DealBook: Michael Dell’s Empire in a Buyout Spotlight

The computer empire of Michael S. Dell spreads across a campus of low-slung buildings in Round Rock, Tex.

But his financial empire — estimated at $16 billion — occupies the 21st floor of a dark glass skyscraper on Fifth Avenue in Manhattan.

It is there that MSD Capital, started by Mr. Dell 15 years ago to manage his fortune, has quietly built a reputation as one of the smartest investors on Wall Street. By amassing a prodigious portfolio of stocks, companies, real estate and timberland, Mr. Dell has reduced his exposure to the volatile technology sector and branched out into businesses as diverse as dentistry and landscaping.

Now, Mr. Dell is on the verge of making one of the biggest investments of his life. The 47-year-old billionaire and his private equity backers are locked in talks to acquire Dell, the company he started with $1,000 as a teenager three decades ago, in a leveraged buyout worth more than $20 billion. MSD could play a role in the Dell takeover, according to people briefed on the deal.

The private equity firm Silver Lake has been in negotiations to join with Mr. Dell on a transaction, along with other potential partners like wealthy Asian investors or foreign funds. Mr. Dell would be expected to roll his nearly 16 percent ownership of the company into the buyout, a stake valued at about $3.5 billion. He could also contribute additional personal money as part of the buyout.

That money is managed by MSD, among the more prominent so-called family offices that are set up to handle the personal investments of the wealthy. Others with large family offices include Bill Gates, whose Microsoft wealth financed the firm Cascade Investment, and New York’s mayor, Michael R. Bloomberg, who set up his firm, Willett Advisors, in 2010 to manage his personal and philanthropic assets.

“Some of these family offices are among the world’s most sophisticated investors and have the capital and talent to compete with the largest private equity firms and hedge funds,” said John P. Rompon, managing partner of McNally Capital, which helps structure private equity deals for family offices.

A spokesman for MSD declined to comment for this article. The buyout talks could still fall apart.

In 1998, Mr. Dell, then just 33 years old — and his company’s stock worth three times what it is today — decided to diversify his wealth and set up MSD. He staked the firm with $400 million of his own money, effectively starting his own personal money-management business.

To head the operation, Mr. Dell hired Glenn R. Fuhrman, a managing director at Goldman Sachs, and John C. Phelan, a principal at ESL Investments, the hedge fund run by Edward S. Lampert. He knew both men from his previous dealings with Wall Street. Mr. Fuhrman led a group at Goldman that marketed specialized investments like private equity and real estate to wealthy families like the Dells. And Mr. Dell was an early investor in Mr. Lampert’s fund.

Mr. Fuhrman and Mr. Phelan still run MSD and preside over a staff of more than 100 overseeing Mr. Dell’s billions and the assets in his family foundation. MSD investments include a stock portfolio, with positions in the apparel company PVH, owner of the Calvin Klein and Tommy Hilfiger brands, and DineEquity, the parent of IHOP and Applebee’s.

Among its real estate holdings are the Four Seasons Resort Maui in Hawaii and a stake in the New York-based developer Related Companies.

MSD also has investments in several private businesses, including ValleyCrest, which bills itself as the country’s largest landscape design company, and DentalOne Partners, a collection of dental practices.

Perhaps MSD’s most prominent deal came in 2008, in the middle of the financial crisis, when it joined a consortium that acquired the assets of the collapsed mortgage lender IndyMac Bank from the federal government for about $13.9 billion and renamed it OneWest Bank.

The OneWest purchase has been wildly successful. Steven Mnuchin, a former Goldman executive who led the OneWest deal, has said that the bank is expected to consider an initial public offering this year. An I.P.O. would generate big profits for Mr. Dell and his co-investors, according to people briefed on the deal.

Another arm of MSD makes select investments in outside hedge funds. Mr. Dell invested in the first fund raised by Silver Lake, the technology-focused private equity firm that might now become his partner in taking Dell private.
MSD’s principals have already made tidy fortunes. In 2009, Mr. Fuhrman, 47, paid $26 million for the Park Avenue apartment of the former Lehman Brothers chief executive Richard S. Fuld. Mr. Phelan, 48, and his wife, Amy, a former Dallas Cowboys cheerleader, also live in a Park Avenue co-op and built a home in Aspen, Colo.

Both are influential players on the contemporary art scene, with ARTNews magazine last year naming each of them among the world’s top 200 collectors. MSD, too, has dabbled in the visual arts. In 2010, MSD bought an archive of vintage photos from Magnum, including portraits of Marilyn Monroe and Mahatma Gandhi, and has put the collection on display at the University of Texas, Mr. Dell’s alma mater.

Just as the investment firms Rockefeller & Company (the Rockefellers, diversifying their oil fortune) and Bessemer Trust (the Phippses, using the name of the steelmaking process that formed the basis of their wealth) started out as investment vehicles for a single family, MSD has recently shown signs of morphing into a traditional money management business with clients beside Mr. Dell.

Last year, for the fourth time, an MSD affiliate raised money from outside investors when it collected about $1 billion for a stock-focused hedge fund, MSD Torchlight Partners. A 2010 fund investing in distressed European assets also manages about $1 billion. The Dell family is the anchor investor in each of the funds, according to people briefed on the investments.

