunford, who earned the nickname "Fighting Joe" when he led a charge from Kuwait into Baghdad during the 2003 invasion of Iraq, could clash with a second-term Obama Cabinet, whose members — including Secretary of State John F. Kerry and, if he's confirmed, Chuck Hagel as Defense secretary — have not been strong supporters of a large long-term U.S. presence in Afghanistan.

"It's going to be extremely difficult for a commanding general who's not going to have many partners in the administration," said Thomas Donnelly, a military expert at the American Enterprise Institute, a conservative Washington think tank.

"It's a bit of a thankless task, for sure."

shashank.bengali@latimes.com

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