No surprise: YouTube, Angry Birds, Instagram and Facebook among 2012′s top apps

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Reid among 7 NFL coaches sacked in firing frenzy

Andy Reid is the winningest coach in the history of the Philadelphia Eagles. Lovie Smith led the Chicago Bears to the 2007 Super Bowl.

Now they're looking for work.

Seven coaches and five general managers were fired Monday in a flurry of pink slips that were delivered the day after the regular-season ended.

Ken Whisenhunt is out after helping Arizona reach the Super Bowl following the 2008 season. Also gone: Norv Turner in San Diego, Pat Shurmur in Cleveland, Romeo Crennel in Kansas City and Chan Gailey in Buffalo.

Three teams made it a clean sweep, saying goodbye to the GM along with the coach — San Diego, Cleveland, Arizona. General managers also were fired in Jacksonville and New York, where Rex Ryan held onto his coaching job with the Jets despite a losing record.

Reid was the longest tenured of the coaches, removed after 14 seasons and a Super Bowl appearance in 2005 — a loss to New England. Smith spent nine seasons with the Bears.

Turner has now been fired as head coach by three teams. San Diego won the AFC West from 2006-09, but didn't make the postseason the last three years under Turner and GM A.J. Smith.

"Both Norv and A.J. are consummate NFL professionals, and they understand that in this league, the bottom line is winning," Chargers President Dean Spanos said in a statement.

Whisenhunt was fired after six seasons. He had more wins than any other coach in Cardinals history, going 45-51, and has one year worth about $5.5 million left on his contract. GM Rod Graves had been with Arizona for 16 years, nine in his current position. A 5-11 record after a 4-0 start cost him and Whisenhunt their jobs.

Gailey was dumped after three seasons with the Bills; Shurmur after two; and Crennel had one full season with the Chiefs.

Reid took over a 3-13 Eagles team in 1999, drafted Donovan McNabb with the No. 2 overall pick and quickly turned the franchise into a title contender.

But the team hasn't won a playoff game since 2008 and after last season's 8-8 finish, owner Jeffrey Lurie said he was looking for improvement this year. Instead, it was even worse. The Eagles finished 4-12.

"When you have a season like that, it's embarrassing. It's personally crushing to me and it's terrible," Lurie said at a news conference. He said he respects Reid and plans to stay friends with him, "but, it is time for the Eagles to move in a new direction."

Shurmur went 9-23 in his two seasons with the Browns, who will embark on yet another offseason of change — the only constant in more than a decade of futility. Cleveland has lost at least 11 games in each of the past five seasons and made the playoffs just once since returning to the NFL as an expansion team in 1999.

"Ultimately our objective is to put together an organization that will be the best at everything we do," Browns CEO Joe Banner said. "On the field, our only goal is trying to win championships."

Crennel took over with three games left in the 2011 season after GM Scott Pioli fired Todd Haley. Kansas City will have the No. 1 pick in the NFL draft as a result of having one of the worst seasons in its 53-year history. The only other time the Chiefs finished 2-14 was 2008, the year before Pioli was hired.

"I am embarrassed by the poor product we gave our fans this season, and I believe we have no choice but to move the franchise in a different direction," Chiefs chairman Clark Hunt said in a statement.

Gailey, the former Dallas Cowboys coach, compiled a 16-32 record in his three seasons in Buffalo, never doing better than 6-10.

"This will probably be, and I say probably, but I think it will be the first place that's ever fired me that I'll pull for," Gailey said.

Smith and the Bears went 10-6 this season and just missed a playoff spot. But Chicago started 7-1 and has struggled to put together a productive offense throughout Smith's tenure. His record was 81-63 with the Bears, and he took them to one Super Bowl loss and to one NFC championship game defeat.

Receiver and kick return standout Devin Hester was bitter about Smith's firing.

"The media, the false fans, you all got what you all wanted," Hester said as he cleared out his locker. "The majority of you all wanted him out. As players we wanted him in. I guess the fans — the false fans — outruled us. I thought he was a great coach, probably one of the best coaches I've ever been around."

The fired GMs included Mike Tannenbaum of the Jets; Gene Smith of the Jaguars; Tom Heckert of the Browns; Smith of the Chargers and Graves of Arizona.

"You hope that those guys that obviously were victims of black Monday land on their feet," Rams coach Jeff Fisher said. "You've got guys that have been to Super Bowls and won championship games and all of a sudden they've forgot how to coach, I guess."

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Online: http://pro32.ap.org/poll and http://twitter.com/AP_NFL

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Hispanic Pregnancies Fall in U.S. as Women Choose Smaller Families

ORLANDO, Fla. — Hispanic women in the United States, who have generally had the highest fertility rates in the country, are choosing to have fewer children. Both immigrant and native-born Latinas had steeper birthrate declines from 2007 to 2010 than other groups, including non-Hispanic whites, blacks and Asians, a drop some demographers and sociologists attribute to changes in the views of many Hispanic women about motherhood.

As a result, in 2011, the American birthrate hit a record low, with 63 births per 1,000 women ages 15 to 44, led by the decline in births to immigrant women. The national birthrate is now about half what it was during the baby boom years, when it peaked in 1957 at 122.7 births per 1,000 women of childbearing age.

The decline in birthrates was steepest among Mexican-American women and women who immigrated from Mexico, at 25.7 percent. This has reversed a trend in which immigrant mothers accounted for a rising share of births in the United States, according to a recent report by the Pew Research Center. In 2010, birthrates among all Hispanics reached their lowest level in 20 years, the center found.