MSD has largely remained below the radar, though its name emerged a decade ago in the criminal trial of the technology banker Frank Quattrone on obstruction of justice charges. Prosecutors introduced an e-mail that Mr. Fuhrman sent to Mr. Quattrone during the peak of the dot-com boom in which he pleaded for a large allotment of a popular Internet initial public offering.

“We know this is a tough one, but we wanted to ask for a little help with our Corvis allocation,” Mr. Fuhrman wrote. “We are looking forward to making you our ‘go to’ banker.”

The e-mail, which was not illegal, was meant to show the quid pro quo deals that were believed to have been struck between Mr. Quattrone and corporate chieftains like Mr. Dell — the bankers would give executives hot I.P.O.’s and the executives, in exchange, would hold out the possibility of giving business to the bankers. (Mr. Quattrone’s conviction was reversed on appeal.)

The MSD team has also shown itself to be loyal to its patron in other ways.

On the MSD Web site, in the frequently asked questions section, the firm asks and answers queries like “how many employees do you have” and “what kind of investments do you make.”

In the last question on the list, MSD asks itself, “Do you use Dell computer equipment?” The answer: “Exclusively!”

Michael J. de la Merced contributed reporting.

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This post has been revised to reflect the following correction:

Correction: January 19, 2013

An article on Friday about MSD Capital, an investment firm started by Michael S. Dell to manage his fortune, misstated, in some editions, the year its energy hedge fund raised $1 billion from outside investors. It was in 2011, not earlier this year. (Another of the firm's hedge funds, the MSD Torchlight Partners fund, raised $1 billion in 2012).

A version of this article appeared in print on 01/18/2013, on page B1 of the NewYork edition with the headline: Michael Dell’s Empire In a Buyout Spotlight.

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Really?: The Claim: In Children, Flu Vaccine Can Prevent Ear Infection

Really?

Anahad O’Connor tackles health myths.

THE FACTS

For many children, flu season means an increased risk of ear infections as well.

Although many people do not realize it, the middle ear has a direct link to the upper respiratory tract: the auditory, or Eustachian, tube. Infections in the nose or sinus cavities thus can spread to the ear.

Ear infections are a common scourge of childhood. Most children under the age of 8 will have at least one, and over a quarter will experience them chronically.

Although ear infections can strike at any time, they do show some seasonal variation. In a large study published in December, researchers looked at more than 270,000 cases of acute ear infections. They found that ear infections increased along with the flu and illnesses caused by two other respiratory viruses (though not the common cold).

So does that mean that vaccinating against the flu might prevent ear infections in children? Some researchers think so.

In a report published in 2011, scientists pooled data from eight randomized studies of 24,000 children between the ages of 6 months and 7 years. They found that those who received the FluMist vaccine, a nasal spray made with live but weakened flu virus, had a significantly lower risk of acute ear infections compared with children who received a placebo. Among children who ultimately got the flu, those who had been vaccinated had a 40 percent reduction in ear infections compared with children who were given a placebo.

A study published last year also found that the flu vaccine reduced the incidence of acute ear infections in children. FluMist appears to be more effective than the shot, but scientists say more research is needed.

THE BOTTOM LINE

The flu vaccine appears to reduce the likelihood of ear infections in children.

Read More..

Really?: The Claim: In Children, Flu Vaccine Can Prevent Ear Infection

Really?

Anahad O’Connor tackles health myths.

THE FACTS

For many children, flu season means an increased risk of ear infections as well.

Although many people do not realize it, the middle ear has a direct link to the upper respiratory tract: the auditory, or Eustachian, tube. Infections in the nose or sinus cavities thus can spread to the ear.

Ear infections are a common scourge of childhood. Most children under the age of 8 will have at least one, and over a quarter will experience them chronically.

Although ear infections can strike at any time, they do show some seasonal variation. In a large study published in December, researchers looked at more than 270,000 cases of acute ear infections. They found that ear infections increased along with the flu and illnesses caused by two other respiratory viruses (though not the common cold).

So does that mean that vaccinating against the flu might prevent ear infections in children? Some researchers think so.

In a report published in 2011, scientists pooled data from eight randomized studies of 24,000 children between the ages of 6 months and 7 years. They found that those who received the FluMist vaccine, a nasal spray made with live but weakened flu virus, had a significantly lower risk of acute ear infections compared with children who received a placebo. Among children who ultimately got the flu, those who had been vaccinated had a 40 percent reduction in ear infections compared with children who were given a placebo.

A study published last year also found that the flu vaccine reduced the incidence of acute ear infections in children. FluMist appears to be more effective than the shot, but scientists say more research is needed.

THE BOTTOM LINE

The flu vaccine appears to reduce the likelihood of ear infections in children.

Read More..

China Looks to Aerospace Industry in a Bid for Growth

TIANJIN, China — When Airbus executives arrived here seven years ago scouting for a location to assemble passenger jets, the broad, flat expanse next to Tianjin Binhai International Airport was a grassy field.

Now, Airbus, the European aerospace giant, has 20 large buildings and is churning out four A320 jetliners a month for mostly Chinese state-controlled carriers. The company also has two new neighbors — a sprawling rocket factory and a helicopter manufacturing complex — both producing for the Chinese military.

The rapid expansion of civilian and military aerospace manufacturing in Tianjin reflects China’s broader ambitions.

