Tiger headed toward another win at Torrey

SAN DIEGO (AP) — The Pacific air was so cold at the end of a 10-hour day at Torrey Pines that Tiger Woods thrust both hands in the front pockets of his rain pants as he walked off the course at the Farmers Insurance Open.

It was a fitting image. Woods made a marathon day look like he was out for a stroll.

Staked to a two-shot lead going into the third round of this fog-delayed tournament, Woods drove the ball where he was aiming and was hardly ever out of position. Even with a bogey on the final hole — the easiest on the back nine — Woods still had a 3-under 69 and expanded his lead by two shots.

In the seven holes he played in the fourth round later Sunday afternoon, Woods hit the ball all over the course and still made three birdies to add two more strokes to his lead.

Thanks to the fog that wiped out an entire day of golf on Saturday, the Farmers Insurance Open didn't stand a chance of finishing on Sunday.

Woods just made it look like it was over.

He had a six-shot lead with 11 holes to play going into the conclusion of the final round on Monday. The two guys chasing him were Brandt Snedeker, the defending champion, and Nick Watney, who won at Torrey Pines in 2008. Neither was waving a white flag. Both understood how much the odds were stacked against them.

"I've got a guy at the top of the leaderboard that doesn't like giving up leads," Snedeker said. "So I have to go catch him."

"All we can do tomorrow is go out and try to make him think about it a little bit and see what happens," Watney said.

And then there was Erik Compton, a two-time heart transplant recipient who had a birdie-eagle finish in the third round that put him in third place through 54 holes, still five shots behind Woods. Someone asked Compton about trying to chase Woods. He laughed.

"I'm trying to chase myself," he said.

Woods was at 17-under par for the tournament, and more than just a six-shot lead was in his corner.

He finished the third round at 14-under 202, making it the 16th time on the PGA Tour that he had at least a four-shot lead going into the final round. His record on the PGA Tour with the outright lead after 54 holes is 38-2, the exceptions being Ed Fiori in 1996 when Woods was a 20-year-old rookie and Y.E. Yang in the 2009 PGA Championship.

Woods attributed his big lead to the "whole package."

"I've driven the ball well, I've hit my irons well, and I've chipped and putted well," he said. "Well, I've hit good putts. They all haven't gone in."

Woods has a good history of Monday finishes, starting with Torrey Pines. It was on this course along the coast north of La Jolla that Woods won a 19-hole playoff against Rocco Mediate to capture the 2008 U.S. Open for his 14th major.

He also won the Pebble Beach National Pro-Am on a Monday in 2000 when he rallied from seven shots behind with seven holes to play. He won his lone title in The Players Championship on a Monday, along with a five-shot win in the Memorial in 2000, and a scheduled Monday finish in the Deutsche Bank Championship outside Boston.

Woods even gets to sleep in.

A Monday finish because of weather typically resumes in the morning so players can get to the next tournament. CBS Sports, however, decided it wanted to televise the conclusion, and so play won't begin until 2 p.m. EST. That decision might have been based on Woods being headed toward victory — just a hunch.

Woods already has won seven times at Torrey Pines, including the U.S. Open. That matches his PGA Tour record at Bay Hill and Firestone (Sam Snead won the Greensboro Open eight times, four each on a different course).

The tournament isn't over, and Woods doesn't see it that way.

"I've got to continue with executing my game plan. That's the idea," he said. "I've got 11 holes to play, and I've got to play them well."

He seized control with his 69 in the third round that gave him a four-shot lead, and he might have put this away in the two hours he played before darkness stopped play.

He badly missed the first fairway to the left, but had a gap through the Torrey pines to the green and had a two-putt par. He missed his next shot so far to the left that the ball wound up in the first cut of the adjacent sixth fairway. He still managed a simple up-and-down for par.

After a 10-foot birdie on the par-3 third, Woods couldn't afford to go left off the tee again because of the PGA Tour's largest water hazard — the Pacific Ocean. So he went miles right, beyond a cart path, a tree blocking his way to the green. He hit a cut shot that came up safely short of the green, and then chipped in from 40 feet for birdie.