The sudden drop-off, which coincided with the onset of the recession, suggests that attitudes have changed since the days when older generations of Latinos prized large families and more closely followed Roman Catholic teachings, which forbid artificial contraception.

Interviews with young Latinas, as well as reproductive health experts, show that the reasons for deciding to have fewer children are many, involving greater access to information about contraceptives and women’s health, as well as higher education.

When Marucci Guzman decided to marry Tom Beard here seven years ago, the idea of having a large family — a Guzman tradition back in Puerto Rico — was out of the question.

“We thought one, maybe two,” said Ms. Guzman Beard, who gave birth to a daughter, Attalai, four years ago.

Asked whether Attalai might ever get her wish for a little brother or sister, Ms. Guzman Beard, 29, a vice president at a public service organization, said: “I want to go to law school. I’m married. I work. When do I have time?”

The decisions were not made in a vacuum but amid a sputtering economy, which, interviewees said, weighed heavily on their minds.

Latinos suffered larger percentage declines in household wealth than white, black or Asian households from 2005 to 2009, and, according to the Pew report, their rates of poverty and unemployment also grew more sharply after the recession began.

Prolonged recessions do produce dips in the birthrate, but a drop as large as Latinos have experienced is atypical, said William H. Frey, a sociologist and demographer at the Brookings Institution. “It is surprising,” Mr. Frey said. “When you hear about a decrease in the birthrate, you don’t expect Latinos to be at the forefront of the trend.”

D’Vera Cohn, a senior writer at the Pew Research Center and an author of the report, said that in past recessions, when overall fertility dipped, “it bounced back over time when the economy got better.”

“If history repeats itself, that will happen again,” she said.

But to Mr. Frey, the decrease has signaled much about the aspirations of young Latinos to become full and permanent members of the upwardly mobile middle class, despite the challenges posed by the struggling economy.

Jersey Garcia, a 37-year-old public health worker in Miami, is in the first generation of her family to live permanently outside of the Dominican Republic, where her maternal and paternal grandmothers had a total of 27 children.

“I have two right now,” Ms. Garcia said. “It’s just a good number that I can handle.”

“Before, I probably would have been pressured to have more,” she added. “I think living in the United States, I don’t have family members close by to help me, and it takes a village to raise a child. So the feeling is, keep what you have right now.”

But that has not been easy. Even with health insurance, Ms. Garcia’s preferred method of long-term birth control, an IUD, has been unaffordable. Birth control pills, too, with a $50 co-payment a month, were too costly for her budget. “I couldn’t afford it,” she said. “So what I’ve been doing is condoms.”

According to research by the National Latina Institute for Reproductive Health, the overwhelming majority of Latinas have used contraception at some point in their lives, but they face economic barriers to consistent use. As a consequence, Latinas still experience unintended pregnancy at a rate higher than non-Hispanic whites, according to the institute.

And while the share of births to teenage mothers has dropped over the past two decades for all women, the highest share of births to teenage mothers is among native-born Hispanics.

“There are still a lot of barriers to information and access to contraception that exist,” said Jessica Gonzáles-Rojas, 36, the executive director of the institute, who has one son. “We still need to do a lot of work.”

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DealBook Column: Hold Your Applause, Please, Until After the Toasts

Gentlemen, ladies, please take your seats.

It is time for DealBook’s annual “Closing Dinner,” where we toast — and more important, roast — the deal makers of 2012 (and some of the still-hammering-out-the-fiscal-cliff-deal makers).

This year’s dinner is in Washington so that some of esteemed attendees can run back for negotiations.

We have a number of Wall Street deal makers at the front table: Jamie Dimon, Lloyd C. Blankfein and Warren E. Buffett. They may have an easier time negotiating than some of our elected officials because, as Mr. Buffett likes to say, “My idea of a group decision is to look in the mirror.”

Across the way is Steven A. Cohen of SAC Capital. We sat him next to Preet Bharara, the United States attorney for the Southern District of New York, so they could get to know each other a little better. Steve, a little advice: don’t let Preet borrow your cellphone.

Greg Smith, the former Goldman Sachs banker who wrote a tell-all called “Why I Left Goldman Sachs,” is here. Mr. Smith managed to wangle a reported $1.5 million payday from his publisher, but his book sold poorly and his publisher was left with a huge loss. Nice to see you learned something from your years in banking, Greg.

Timothy F. Geithner and Ben S. Bernanke are sitting at the dais this year, as is Mario Draghi. Strangely, they are playing Monopoly under the table with real dollar bills. (I heard Mr. Bernanke tell Mr. Draghi, “We can always print more.”)

The board of Hewlett-Packard is at the table at the back. Senator Harry Reid and Senator Mitch McConnell, whatever you do, don’t ask Meg Whitman for pointers on how to make the numbers work.

We’re pleased that Speaker John Boehner also decided to join us this year. We had asked him to invite some other senior members of his caucus, but as you can see from the empty seats at his table, none of them were willing to join him. So we’ve stuck him next to Vikram Pandit.

Mitt Romney just arrived and is sitting at the table sponsored by the Private Equity Growth Capital Council. He is with some of his supporters, among them Leon Cooperman of Omega Advisors and the Koch Brothers. And yes, Mitt, there is a hidden video camera in the floral arrangement in front of you.