As Beijing’s leaders try to find new ways to invest $3 trillion of foreign reserves, the country has been aggressively expanding in industries with strong economic potential. The Chinese government and state-owned companies have already made a major push into financial services and natural resources, acquiring stakes in Morgan Stanley and Blackstone and buying oil and gas fields around the world.

Aerospace represents the latest frontier for China, which is eyeing parts manufacturers, materials producers, leasing businesses, cargo airlines and airport operators. The country now rivals the United States as a market for civilian airliners, which China hopes to start supplying from domestic production. And the new leadership named at the Party Congress in November has publicly emphasized long-range missiles and other aerospace programs in its push for military modernization.

If Boeing’s difficulties with its recently grounded aircraft, the Dreamliner, weigh on the industry, it could create opportunity. Chinese companies, which have plenty of capital, have been welcomed by some American companies as a way to create jobs. Wall Street has been eager, too, at a time when other merger activity has been weak.

Washington is trying to figure out what to do about China’s deal-making broadly. “Many of these transactions raise important security issues for our country,” said Michael R. Wessel, a member of the U.S.-China Economic and Security Review Commission, which was created by Congress to monitor the bilateral relationship. “China’s interest in promoting these investments isn’t necessarily consistent with our own interests, and it’s appropriate to thoroughly examine the transactions.”

In aerospace, the Chinese deal-makers have deep ties to the military, raising additional issues for American regulators. The main contractor for the country’s air force, the state-owned China Aviation Industry Corporation, known as Avic, has set up a private equity fund to purchase companies with so-called dual-use technology that has civilian and military applications, with the goal of investing up to $3 billion. In 2010, Avic acquired the overseas licensing rights for small aircraft made by Epic Aircraft of Bend, Ore., using lightweight yet strong carbon-fiber composites — the same material used for high-performance fighter jets.

Provincial and local government agencies in Shaanxi province, a hub of Chinese military aircraft testing and production, have set up another, similar-sized fund for acquisitions. Last month, a consortium of Chinese investors, including the Shaanxi fund, struck a $4.23 billion deal with the American International Group to buy 80 percent of the International Lease Finance Corporation, which owns the world’s second-largest passenger jet fleet.

“There has always been an obvious cross-fertilization of ideas, expertise and money between the civilian and military,” said Martin Craigs, a longtime aerospace executive in Asia who is now the chairman of the Aerospace Forum Asia, a nonprofit group in Hong Kong. He added that Chinese companies had been actively hiring senior American and European aerospace engineers, so national security concerns could be circumvented by hiring the right people.

The push into aerospace coincides with growing worries in the West and across Asia about China’s increasingly assertive territorial claims, including the dispatch of Chinese warships to waters long patrolled by Japan, the Philippines and Vietnam.

Coincidentally, hours after the A.I.G. deal was announced, two Chinese navy destroyers and two frigates showed up in disputed waters patrolled by Japan. China and Japan have stepped up public criticisms of each other since. And the Obama administration has begun a strategic “pivot,” shifting military forces from the Mideast back to the western Pacific, a move that Chinese officials have criticized as an attempt to contain their country.

Such confrontations in the region are drawing attention to China’s deal-making ambitions.

In October, a $1.79 billion bid by a business linked to Beijing’s municipal government to acquire the corporate jet and propeller plane operations of bankrupt Hawker Beechcraft in Wichita, Kan., fell apart over national security concerns in Washington. Executives found it hard to disentangle the civilian operations from the company’s military contracting business.

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Digital Daredevil Behind Megaupload Has a New Venture

AUCKLAND — At 6:48 a.m. Sunday, the Internet tycoon Kim Dotcom opened his new file-storage Web site to the public — one year to the minute after the police raided the mansion he rents in New Zealand.

The raid was part of a coordinated operation with the F.B.I. that also shut down Megaupload, the file-sharing business he had founded.

Mr. Dotcom faces charges in the United States of pirating copyrighted material and money laundering and is awaiting an extradition hearing in New Zealand. But on Sunday, his focus was on the new site, which was already straining under heavy traffic within two hours of its introduction. In the first 14 hours of the site’s operation, more than half a million people registered to use it, Mr. Dotcom said.

“This should not be seen as the mocking of any government or Hollywood,” Mr. Dotcom, 39, said Sunday at a news conference at the Auckland mansion. “This is us being innovators and executing our right to run a business.”

The event marking the introduction of Mega, held at the same property that had been raided by the police, was designed to be a spectacle. As Mr. Dotcom addressed a large crowd of journalists and guests, actors dressed as armed police officers rappelled down the sloping roof of the main house and shouted that all those present would be detained. A helicopter emblazoned with “F.B.I.” hovered overhead.

Mr. Dotcom, a German citizen and permanent resident of New Zealand who was born Kim Schmitz, was arrested Jan. 20, 2012. During the raid on his home that day, the police seized vehicles worth about 6 million New Zealand dollars, or $5 million, and froze about 11 million dollars in bank accounts, according to a news release issued at the time.

Over the past year, Mr. Dotcom has become an ever-prominent figure in New Zealand as the legal and political saga surrounding his case has played out in the public sphere.

In June, a High Court judge ruled that the police had used the wrong type of search warrants to enter Mr. Dotcom’s property, meaning that the raid had been illegal. In September, Prime Minister John Key of New Zealand apologized to Mr. Dotcom after it was disclosed that the country’s intelligence agency had acted illegally by spying on him, even though he holds a permanent resident’s visa.