"I was able to play those holes in 2-under par," Woods said. "And then I hit three great drives right in a row."

One of them wasn't that great — it was in the right rough, the ball so buried that from 214 yards that Woods hit a 5-wood. It scooted down the fairway and onto the green, setting up a two-putt birdie the stretched his lead to six shots. And after another good drive, the horn sounded to stop play. Because it was due to weather, Woods was able to finish the hole, and he two-putted for par.

Eleven holes on Monday were all that were keeping him from his 75th career win on the PGA Tour, and delivering a message to the rest of golf that there could be more of this to follow no matter what the golf course.

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Recipes for Health: Gluten-Free Banana Chocolate Muffins

Andrew Scrivani for The New York Times

My son Liam still doesn’t know that the muffins he has been devouring all week are gluten-free. I am a big believer that there is no need to forego gluten unless you are truly gluten intolerant; indeed, nutritionists are concerned that a gluten-free diet can be lacking in essential nutrients and digestive enzymes. But I have a sister who is gluten intolerant, so this year I finally made some forays into gluten-free baking in preparation for her annual visit. When she comes I make sure to pick up plenty of gluten-free pasta and bread for her, and we go to holiday parties armed with gluten-free crackers so she doesn’t have to forego hors d’oeuvres.

This year I decided to experiment with gluten-free pastries. I substituted a commercial gluten-free flour mix for all-purpose flour in a pâte sablée recipe and the resulting cookies and tart shells had a wonderful texture – no threat of toughening the dough by working the gluten too much. But I wasn’t crazy about the flavor because the commercial mix I used had a fair amount of bean flour in it and it tasted too strong.

So I put together my own gluten-free flour mix, one without bean flour, and turned to America’s favorite Gluten-Free Girl, Shauna James Ahem for guidance. I was already thinking about making muffins and I wanted a mix that could replace the whole wheat flour I usually use in conjunction with other grains or flours. Her formula for a whole-grain flour mix is simple – 70 percent ground gluten-free grain like rice flour, millet flour, buckwheat flour or teff (the list on her site is a long one) and 30 percent starch like potato starch, cornstarch or arrowroot. For this week’s recipes, I used what I had, which was brown rice flour, potato starch and cornstarch – 20 percent potato starch and 10 percent cornstarch -- and that’s the basis for the nutritional analyses of this week’s recipes. I used this mix in conjunction with a gluten-free meal or flour, so the amount of pure starch in the batters is much less than 30 percent.

When you bake anything it is much simpler and results are more consistent if you use grams and scale your ingredients. This is especially true with gluten-free baking, since you are working with grain and starch formulas. Digital scales are not expensive and I urge you to switch over to this method if you like to bake. I have given approximate cup measures so the recipes will work both ways, but scaling is more accurate.

Gluten-Free Banana Chocolate Muffins

These dark chocolate muffins taste more extravagant than they are. Cacao – raw chocolate -- is considered by many to be a “super food.” It is high in antioxidants and an excellent source of magnesium, iron, chromium, manganese, zinc, and copper. It is also a good source of omega-6 fatty acids and vitamin C.

75 grams (approximately 1/2 cup) buckwheat flour

75 grams (approximately 3/4 cup) almond powder (also known as almond flour)

140 grams (approximately 1 cup) whole grain or all-purpose gluten-free flour mix*

32 grams (approximately 6 tablespoons) dark cocoa powder

10 grams (2 teaspoons) baking powder

5 grams (1 teaspoon) baking soda

3.5 grams (rounded 1/2 teaspoon) salt

100 grams (approximately 1/2 cup) raw brown sugar or packed light brown sugar

2 eggs

75 grams (1/3 cup) canola or grape seed oil

120 grams (1/2 cup) plain low-fat yogurt or buttermilk

5 grams (1 teaspoon) vanilla extract

330 grams ripe bananas (peeled weight), about 3 medium, mashed (1 1/4 cups)

115 grams (about 2/3 cup) semi-sweet or bittersweet chocolate chips or chopped bittersweet chocolate

*For the gluten-free flour mix I used 98 grams (about 2/3 cup) rice flour and 42 grams -- about 1/3 cup -- of a mix of cornstarch and potato starch)

1. Preheat the oven to 350 degrees. Oil or butter muffin tins. Sift the dry ingredients into a large bowl. Pour in any bits that remain in the sifter.