Finally, a quick thank you to the folks from Barclays and UBS. Their teams who got caught up in the Libor scandal agreed to pay for tonight’s dinner. Apparently, there is some dispute with the caterer, however, because the bankers are trying to set the rate. (Rimshot.)

And now, before the humor runs out (if it hasn’t already), onto the official toasts and roasts of 2012:

TURNAROUND OF THE YEAR Robert H. Benmosche, A.I.G.’s chief executive, take a bow. The bailout of your company at the height of the financial crisis will probably never be popular, but it will be profitable. (And it should be a bit more popular, too.)

The Treasury Department sold its last shares in the company in 2012, racking up a profit of $22.7 billion for taxpayers. Mr. Benmosche, a tough-talking executive who at one point early in his tenure at A.I.G. threatened to quit because of efforts by the government to meddle in the business, revived a company that had been left for dead. Most of the media, the pundits and the speculators got it wrong. You got it right. We do all owe you a thank you.

LEADERSHIP LESSON: JAMIE DIMON Mr. Dimon, the biggest failure of your career happened in 2012 with the loss of more than $5 billion by a group of your traders, including one known as the “London Whale.” Many C.E.O.’s would have lost their jobs and certainly would not be given a toast.

But you did something most executives would not have done: you admitted to the mistake. In an age when it’s almost de rigueur on Wall Street to hide problems, obfuscate and shade the truth, you told it how it was: “We have egg on our face, and we deserve any criticism we get.”

That’s not to say the situation was handled perfectly; the lack of details about the loss and your continued pushback against regulations raised more questions than answers. But your insistence that “We made a terrible, egregious mistake” is a lesson in leadership for your peers.

CREDIT WHERE CREDIT IS DUE: MARIO DRAGHI Mr. Draghi, the economist and former Goldman Sachs banker turned president of the European Central Bank, nearly single-handedly saved the euro zone in 2012. In a master stroke, he said: “Within our mandate, the E.C.B. is ready to do whatever it takes to preserve the euro.”

That sentence will go down in history for the confidence it inspired in the markets and in countries like Greece, Spain and Italy that were thought to be on the precipice. Through behind-the-scenes shuttle diplomacy with leaders like Angela Merkel of Germany and Mario Monti of Italy, Mr. Draghi was able to convince reluctant politicians that it was in his purview to start buying up bonds if a country needed help — and requested it. So far, his comments alone have served as a remarkable backstop; no country has sought his help.

A BOARD IN NEED OF HELP, AGAIN Bashing the board of Hewlett-Packard is becoming boring. Its members, who have routinely turned over, had another tough year.

The company’s stock fell about 45 percent. H.P. disclosed that its $11.7 billion acquisition of Autonomy, in which it paid an 80 percent premium, had turned out to be a mess (which wasn’t exactly a secret) — or worse, a fraud. But in a strange twist, perhaps trying to remove some of the blame for the disaster of a deal, the board attributed at least $5 billion of the write-down of the deal simply to accounting chicanery.

Some have questioned H.P.’s math. Perhaps some of the write-down is the result of accounting problems, but $5 billion? C’mon. Hewlett’s board, however, still has some friends: It has paid an estimated $81 million to Wall Street to help orchestrate some its failed deals in recent years.

SEEKING FACEBOOK ‘FRIENDS’ Mark Zuckerberg, Facebook’s C.E.O., has been attending our “Closing Dinner” for years. (He wore Adidas flip-flops to his first.) Back then, he was the “It” boy — the one everyone in the room wanted to “friend.” This year, after Facebook pursued its I.P.O., some investors want to “unfriend” him.

As everyone knows, the market has not been kind to Facebook shares, which were sold at $38 a share and at one point this year dropped by half. The good news is that Facebook’s shares have rebounded and are now at about $26 a share; the bad news is that long-term shareholders are still down about 30 percent.

With questions about Facebook’s privacy policies and mobile strategy still at the fore, Mr. Zuckerberg has some work to do. Hopefully, when we reconvene next year, more investors will want to sit at your table. (My apologies for sticking you next to Andrew Mason of Groupon.)

YAHOO FINALLY GETS IT RIGHT For nearly the last five years, if not decade, Yahoo had clearly lost its luster. It went through a series of C.E.O.’s, its best engineers left to work at Google and Facebook, and its stock had tanked.

Enter Daniel S. Loeb, the activist investor. He saw value where others didn’t. He also used some clever powers of persuasion to get on the company’s board: He ousted Scott Thompson, Yahoo’s new chief (remember him?) for lying on his résumé by saying he had a computer science degree when, in truth, he had an accounting degree. That sleuthing, and the ensuing embarrassment for the board, gave Mr. Loeb an opening to get his slate of directors on the board.

But most important, once he got on the board, he did something nobody expected: He hired Marissa Mayer, a true Silicon Valley star from Google, to run the company. The jury is still out on the company’s future, but for the first time in ages, people are talking about the company as if it actually has a future. Kudos.

A version of this article appeared in print on 01/01/2013, on page B1 of the NewYork edition with the headline: Hold Your Applause Until After The Toasts.

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Envoy to Syria Warns of Descent to Warlord ‘Hell’

BEIRUT, Lebanon — The international envoy to Syria, Lakhdar Brahimi, drew a grim portrait on Sunday of the country’s future in the absence of a political solution, warning of a state carved up by warlords and a death toll that would rapidly surge, while conceding that there was little sign that the antagonists intended to negotiate.