Mega, Mr. Dotcom’s new Web site, is a file-storage and sharing system that encrypts files on one’s computer before they are uploaded to the site’s servers. Files can then be downloaded and decrypted. This means that files on Mega’s servers cannot be read by anyone, including by the company itself, without the user’s decryption key.

The allegation that Mr. Dotcom’s previous venture, Megaupload, knew its users were illegally uploading copyrighted material — and indeed sought to encourage the practice — is a crucial part of the U.S. Department of Justice’s indictment against the site and those who operated it.

In contrast, the new site appears to distance Mega intentionally from any legal responsibility for the content on its servers, although the terms and conditions of the site do explicitly forbid uploading copyrighted material.

“What he’s trying to do is give himself a second-string argument,” Charles Alexander, a lawyer in Sydney who specializes in intellectual property law, told The Associated Press. “‘Even if I was wrong before, this one’s all right because how can I control something if I don’t know that it’s there?”’ he imagined the new company thinking. “I can understand the argument; whether it would be successful or not is another matter.”

U.S. prosecutors declined to comment on the new site, The A.P. reported, referring only to a court document that cites promises Mr. Dotcom made while seeking bail, including one that he would not start a Megaupload-style business until the criminal case was resolved.

“Legally it’s probably the most scrutinized Internet start-up in history,” Mr. Dotcom said. “Every pixel on the site has been checked for, you know, all kinds of illegal — potential legal challenges. We have a great team of very talented lawyers that are experts in intellectual property and Internet law, and they have worked together with us to create Mega.”

The Motion Picture Association of America, which has filed complaints about alleged copyright infringement by Megaupload, told The A.P. that it was skeptical that Mr. Dotcom’s new site was harmless. “We are still reviewing how this new project will operate, but we do know that Kim Dotcom has built his career and his fortune on stealing creative works,” it said in a news release.

The Mega site offers 50 gigabytes of storage free; additional storage and bandwidth can be purchased at three tiers of monthly fees.

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Well: Holly the Cat's Incredible Journey

Nobody knows how it happened: an indoor housecat who got lost on a family excursion managing, after two months and about 200 miles, to return to her hometown.

Even scientists are baffled by how Holly, a 4-year-old tortoiseshell who in early November became separated from Jacob and Bonnie Richter at an R.V. rally in Daytona Beach, Fla., appeared on New Year’s Eve — staggering, weak and emaciated — in a backyard about a mile from the Richters’ house in West Palm Beach.

“Are you sure it’s the same cat?” wondered John Bradshaw, director of the University of Bristol’s Anthrozoology Institute. In other cases, he has suspected, “the cats are just strays, and the people have got kind of a mental justification for expecting it to be the same cat.”

But Holly not only had distinctive black-and-brown harlequin patterns on her fur, but also an implanted microchip to identify her.

“I really believe these stories, but they’re just hard to explain,” said Marc Bekoff, a behavioral ecologist at the University of Colorado. “Maybe being street-smart, maybe reading animal cues, maybe being able to read cars, maybe being a good hunter. I have no data for this.”

There is, in fact, little scientific dogma on cat navigation. Migratory animals like birds, turtles and insects have been studied more closely, and use magnetic fields, olfactory cues, or orientation by the sun.

Scientists say it is more common, although still rare, to hear of dogs returning home, perhaps suggesting, Dr. Bradshaw said, that they have inherited wolves’ ability to navigate using magnetic clues. But it’s also possible that dogs get taken on more family trips, and that lost dogs are more easily noticed or helped by people along the way.

Cats navigate well around familiar landscapes, memorizing locations by sight and smell, and easily figuring out shortcuts, Dr. Bradshaw said.

Strange, faraway locations would seem problematic, although he and Patrick Bateson, a behavioral biologist at Cambridge University, say that cats can sense smells across long distances. “Let’s say they associate the smell of pine with wind coming from the north, so they move in a southerly direction,” Dr. Bateson said.

Peter Borchelt, a New York animal behaviorist, wondered if Holly followed the Florida coast by sight or sound, tracking Interstate 95 and deciding to “keep that to the right and keep the ocean to the left.”

But, he said, “nobody’s going to do an experiment and take a bunch of cats in different directions and see which ones get home.”

The closest, said Roger Tabor, a British cat biologist, may have been a 1954 study in Germany which cats placed in a covered circular maze with exits every 15 degrees most often exited in the direction of their homes, but more reliably if their homes were less than five kilometers away.

New research by the National Geographic and University of Georgia’s Kitty Cams Project, using video footage from 55 pet cats wearing video cameras on their collars, suggests cat behavior is exceedingly complex.

For example, the Kitty Cams study found that four of the cats were two-timing their owners, visiting other homes for food and affection. Not every cat, it seems, shares Holly’s loyalty.

KittyCams also showed most of the cats engaging in risky behavior, including crossing roads and “eating and drinking substances away from home,” risks Holly undoubtedly experienced and seems lucky to have survived.

But there have been other cats who made unexpected comebacks.

“It’s actually happened to me,” said Jackson Galaxy, a cat behaviorist who hosts “My Cat From Hell” on Animal Planet. While living in Boulder, Colo., he moved across town, whereupon his indoor cat, Rabbi, fled and appeared 10 days later at the previous house, “walking five miles through an area he had never been before,” Mr. Galaxy said.