2. In another large bowl or in the bowl of a standing mixer fitted with the whip attachment beat together the oil and sugar until creamy. Beat in the eggs and beat until incorporated, then beat in the yogurt or buttermilk, the vanilla and the mashed bananas. Add the dry ingredients and mix at low speed or whisk gently until combined. If using a mixer, scrape down the sides of the bowl and the beaters. Fold in the chocolate chips.

3. Using a spoon or ice cream scoop, fill muffin cups to the top. Place in the oven and bake 30 minutes, until a muffin springs back lightly when touched. Remove from the heat and if the muffins come out of the tins easily, remove from the tins and place on a rack. I like these best served warm, but if they don’t release easily allow them to cool, then remove from the tins.

Yield: 16 muffins (1/3 cup capacity)

Advance preparation: These keep for a couple of days out of the refrigerator, for a few more days in the refrigerator, and for a few months in the freezer.

Nutritional information per serving: 217 calories; 10 grams fat; 2 grams saturated fat; 2 grams polyunsaturated fat; 3 grams monounsaturated fat; 24 milligrams cholesterol; 29 grams carbohydrates; 2 grams dietary fiber; 251 milligrams sodium; 4 grams protein

Martha Rose Shulman is the author of “The Very Best of Recipes for Health.”

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Media Decoder Blog: Dodgers, Signing Lucrative TV Deal, Plan to Start Regional Sports Network

The owners of the Los Angeles Dodgers said Monday that they intended to start a regional sports network in southern California, confirming weeks of reports about the team’s plans.

The network, to be named SportsNet LA, will be backed by Time Warner Cable, one of the main television distributors in the region, with a commitment of $7 billion to $8 billion over the next 25 years. The price tag, though not made public by the parties, was confirmed by a person with direct knowledge of the deal. Analysts said it was the most lucrative television deal for a single team in sports history.

Time Warner Cable will carry the Dodgers network and will be in charge of convincing others to carry it, as well. In exchange, Time Warner Cable will keep all the advertising revenue that it sells for the network. The Dodgers owners said in a news release on Monday that SportsNet LA would carry all the team’s games and “comprehensive behind-the-scenes Dodger programming.”

The multibillion-dollar deal with the Dodgers seemingly flies in the face of Time Warner Cable’s public statements about tamping down on the rising costs of programming. SportsNet LA is likely to amount to $4 to $5 a month per subscriber in southern California, and some of that cost will be passed on subscribers through their monthly cable bills, with Time Warner Cable also absorbing some of the cost.

But Time Warner Cable says that doing business directly with the Dodgers cuts out the middleman, in this case Fox Sports, which was also bidding for rights to the Dodgers games. The company said the same thing when it outbid Fox to carry Los Angeles Lakers games in 2011, a 20-year deal valued at $3 billion.

“This deal, like our Lakers’ deal, furthers our efforts to attain greater certainty and control over local and regional sports programming costs,” David Rone, the president of Time Warner Cable Sports, said of the Dodgers agreement in a statement.

Fox Sports, owned by the News Corporation, disputes this notion, in part because its bid for the Dodgers was significantly less than Time Warner Cable’s bid. Dodgers games will continue to be televised on Fox Sports’ Prime Ticket network until the new network starts in 2014.

A group led by Magic Johnson and financed by Guggenheim Partners bought the Dodgers last year in a deal valued at $2.3 billion. “We concluded last year that the best way to give our fans what they want — more content and more Dodger baseball — was to launch our own network,” Mark Walter, the founder of Guggenheim Partners and the chairman of the Dodgers franchise, said in a statement.

The network will be operated by American Media Productions, a subsidiary of the Dodgers ownership group. “The creation of AMP will provide substantial financial resources over the coming years for the Dodgers to build on their storied legacy and bring a World Championship home to Los Angeles,” Mr. Walter said.