Muzaffar Salman/Reuters

A rebel soldier firing at pro-government forces on Sunday in Aleppo, Syria. In Homs, civilians fled a district torn by fighting.

At a news conference at Arab League headquarters in Cairo, Mr. Brahimi said the violence, which has already killed tens of thousands of people, could claim 100,000 lives over the next year.

“People are talking about a divided Syria being split into a number of small states like Yugoslavia,” he said.

“This is not what is going to happen. What will happen is Somalization — warlords,” Mr. Brahimi said, according to a transcript of his remarks. Without a peace deal, he added, Syria would be “transformed into hell.”

Mr. Brahimi’s comments reflected a deepening pessimism after his apparently unsuccessful attempt over the past week to mediate the crisis by shuttling between opposition figures and the Syrian president, Bashar al-Assad. The envoy indicated that Mr. Assad had made no response to peace proposals, which included a plan to create a transitional government. In another sign of the impasse, the leader of a large opposition coalition all but rebuffed an invitation by Russia, one of Syria’s closest allies, to discuss solutions to the crisis.

On Saturday, nearly a week after Mr. Brahimi traveled to Damascus, the Syrian capital, Russia’s foreign minister said there was “no possibility” of persuading Mr. Assad to leave the country, which Syrian opposition groups have insisted is a precondition for any peace talks.

The envoy’s warnings came as activists in Syria reported a new exodus of civilians from the central city of Homs, adding untold numbers of internal refugees to the millions Mr. Brahimi said had already been displaced by the war. Over the past three days, hundreds and perhaps thousands of residents have fled fighting in the Deir Ba’alba district of Homs after government troops stormed the restive neighborhood, according to activists in Talbiseh, north of Homs, where many of the refugees were being received.

Some residents have blamed rebel fighters for the incursion, saying the army moved in after the insurgents inexplicably quit the neighborhood. In Syria’s other cities, residents have frequently been angered by the tendency of rebel fighters to occupy a neighborhood and then attack government troops before abruptly withdrawing and leaving civilians to bear the brunt of the army’s brutal retaliation.

It was unclear how many people had been killed in the fighting in the district. One young witness said he believed a neighbor had been killed. Two videos purportedly from Deir Ba’alba showed the bodies of about a dozen men who had apparently been executed with gunshots to the head. But there was no confirmation of claims made on Saturday by an antigovernment group, the Local Coordination Committees, that hundreds had been killed.

One resident of Deir Ba’alba, a 14-year-old boy reached by Skype in Talbiseh, said he had fled with his parents at 1:30 a.m. Sunday. The family had grown accustomed to sporadic fighting and gunfire, and usually fled to a relative’s house elsewhere in Homs. “But this time, it was heavy shelling,” the teenager said. “I could hear the asphalt cracking under the tanks.”

As he and his family left, the boy saw the body of a neighbor, a woman, lying on the ground, he said. His mother tried to convince the boy that the neighbor was alive. “I’m sure I saw her dead,” he said. “Her neck was bleeding. She was unveiled. It was the first time I saw our neighbor unveiled.”

One fighter from Homs said the retreat had come after the rebel military council for Homs failed to provide ammunition for its fighters in Deir Ba’alba. “They asked for supplies 48 hours before the invasion,” the fighter said. “Their call was not answered. I don’t know why.”

Civilians had begged the fighters not to leave, or at least to leave their weapons behind, two fighters said. Another fighter from Homs, calling the withdrawal “suicidal,” said the rebels had left civilians “to face their destiny alone.”

“We don’t know what happened to them,” he said.

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Bears fire coach Lovie Smith after 9 seasons

LAKE FOREST, Ill. (AP) — The Chicago Bears fired coach Lovie Smith on Monday after the team missed the playoffs for the fifth time in six seasons.

Smith was informed of the decision by general manager Phil Emery on the day after the Bears beat Detroit to finish 10-6 but still didn't make the playoffs.

Smith led the Bears to a Super Bowl, but also saw his team collapse in the second half of the past two seasons. Hired in 2004, Smith led the Bears to three division titles, two NFC title games and a 2007 Super Bowl appearance in his nine seasons. His record is 81-63, and he leaves with one year left on his contract.

The Bears scheduled a news conference Tuesday to discuss the move.

Even though Chicago closed with a win, the Bears needed a loss by Minnesota to get into the playoffs. The Vikings, though, beat Green Bay to clinch a postseason spot, leaving Chicago as the second team since the postseason expanded to 12 teams to miss out after a 7-1 start. The other was Washington in 1996.

Smith's record ranks third on the Bears' all-time list, behind George Halas and Mike Ditka.

The highlight of his tenure was the run to the title game that ended with a loss to the Indianapolis Colts. It was the first time two black coaches met for the championship, with Smith going against his mentor Tony Dungy.

The Bears made the playoffs just three times and posted three postseason victories under Smith. The 2010 team beat Seattle after the Seahawks won their division with a 7-9 record, but the Bears lost to Green Bay in the NFC title game at Soldier Field.

There was speculation Smith would be let go following the 2011 team's collapse, but he got one more year while general manager Jerry Angelo was fired.

Ultimately, the struggles on offense did him in.

Known for solid defenses, Smith oversaw a unit that was consistently effective and at times ranked among the league's best with stars such as Brian Urlacher, Lance Briggs and later Julius Peppers. Smith emphasized taking the ball away from the opposition, and no team did it more than the Bears with 310 during his tenure.

But on the other side, it was a different story.