Professor Tabor cited longer-distance reports he considered credible: Murka, a tortoiseshell in Russia, traveling about 325 miles home to Moscow from her owner’s mother’s house in Voronezh in 1989; Ninja, who returned to Farmington, Utah, in 1997, a year after her family moved from there to Mill Creek, Wash.; and Howie, an indoor Persian cat in Australia who in 1978 ran away from relatives his vacationing family left him with and eventually traveled 1,000 miles to his family’s home.

Professor Tabor also said a Siamese in the English village of Black Notley repeatedly hopped a train, disembarked at White Notley, and walked several miles back to Black Notley.

Still, explaining such journeys is not black and white.

In the Florida case, one glimpse through the factual fog comes on the little cat’s feet. While Dr. Bradshaw speculated Holly might have gotten a lift, perhaps sneaking under the hood of a truck heading down I-95, her paws suggest she was not driven all the way, nor did Holly go lightly.

“Her pads on her feet were bleeding,” Ms. Richter said. “Her claws are worn weird. The front ones are really sharp, the back ones worn down to nothing.”

Scientists say that is consistent with a long walk, since back feet provide propulsion, while front claws engage in activities like tearing. The Richters also said Holly had gone from 13.5 to 7 pounds.

Holly hardly seemed an adventurous wanderer, though her background might have given her a genetic advantage. Her mother was a feral cat roaming the Richters’ mobile home park, and Holly was born inside somebody’s air-conditioner, Ms. Richter said. When, at about six weeks old, Holly padded into their carport and jumped into the lap of Mr. Richter’s mother, there were “scars on her belly from when the air conditioner was turned on,” Ms. Richter said.

Scientists say that such early experience was too brief to explain how Holly might have been comfortable in the wild — after all, she spent most of her life as an indoor cat, except for occasionally running outside to chase lizards. But it might imply innate personality traits like nimbleness or toughness.

“You’ve got these real variations in temperament,” Dr. Bekoff said. “Fish can by shy or bold; there seem to be shy and bold spiders. This cat, it could be she has the personality of a survivor.”

He said being an indoor cat would not extinguish survivalist behaviors, like hunting mice or being aware of the sun’s orientation.

The Richters — Bonnie, 63, a retired nurse, and Jacob, 70, a retired airline mechanics’ supervisor and accomplished bowler — began traveling with Holly only last year, and she easily tolerated a hotel, a cabin or the R.V.

But during the Good Sam R.V. Rally in Daytona, when they were camping near the speedway with 3,000 other motor homes, Holly bolted when Ms. Richter’s mother opened the door one night. Fireworks the next day may have further spooked her, and, after searching for days, alerting animal agencies and posting fliers, the Richters returned home catless.

Two weeks later, an animal rescue worker called the Richters to say a cat resembling Holly had been spotted eating behind the Daytona franchise of Hooters, where employees put out food for feral cats.

Then, on New Year’s Eve, Barb Mazzola, a 52-year-old university executive assistant, noticed a cat “barely standing” in her backyard in West Palm Beach, struggling even to meow. Over six days, Ms. Mazzola and her children cared for the cat, putting out food, including special milk for cats, and eventually the cat came inside.

They named her Cosette after the orphan in Les Misérables, and took her to a veterinarian, Dr. Sara Beg at Paws2Help. Dr. Beg said the cat was underweight and dehydrated, had “back claws and nail beds worn down, probably from all that walking on pavement,” but was “bright and alert” and had no parasites, heartworm or viruses. “She was hesitant and scared around people she didn’t know, so I don’t think she went up to people and got a lift,” Dr. Beg said. “I think she made the journey on her own.”

At Paws2Help, Ms. Mazzola said, “I almost didn’t want to ask, because I wanted to keep her, but I said, ‘Just check and make sure she doesn’t have a microchip.’” When told the cat did, “I just cried.”

The Richters cried, too upon seeing Holly, who instantly relaxed when placed on Mr. Richter’s shoulder. Re-entry is proceeding well, but the mystery persists.

“We haven’t the slightest idea how they do this,” Mr. Galaxy said. “Anybody who says they do is lying, and, if you find it, please God, tell me what it is.”

Read More..

Well: Holly the Cat's Incredible Journey

Nobody knows how it happened: an indoor housecat who got lost on a family excursion managing, after two months and about 200 miles, to return to her hometown.

Even scientists are baffled by how Holly, a 4-year-old tortoiseshell who in early November became separated from Jacob and Bonnie Richter at an R.V. rally in Daytona Beach, Fla., appeared on New Year’s Eve — staggering, weak and emaciated — in a backyard about a mile from the Richters’ house in West Palm Beach.

“Are you sure it’s the same cat?” wondered John Bradshaw, director of the University of Bristol’s Anthrozoology Institute. In other cases, he has suspected, “the cats are just strays, and the people have got kind of a mental justification for expecting it to be the same cat.”

But Holly not only had distinctive black-and-brown harlequin patterns on her fur, but also an implanted microchip to identify her.

“I really believe these stories, but they’re just hard to explain,” said Marc Bekoff, a behavioral ecologist at the University of Colorado. “Maybe being street-smart, maybe reading animal cues, maybe being able to read cars, maybe being a good hunter. I have no data for this.”

There is, in fact, little scientific dogma on cat navigation. Migratory animals like birds, turtles and insects have been studied more closely, and use magnetic fields, olfactory cues, or orientation by the sun.