Smith went through four offensive coordinators in Terry Shea, Ron Turner, Mike Martz and Mike Tice. He never could find the right formula, even as the Bears acquired stars such as quarterback Jay Cutler and receiver Brandon Marshall over the years.

The offensive line has struggled in a big way over the past few seasons after age took its toll on a group that was a strength during the 2005 and 2006 playoff seasons. The Bears were never able to replenish, spending first-round picks on Chris Williams (2008) and Gabe Carimi (2011) that did not pan out.

Williams had his contract terminated in October, ending a disappointing run, and Carimi struggled this season after missing most of his rookie year with a knee injury.

While Angelo took the fall after last season, Smith was not without blame in the personnel issues over the years. He pushed to bring in former Rams offensive lineman Orlando Pace and safety Adam Archuleta, players who succeeded in St. Louis when Smith was the defensive coordinator there but were busts with the Bears.

He had no bigger supporter than team matriarch Virginia McCaskey, but the fans seemed split on him. To some, he was a picture of calm, a coach who never lost his composure and never criticized his players in public, the anti-Ditka if you will.

History suggests fans who are clamoring for a high-profile replacement such as Bill Cowher or Jon Gruden might be disappointed. The last time the Bears went with an experienced NFL head coach was when Halas returned to the sideline in 1958.

They might, however, go with an offensive-minded coach for the first time since Mike Ditka was fired after the 1992 season, given the issues in that area.

That the Bears would be in this spot seemed unthinkable after they ripped Tennessee 51-20 on Nov. 4. They were sailing along at 7-1 and eyeing a big playoff run after collapsing the previous season, with the defense taking the ball away and scoring at an eye-opening rate to compensate for a struggling offense, but the schedule took a tougher turn.

They dropped back-to-back games to Houston and San Francisco and five of six in all before closing out with wins at Arizona and Detroit. Injuries mounted along the way, and what looked like a playoff run slipped from their grasp, just as it did after a promising start in 2011.

That year, they won seven of their first 10 only to wind up at 8-8 after a monumental collapse sparked by a season-ending injury to Cutler.

While Angelo was fired, Smith got spared and Emery took the job with a mandate to keep the coach at least one more year.

He quickly went to work retooling the roster, landing Marshall in a blockbuster trade with Miami that reunited Cutler with his favorite target in Denver.

He also added depth in other areas, bringing in Jason Campbell as the backup quarterback after Caleb Hanie failed the previous season and teaming running back Michael Bush in the backfield with Matt Forte.

All those moves sent expectations soaring. The results were awfully familiar, though.

Now, Smith's out of a job.

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Online: http://pro32.ap.org/poll and http://twitter.com/AP_NFL

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Well: Exercise and the Ever-Smarter Human Brain

Anyone whose resolve to exercise in 2013 is a bit shaky might want to consider an emerging scientific view of human evolution. It suggests that we are clever today in part because a million years ago, we could outrun and outwalk most other mammals over long distances. Our brains were shaped and sharpened by movement, the idea goes, and we continue to require regular physical activity in order for our brains to function optimally.

Phys Ed

Gretchen Reynolds on the science of fitness.

The role of physical endurance in shaping humankind has intrigued anthropologists and gripped the popular imagination for some time. In 2004, the evolutionary biologists Daniel E. Lieberman of Harvard and Dennis M. Bramble of the University of Utah published a seminal article in the journal Nature titled “Endurance Running and the Evolution of Homo,” in which they posited that our bipedal ancestors survived by becoming endurance athletes, able to bring down swifter prey through sheer doggedness, jogging and plodding along behind them until the animals dropped.

Endurance produced meals, which provided energy for mating, which meant that adept early joggers passed along their genes. In this way, natural selection drove early humans to become even more athletic, Dr. Lieberman and other scientists have written, their bodies developing longer legs, shorter toes, less hair and complicated inner-ear mechanisms to maintain balance and stability during upright ambulation. Movement shaped the human body.

But simultaneously, in a development that until recently many scientists viewed as unrelated, humans were becoming smarter. Their brains were increasing rapidly in size.

Today, humans have a brain that is about three times larger than would be expected, anthropologists say, given our species’ body size in comparison with that of other mammals.

To explain those outsized brains, evolutionary scientists have pointed to such occurrences as meat eating and, perhaps most determinatively, our early ancestors’ need for social interaction. Early humans had to plan and execute hunts as a group, which required complicated thinking patterns and, it’s been thought, rewarded the social and brainy with evolutionary success. According to that hypothesis, the evolution of the brain was driven by the need to think.

But now some scientists are suggesting that physical activity also played a critical role in making our brains larger.

To reach that conclusion, anthropologists began by looking at existing data about brain size and endurance capacity in a variety of mammals, including dogs, guinea pigs, foxes, mice, wolves, rats, civet cats, antelope, mongooses, goats, sheep and elands. They found a notable pattern. Species like dogs and rats that had a high innate endurance capacity, which presumably had evolved over millenniums, also had large brain volumes relative to their body size.

The researchers also looked at recent experiments in which mice and rats were systematically bred to be marathon runners. Lab animals that willingly put in the most miles on running wheels were interbred, resulting in the creation of a line of lab animals that excelled at running.

Interestingly, after multiple generations, these animals began to develop innately high levels of substances that promote tissue growth and health, including a protein called brain-derived neurotrophic factor, or BDNF. These substances are important for endurance performance. They also are known to drive brain growth.

What all of this means, says David A. Raichlen, an anthropologist at the University of Arizona and an author of a new article about the evolution of human brains appearing in the January issue of Proceedings of the Royal Society B, is that physical activity may have helped to make early humans smarter.

“We think that what happened” in our early hunter-gatherer ancestors, he says, is that the more athletic and active survived and, as with the lab mice, passed along physiological characteristics that improved their endurance, including elevated levels of BDNF. Eventually, these early athletes had enough BDNF coursing through their bodies that some could migrate from the muscles to the brain, where it nudged the growth of brain tissue.

Those particular early humans then applied their growing ability to think and reason toward better tracking prey, becoming the best-fed and most successful from an evolutionary standpoint. Being in motion made them smarter, and being smarter now allowed them to move more efficiently.

And out of all of this came, eventually, an ability to understand higher math and invent iPads. But that was some time later.

The broad point of this new notion is that if physical activity helped to mold the structure of our brains, then it most likely remains essential to brain health today, says John D. Polk, an associate professor of anthropology at the University of Illinois at Urbana-Champaign, and co-author, with Dr. Raichlen, of the new article.

And there is scientific support for that idea. Recent studies have shown, he says, that “regular exercise, even walking,” leads to more robust mental abilities, “beginning in childhood and continuing into old age.”

Of course, the hypothesis that jogging after prey helped to drive human brain evolution is just a hypothesis, Dr. Raichlen says, and almost unprovable.

But it is compelling, says Harvard’s Dr. Lieberman, who has worked with the authors of the new article. “I fundamentally agree that there is a deep evolutionary basis for the relationship between a healthy body and a healthy mind,” he says, a relationship that makes the term “jogging your memory” more literal than most of us might have expected and provides a powerful incentive to be active in 2013.

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This post has been revised to reflect the following correction:

Correction: December 31, 2012

An earlier version of this article misstated the name of a scientific journal. It is the Proceedings of the Royal Society B, not the Proceedings of the Royal Society Biology.

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Chinese Regulator’s Family Profited From Stake in Insurer

The New York Times

The Ping An International Finance Center, being built in Shenzhen. Ping An is among the world’s biggest financial institutions.

SHANGHAI — Relatives of a top Chinese regulator profited enormously from the purchase of shares in a once-struggling insurance company that is now one of China’s biggest financial powerhouses, according to interviews and a review of regulatory filings.

The regulator, Dai Xianglong, was the head of China’s central bank and also had oversight of the insurance industry in 2002, when a company his relatives helped control bought a big stake in Ping An Insurance that years later came to be worth billions of dollars. The insurer was drawing new investors ahead of a public stock offering after averting insolvency a few years earlier.

With growing attention on the wealth amassed by families of the politically powerful in China, the investments of Mr. Dai’s relatives illustrate that the riches extend beyond the families of the political elites to the families of regulators with control of the country’s most important business and financial levers. Mr. Dai, an economist, has since left his post with the central bank and now manages the country’s $150 billion social security fund, one of the world’s biggest investment funds.

How much the relatives made in the deal is not known, but analysts say the activity raises further doubts about whether the capital markets are sufficiently regulated in China.

Nicholas C. Howson, an expert in Chinese securities law at the University of Michigan Law School, said: “While not per se illegal or even evidence of corruption, these transactions feed into a problematic perception that is widespread in the P.R.C.: the relatives of China’s highest officials are given privileged access to pre-I.P.O. properties.” He was using the abbreviation for China’s official name, the People’s Republic of China.

The company that bought the Ping An stake was controlled by a group of investment firms, including two set up by Mr. Dai’s son-in-law, Che Feng, as well as other firms associated with Mr. Che’s relatives and business associates, the regulatory filings show.

The company, Dinghe Venture Capital, got the shares for an extremely good price, the records show, paying a small fraction of what a large British bank had paid per share just two months earlier. The company paid $55 million for its Ping An shares on Dec. 26, 2002. By 2007, the last time the value of the investment was made public, the shares were worth $3.1 billion.

In its investigation, The New York Times found no indication that Mr. Dai had been aware of his relatives’ activities, or that any law had been broken. But the relatives appeared to have made a fortune by investing in financial services companies over which Mr. Dai had regulatory authority.

In another instance, in November 2002, Dinghe acquired a big stake in Haitong Securities, a brokerage firm that also fell under Mr. Dai’s jurisdiction, according to the brokerage firm’s Shanghai prospectus.

By 2007, just after Haitong’s public listing in Shanghai, those shares were worth about $1 billion, according to public filings. Later, between 2007 and 2010, Mr. Dai’s wife, Ke Yongzhen, was chairwoman on Haitong’s board of supervisors.

A spokesman for Mr. Dai and the National Social Security Fund did not return phone calls seeking comment. A spokeswoman for Mr. Che, the son-in-law, denied by e-mail that he had ever held a stake in Ping An. The spokeswoman said another businessman had bought the Ping An shares and then, facing financial difficulties, sold them to a group that included Mr. Che’s friends and relatives, but not Mr. Che.

The businessman “could not afford what he has created, so he had to sell his shares all at once,” the spokeswoman, Jenny Lau, wrote in an e-mail.

The corporate records reviewed by The Times, however, show that Mr. Che, his relatives and longtime business associates set up a complex web of companies that effectively gave him and the others control of Dinghe Venture Capital, which made the investments in Ping An and Haitong Securities. The records show that one of the companies later nominated Mr. Che to serve on the Ping An board of supervisors. His term ran from 2006 to 2009.