Scientists say it is more common, although still rare, to hear of dogs returning home, perhaps suggesting, Dr. Bradshaw said, that they have inherited wolves’ ability to navigate using magnetic clues. But it’s also possible that dogs get taken on more family trips, and that lost dogs are more easily noticed or helped by people along the way.

Cats navigate well around familiar landscapes, memorizing locations by sight and smell, and easily figuring out shortcuts, Dr. Bradshaw said.

Strange, faraway locations would seem problematic, although he and Patrick Bateson, a behavioral biologist at Cambridge University, say that cats can sense smells across long distances. “Let’s say they associate the smell of pine with wind coming from the north, so they move in a southerly direction,” Dr. Bateson said.

Peter Borchelt, a New York animal behaviorist, wondered if Holly followed the Florida coast by sight or sound, tracking Interstate 95 and deciding to “keep that to the right and keep the ocean to the left.”

But, he said, “nobody’s going to do an experiment and take a bunch of cats in different directions and see which ones get home.”

The closest, said Roger Tabor, a British cat biologist, may have been a 1954 study in Germany which cats placed in a covered circular maze with exits every 15 degrees most often exited in the direction of their homes, but more reliably if their homes were less than five kilometers away.

New research by the National Geographic and University of Georgia’s Kitty Cams Project, using video footage from 55 pet cats wearing video cameras on their collars, suggests cat behavior is exceedingly complex.

For example, the Kitty Cams study found that four of the cats were two-timing their owners, visiting other homes for food and affection. Not every cat, it seems, shares Holly’s loyalty.

KittyCams also showed most of the cats engaging in risky behavior, including crossing roads and “eating and drinking substances away from home,” risks Holly undoubtedly experienced and seems lucky to have survived.

But there have been other cats who made unexpected comebacks.

“It’s actually happened to me,” said Jackson Galaxy, a cat behaviorist who hosts “My Cat From Hell” on Animal Planet. While living in Boulder, Colo., he moved across town, whereupon his indoor cat, Rabbi, fled and appeared 10 days later at the previous house, “walking five miles through an area he had never been before,” Mr. Galaxy said.

Professor Tabor cited longer-distance reports he considered credible: Murka, a tortoiseshell in Russia, traveling about 325 miles home to Moscow from her owner’s mother’s house in Voronezh in 1989; Ninja, who returned to Farmington, Utah, in 1997, a year after her family moved from there to Mill Creek, Wash.; and Howie, an indoor Persian cat in Australia who in 1978 ran away from relatives his vacationing family left him with and eventually traveled 1,000 miles to his family’s home.

Professor Tabor also said a Siamese in the English village of Black Notley repeatedly hopped a train, disembarked at White Notley, and walked several miles back to Black Notley.

Still, explaining such journeys is not black and white.

In the Florida case, one glimpse through the factual fog comes on the little cat’s feet. While Dr. Bradshaw speculated Holly might have gotten a lift, perhaps sneaking under the hood of a truck heading down I-95, her paws suggest she was not driven all the way, nor did Holly go lightly.

“Her pads on her feet were bleeding,” Ms. Richter said. “Her claws are worn weird. The front ones are really sharp, the back ones worn down to nothing.”

Scientists say that is consistent with a long walk, since back feet provide propulsion, while front claws engage in activities like tearing. The Richters also said Holly had gone from 13.5 to 7 pounds.

Holly hardly seemed an adventurous wanderer, though her background might have given her a genetic advantage. Her mother was a feral cat roaming the Richters’ mobile home park, and Holly was born inside somebody’s air-conditioner, Ms. Richter said. When, at about six weeks old, Holly padded into their carport and jumped into the lap of Mr. Richter’s mother, there were “scars on her belly from when the air conditioner was turned on,” Ms. Richter said.

Scientists say that such early experience was too brief to explain how Holly might have been comfortable in the wild — after all, she spent most of her life as an indoor cat, except for occasionally running outside to chase lizards. But it might imply innate personality traits like nimbleness or toughness.

“You’ve got these real variations in temperament,” Dr. Bekoff said. “Fish can by shy or bold; there seem to be shy and bold spiders. This cat, it could be she has the personality of a survivor.”

He said being an indoor cat would not extinguish survivalist behaviors, like hunting mice or being aware of the sun’s orientation.

The Richters — Bonnie, 63, a retired nurse, and Jacob, 70, a retired airline mechanics’ supervisor and accomplished bowler — began traveling with Holly only last year, and she easily tolerated a hotel, a cabin or the R.V.

But during the Good Sam R.V. Rally in Daytona, when they were camping near the speedway with 3,000 other motor homes, Holly bolted when Ms. Richter’s mother opened the door one night. Fireworks the next day may have further spooked her, and, after searching for days, alerting animal agencies and posting fliers, the Richters returned home catless.

Two weeks later, an animal rescue worker called the Richters to say a cat resembling Holly had been spotted eating behind the Daytona franchise of Hooters, where employees put out food for feral cats.

Then, on New Year’s Eve, Barb Mazzola, a 52-year-old university executive assistant, noticed a cat “barely standing” in her backyard in West Palm Beach, struggling even to meow. Over six days, Ms. Mazzola and her children cared for the cat, putting out food, including special milk for cats, and eventually the cat came inside.