The Times reported last month that another investment company had also bought shares in Ping An Insurance at an unusually low price on the same day in 2002 as Dinghe Venture Capital. That company, Tianjin Taihong, was later partly controlled by relatives of Prime Minister Wen Jiabao, then serving as vice premier with oversight of China’s financial institutions. In late 2007, the shares Taihong bought in Ping An were valued at $3.7 billion.

The investments by Dinghe and Taihong are significant in part because by late 2002, Beijing regulators had granted Ping An an unusual waiver to rules that would have forced the insurer to sell off some divisions. Throughout the late 1990s, the company was fighting rules that would have required a breakup, a move that Ping An executives worried could lead to bankruptcy.

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Letter From Washington: Lessons From the 2012 U.S. Election

WASHINGTON — The 2012 U.S. elections, though not seminal, revealed much about the nature and direction of U.S. politics.

A divided government may be ingrained: At the presidential level, Democrats start with a decided advantage. Changing demographics — more Hispanics and other minorities solidly behind the party; women and young voters moving that way and forming hard-to-break voting habits — cut the Democrats’ way.

The electoral map that decides U.S. presidential contests tilts Democratic. President Barack Obama won the national popular vote by 3.7 percentage points, and carried the electoral map — the number of electors from each state is based indirectly on population — 332 to 206. If you took 1.9 percentage points from Mr. Obama and added them to Mitt Romney’s tally, the Republican would have won the popular vote by more than 125,000 votes. Yet if that formula were then applied to every state in the country, the only ones that would change would be Florida and Ohio. Mr. Obama would have lost the popular vote but would still have won the Electoral College vote, 285 to 253, and thus the presidency.

This is why some states that are reliably Democratic at the presidential level and where Republicans now control the statehouses are trying to change the Electoral College system. Each state controls its own rules. Only two, Maine and Nebraska, award electors by congressional district; everywhere else, it’s winner-takes-all.

Republicans are pondering a shift to the approach used in Maine and Nebraska. They see a possible test case in Pennsylvania, where Mr. Obama won the popular vote by more than five percentage points, rolling up huge margins in Philadelphia and its suburbs and in Pittsburgh. Mr. Romney, however, carried 13 of the 18 congressional districts. If this new system were in effect, the Republicans would have gotten 13 of the state’s 20 electoral votes while getting trounced in the popular vote. If this occurred in mainly Republican states, it would erase the Democrats’ Electoral College advantage.

In elections for the House of Representatives, Republicans already have a structural advantage. Democratic voters, especially minorities, tend to be bunched into a relatively small number of districts.

“The high-density Democratic population makes it more difficult for Democrats to create more competitive districts,” said Nathan Gonzales, congressional analyst for the Rothenberg Political Report, a nonpartisan newsletter on U.S. politics.

It’s this bunching, more than any redistricting edge, that enabled Republicans to retain a lead of 234 seats to 201 in the House of Representatives this year even though Democrats received a million more votes over all in House races. There is little to suggest this advantage will lessen in the years ahead.

Conventions matter more than debates: The news media treat the national political conventions as irrelevant dinosaurs; the presidential debates are depicted as the Super Bowl or World Cup of politics.

It didn’t work out that way this year. The conventions mattered more. Mr. Romney and the Republicans blew a chance at the convention in Tampa, Florida, to reset his candidacy. At their convention in Charlotte, North Carolina, the Democrats stepped up to the challenge, especially with a powerful speech by former President Bill Clinton that set the basis for more positive public attitudes about the U.S. economy.

Mr. Obama’s disastrous performance in his first debate with Mr. Romney certainly mattered, though the duration of the Republican nominee’s bounce was exaggerated. Before that debate, the president was about four points ahead nationally; that was close to his final margin.

Moving to the center is tough in the media age: Richard M. Nixon advised Republicans to run to the right in the primaries and to quickly move to the center in the general election. This formula worked as recently as 1980 for Ronald Reagan. For Democrats, the formula is to run to the left in the primaries and to move to the center in the general election.

This is much harder to do today with the omnipresent news media tracking and assembling every public pronouncement and policy change. Mr. Romney tried to pivot after the primaries; there is little evidence that it worked well. He couldn’t escape earlier assertions that had alienated Hispanics (calling for undocumented workers to choose self-deportation) or women (boasting that he would end U.S. government funding for Planned Parenthood).

There are polls — and polls: Polls done on the cheap, automatic phone calls, some online surveys and partisan polls all missed the mark. More professional polls, with telephone interviews, conducted for the news media and other sources, were accurate in most instances.

Campaigns matter: Improving attitudes about the economy and, to a small degree, the president’s response to Hurricane Sandy, moved the needle in the closing weeks. Mr. Obama was indisputably a better political candidate.

The contrasting campaigns widened the margin. Post-election forums at Harvard University and the University of Pennsylvania, and the campaign e-book “The End of the Line,” by Jonathan Martin and Glenn Thrush of the Web site Politico, illustrated the Obama campaign’s supremacy on tactics: polling, the use of digital and social media, advertising, identifying voters and getting them to the polls.

The biggest advantage was overarching, strategic. “We knew who our guy was and where the country was,” said Stephanie Cutter, Mr. Obama’s deputy campaign manager. “They didn’t seem to have a sense of either.”

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Michigan State edges TCU 17-16 in BWW Bowl

TEMPE, Ariz. (AP) — Michigan State labored on offense throughout the first half, unable to get anything going on the ground, in the air, anywhere.