They named her Cosette after the orphan in Les Misérables, and took her to a veterinarian, Dr. Sara Beg at Paws2Help. Dr. Beg said the cat was underweight and dehydrated, had “back claws and nail beds worn down, probably from all that walking on pavement,” but was “bright and alert” and had no parasites, heartworm or viruses. “She was hesitant and scared around people she didn’t know, so I don’t think she went up to people and got a lift,” Dr. Beg said. “I think she made the journey on her own.”

At Paws2Help, Ms. Mazzola said, “I almost didn’t want to ask, because I wanted to keep her, but I said, ‘Just check and make sure she doesn’t have a microchip.’” When told the cat did, “I just cried.”

The Richters cried, too upon seeing Holly, who instantly relaxed when placed on Mr. Richter’s shoulder. Re-entry is proceeding well, but the mystery persists.

“We haven’t the slightest idea how they do this,” Mr. Galaxy said. “Anybody who says they do is lying, and, if you find it, please God, tell me what it is.”

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N.T.S.B. Rules Out a Cause for Battery Fire on 787 Dreamliner

Federal investigations said Sunday that they had ruled out excessive voltage as the cause of a battery fire on a Boeing 787 in Boston this month, widening the mystery into what led to the grounding of the world’s most technologically advanced jet after a second battery-related problem last week.

With investigators focused on the plane’s lithium-ion batteries, the National Transportation Safety Board said an examination of the data from the plane’s flight recorder indicated that the battery “did not exceed the designed voltage of 32 volts.” The fire aboard a Japan Airlines plane on Jan. 7 at Logan International Airport in Boston occurred after the passengers had gotten off.

Last week, a battery problem on another 787 forced an All Nippon Airways jetliner to make an emergency landing in Japan. That episode prompted aviation authorities around the world to ground the plane, also known as the Dreamliner. The Federal Aviation Administration said last week that it would not lift the ban until Boeing could show that the batteries were safe.

The safety board did not address the grounding issue or provide a timetable for its investigation, which industry experts said could take months.

But with investigators on a global quest to find out what went wrong, the safety board’s statement could mean that there might not be a rapid resumption of 787 flights. The 787 first entered service in November 2011 after more than three and a half years of production delays. Eight airlines currently own 50 787s, including United Airlines.

On Friday, Japanese safety officials, who are in charge of investigating the second battery problem, suggested that overcharging a battery might have caused it to overheat. Pilots decided to make an emergency landing 20 minutes after takeoff after receiving several alarms about the battery and smelled smoke in the cockpit.

That investigation is conducted by Japan’s transportation safety board. American investigators are helping with the inquiry.

Speaking after the American safety board’s statement on Sunday, a Japanese investigator said their inquiry was not as far along as the American one.

“The N.T.S.B.'s investigation started earlier,” the inspector, Hideyo Kosugi, told Reuters. “We still haven’t taken X-rays or CT-scans of the battery. In our case, both the battery and the surrounding systems are still stored,” at Tokyo’s Haneda Airport.

The GS Yuasa Corporation of Japan, one of the world’s leading lithium-ion battery manufacturers, makes the batteries for the 787, and Thales, of France, makes the control systems for the battery. The battery is part of a complex electrical system that powers the 787. Like many other components and structures, Boeing outsourced much of the manufacturing to partners around the world.

The safety board typically conducts investigations through a process of elimination, and rules out possible causes along the way.

It said that the lithium-ion battery that powered the auxiliary power unit, a small jet engine used on the ground, had been examined in the safety board’s Materials Laboratory in Washington.

The battery was first X-rayed and put through a CT scan. Investigators then disassembled it into its eight individual cells for detailed examination and documentation. Three of the cells were selected for more detailed radiographic examination.

Investigators have also examined several other components that they removed from the airplane, including wire bundles and battery management circuit boards as well as the battery management unit, the controller for the auxiliary power unit, the battery charger and the power start unit.

On Tuesday, investigators will convene in Arizona to test and examine the battery charger and download nonvolatile memory from the auxiliary power unit controller. Several other components have been sent for download or examination to Boeing’s facility in Seattle and to the manufacturer in Japan.

The plane’s charger and start power will be sent to Securaplane, a maker of aircraft avionics and electrical systems, which is based in Tucson, and where they will be tested. The controller for the auxiliary power unit will be test in Phoenix where its maker, Pratt & Whitney Power, is based.

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Africa Must Take Lead in Mali, France Says

Marco Gualazzini for The New York Times

A French armored vehicle patrolled a strategic bridge over the Niger River in Markala, Mali, on Saturday.

PARIS — With French officials saying confidently on Saturday that an advance by Islamist militants on Bamako, Mali’s capital, had been halted, France’s foreign minister told African leaders that “our African friends need to take the lead” in a multilateral military intervention in Mali.

Foreign Minister Laurent Fabius spoke in Abidjan, Ivory Coast, at a summit meeting to discuss how to accelerate the involvement of West African troops in Mali, although he acknowledged that it could be some weeks before they were there in force.

“Step by step, I think it’s a question from what I heard this morning of some days, some weeks,” Mr. Fabius said, referring to the time frame when the bulk of troops from the Economic Community of West African States, the regional group known as Ecowas, would arrive.

“We must, as quickly as possible, furnish the logistical and financial means required by the Malian Army and Ecowas,” he said.

France intervened militarily last week after the Malian government said it was afraid that Islamist militants could continue their push south and take over Bamako with little opposition from a dispirited army.

But once the situation is more stable, France wants African troops to do most of the work to wrest the north of Mali from the Islamists, as called for under a United Nations Security Council resolution passed in December.

French officials conceded, however, that there were disputes over how African participation would be paid for and about the best way to transport troops to Mali. In Paris, French officials said that the United States, while willing to help ferry African troops, wanted to bill France for the use of transport aircraft, which officials said would not go down well with the French.

But the officials said that France and the United States were sharing intelligence about Mali and the Sahel region garnered from drones and other means, and discussions with Washington continued amicably.

The African troops also need equipment and training, and Mr. Fabius pointed to a donors’ summit meeting in Ethiopia scheduled for Jan. 29 as “a key moment.” He called on “all partners of African development” to “make generous contributions to this work of solidarity, peace and security.”

The French defense minister, Jean-Yves Le Drian, said Saturday that France now had 2,000 troops in Mali, with more in the region, and that France was likely to add to its forces there. He said the Mali operation could involve at least 4,000 soldiers in the region, and French officials said that they would put no fixed limit on the number of troops that might be required to restore the territorial integrity of Mali and drive back the Islamist fighters, who have ties to Al Qaeda.

The French officials emphasized that the targets of the mission were the Islamists, not the Tuaregs or other Malians fighting for more autonomy or independence in the north. They also said that Islamist terrorists in Mali had made four or five efforts to carry out operations in France in the last few years.

Despite reports of French forces fighting on the ground in and around the village of Diabaly, Mr. Le Drian said that “there has been no ground combat” there, only airstrikes. He dismissed reports from Malian Army sources that French troops were fighting or even in the town. “I think someone is hallucinating,” he said. “There has been no fighting on the ground in Diabaly.”

Residents have told local news agencies that the Islamists have left Diabaly, which they seized as an important way station on the road to the administrative capital, Ségou, north of Bamako.

French airstrikes have halted the Islamist advance toward Mopti and nearby Sévaré, French officials said, while they confirmed that the village of Konna, north of Mopti, was now back in the hands of Mali’s government. The French have also sent troops along with Malian forces to secure a bridge over the Niger River at Markala, north of Ségou.

Also on Saturday, Human Rights Watch said it had received what it called credible reports of abuses, including killings, being committed by Malian security forces around Niono against Tuareg and Arab civilians, who are associated with the rebellion in the north. The Islamists have also been condemned for abuses, including stoning of women.

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With Graph Search, Facebook Bets on More Sharing

SAN FRANCISCO — Facebook’s greatest triumph has been to persuade a seventh of the world’s population to share their personal lives online.

Now the social network is taking on its archrival, Google, with a search tool to mine that personal information, just as people are growing more cautious about sharing on the Internet and even occasionally removing what they have already put up.

Whether Facebook’s more than one billion users will continue to divulge even more private details will determine whether so-called social search is the next step in how we navigate the online world. It will also determine whether Facebook has found a business model that will make it a lot of money.

“There’s a big potential upside for both Facebook and users, but getting people to change their behaviors in relation to what they share will not be easy,” said Andrew T. Stephen, who teaches marketing at the University of Pittsburgh and studies consumer behavior on online social networks.

This week, Facebook unveiled its search tool, which it calls graph search, a reference to the network of friends its users have created. The company’s algorithms will filter search results for each person, ranking the friends and brands that it thinks a user would trust the most. At first, it will mine users’ interests, photos, check-ins and “likes,” but later it will search through other information, including status updates.

“While the usefulness of graph search increases as people share more about their favorite restaurants, music and other interests, the product doesn’t hinge on this,” a Facebook spokesman, Jonathan Thaw, said.

Nevertheless, the company engineers who created the tool — former Google employees — say that the project will not reach its full potential if Facebook data is “sparse,” as they call it. But the company is confident people will share more data, be it the movies they watch, the dentists they trust or the meals that make their mouths water.

The things people declare on Facebook will be useful, when someone searches for those interests, Tom Stocky, one of the creators of Facebook search, said in an interview this week. Conversely, by liking more things, he said, people will become more useful in the eyes of their friends.

“You might be inclined to ‘like’ what you like so when your friends search, they’ll find it,” he said. “I probably would never have liked my dentist on Facebook before, but now I do because it’s a way of letting my friends know.”

Mr. Stocky offered these examples of how more information may be desirable: A single man may want to be discovered when a friend of a friend is searching for eligible bachelors in San Francisco or a restaurant that stays open late may want to be found by a night owl.

“People have shared all this great stuff on Facebook,” Mr. Stocky said. “It’s latent value. We wanted a way to unlock that.”

Independent studies suggest that Facebook users are becoming more careful about how much they reveal online, especially since educators and employers typically scour Facebook profiles.

A Northwestern University survey of 500 young adults in the summer of 2012 found that the majority avoided posting status updates because they were concerned about who would see them. The study also found that many had deleted or blocked contacts from seeing their profiles and nearly two-thirds had untagged themselves from a photo, post or check-in.

“These behavioral patterns seem to suggest that many young adults are less keen on sharing at least certain details about their lives rather than more,” said Eszter Hargittai, an associate professor of communication studies at Northwestern, who led the yet unpublished study among men and women aged 21 and 22.

Also last year, the Pew Internet Center found that social network users, including those on Facebook, were more aggressively pruning their profiles — untagging photos, removing friends and deleting comments.

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