For a team that had lost five games by a combined 13 points during the regular season, it was starting to feel familiar.

The Spartans changed their luck by turning to brutally effective running back Le'Veon Bell in the second half, setting up Dan Conroy for another game-winning kick in a bowl game.

Bell ran for 145 yards and a fourth-quarter touchdown, Conroy kicked a 47-yard field goal with 1:01 left and Michigan State rallied to beat Texas Christian 17-16 in the Buffalo Wild Wings Bowl on Saturday night.

"With so many close games and losing like we did during the season, to have one go our way was definitely sweet," Conroy said.

It wasn't always pretty for the Spartans.

Michigan State (7-6) managed 76 yards of offense during the first two quarters as TCU bottled up Bell.

The 237-pound junior started to wear down the Horned Frogs in the second half, grinding out 107 of his yards on a 32-carry night.

Behind Bell, the Spartans went on the longest drive in their bowl history in the third quarter, marching 90 yards to set up freshman Connor Cook's 15-yard touchdown pass to Aaron Burbridge.

Michigan State then recovered a muffed punt by TCU's Skye Dawson at the 4-yard line midway through the fourth and Bell scored two plays later by racing around left end for a 14-13 lead.

TCU (7-6) still had a little life after blowing a 13-point halftime lead, moving just far enough to set up Jaden Oberkrom for the longest field goal in the bowl's history, a 53-yarder that put the Horned Frogs up 16-14 with 2:42 left.

They just left Michigan State too much time.

Starting at their own 25-yard line, the Spartans moved 45 yards in eight plays, setting up Conroy for his second game-winner in a bowl after beating Georgia with a 28-yarder in the third overtime of the 2012 Outback Bowl.

Michigan State's defense held after that, sending the Spartans to their second straight bowl win after three consecutive losses.

"There was no doubt in my mind that after so many losses in similar fashion that we were going to come out on top in this one," Spartans linebacker Max Bullough said.

The Horned Frogs shut down Michigan State's offense in the first half and did just enough when they had the ball to put together three scoring drives.

In the second half, TCU couldn't get anything going against the Spartans' defense — 84 total yards — and its defense gave up the long scoring drive in the third quarter, along with the game-winner in the fourth.

Trevone Boykin threw for 201 yards and an interception on 13-of-29 passing for the Horned Frogs.

"A little bit empty feeling inside because we felt like we left a lot on the field," TCU coach Gary Patterson said.

TCU and Michigan State came to the desert with an awful lot of similarities.

The Horned Frogs opened their first season in the Big 12 with four straight wins before losing four of their final six games. Michigan State started 4-2, then lost four of six down the stretch.

Michigan State had the nation's fourth-best defense and was 10th in scoring defense during the regular season. TCU was 18th in total defense and 10th against the run.

Michigan State quarterback Andrew Maxwell was up-and-down in his first season as Kirk Cousins' replacement, throwing 13 touchdown passes and nine interceptions. Boykin took over after four games for Casey Pachall, who was suspended and later left the team, and threw for 15 touchdowns and nine interceptions.

The biggest difference between the teams was Bell.

He ranked third nationally with 137.3 yards rushing per game and had 1,648 on the season, second-most in Michigan State history and 242 fewer than TCU had as a team.

Early on, the Horned Frogs gave him nowhere to go.

Filling holes inside and stringing plays out toward the sidelines, TCU stuffed the bruising Bell on nearly every touch, holding him to 38 yards on 11 carries in the first half.

Of course, it didn't seem to matter what Michigan State did. The Spartans had 29 yards on 12 plays in the first quarter and weren't a whole lot better in the second, with Maxwell throwing two near-interceptions on consecutive passes and an ill-advised trick play that probably should have resulted in a turnover, too.

The Spartans still seemed to be stuck in the ruts in the third quarter before grinding out a 14-play scoring drive led by Cook, who replaced Maxwell for the second time in the game. They had their biggest play on a floating pass from Bell to fullback TyQuan Hammock (29 yards), then Cook threw his first career touchdown pass, a 15-yarder to Burbridge on a crossing route that cut TCU's lead to 13-7.

"I thought Connor did a good job on the 90-yard drive, gave us a little momentum," Spartans coach Mark Dantonio said.

TCU didn't exactly have its way with Michigan State's defense in the first half and missed some chances to build a bigger lead.

The Frogs started gashing the Spartans for decent-sized chunks with their option midway through the first quarter, setting up Matthew Tucker's 4-yard touchdown on an end-around.

Boykin had an impressive off-the-back-foot throw to freshman Kolby Listenbee for 59 yards on the last play of the first quarter and nearly had a 19-yard touchdown pass to open the second, but LaDarius Brown was bumped and dropped the ball in the end zone. Oberkrom followed with a 47-yard field goal and added another from 31 yards after Boykin hit Josh Boyce on a 61-yard pass to put TCU up 13-0 at halftime.

The Frogs couldn't keep it up in the second half.

With Michigan State clogging the running lanes and chasing Boykin around, TCU had 30 yards of offense in the third quarter and continued to struggle in the fourth. The Horned Frogs did manage the short scoring drive to set up Oberkrom's late field goal, but ended up going backward on their final drive after Conroy's kick.

"What I thought happened in the third quarter was Michigan State dialed up the heat and we didn't have an answer," Patterson said.

Michigan State did — for one of the few times this season.

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