The financial terms of the arrangement were not released. The arrangement will require the approval of Major League Baseball.

Assessing the impending deal last week, the Nomura analyst Michael Nathanson said Time Warner Cable should “be careful what they wish for.” In a note to investors, he pointed out that the News Corporation is likely to use the high rates for the Lakers and Dodgers channels as negotiating leverage for other regional sports networks. News Corp. recently acquired 49 percent of YES, the Yankees channel in New York, and full ownership of a channel that carries the Cleveland Indians in Ohio. Time Warner Cable is a major distributor in New York and Ohio.

Mr. Nathanson said Los Angeles, which will have six regional sports networks once the Dodgers network starts, is “experiencing significant price inflation.” It’s too soon to know, he said, “whether these levels of investments will prove to be justified many years down the road or if we have reached the top of the sports-rights bubble.”

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The Lede Blog: Fire at a Nightclub in Southern Brazil

Victims of the fire are attended by medics.

An intense fire ripped through a nightclub crowded with university students in southern Brazil early on Sunday morning, leaving behind a scene of horror with bodies piled in the club’s bathrooms and outside on the street.

At least 245 people were killed, police officials said.

As my colleague, Simon Romero reports, a flare from a live band’s pyrotechnic show ignited the fire in the nightclub, called Kiss, in the southern city of Santa Maria. Throughout the morning on Sunday, rescue workers hauled bodies from the still smoldering building.

One video posted to YouTube showed several bodies of apparently unconscious victims splayed on concrete outside of the club as medics check them for signs of life.

Shortly before the fire, a club D.J. posted a photo on Facebook from inside the crowded club with the caption: “Kiss is pumping.”

A short time later, another photo purportedly taken inside the club and widely disseminated through social media showed smoke billowing on the crowded dance floor.

BOATE KISS PEGANDO FOGO! http://t.co/tdV2DO4q

— Boatos SM ® #LUTO (@BoatoSM) 27 Jan 13

The fire quickly engulfed the building.

Firefighters, apparently joined by volunteers who shielded their faces with T-shirts, struggled to pull people from the burning building.

Firefighters and volunteers tried to pull people from the burning building

Photos from the scene showed frantic friends and family members gathered outside the club and the hospital.

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Djokovic beats Murray for 3rd straight Aust. title

MELBOURNE, Australia (AP) — Novak Djokovic became the first man in the Open era to win three consecutive Australian titles when he beat Andy Murray 6-7 (2), 7-6 (3), 6-3, 6-2 in Sunday's final.

Little wonder he loves Rod Laver Arena.

"It's definitely my favorite Grand Slam," he said. "It's an incredible feeling winning this trophy once more. I love this court."

Djokovic has won four of his six major titles at Melbourne Park, where he is now unbeaten in 21 matches.

Nine other men had won back-to-back titles in Australia over 45 years, but none were able to claim three in a row.

Only two other men, American Jack Crawford (1931-33) and Australian Roy Emerson (1963-67), have won three or more consecutive Australian championships.

Born a week apart in May 1987 and friends since their junior playing days, Djokovic and Murray played like they knew each other's game very well in a rematch of last year's U.S. Open final. There were no service breaks until the eighth game of the third set, when Djokovic finally broke through and then held at love to lead by two sets to one.

Djokovic earned two more service breaks in the fourth set, including one to take a 4-1 lead when U.S. Open champion Murray double-faulted on break point.

"It's been an incredible match as we could have expected," Djokovic said. "When we play each other, it's always, we push each other to the limit and I think those two sets went over two hours, 15 minutes, physically I was just trying to hang in there. Play my game and focus on every point."

The 25-year-old Serb didn't rip his shirt off this time, as he did to celebrate his epic 5-hour, 53-minute win over Rafael Nadal in last year's final. He just did a little dance, looked up to the sky and then applauded the crowd after the 3-hour, 40-minute match.

Murray's win over Djokovic in the U.S. Open final last year ended a 76-year drought for British men at the majors, but he still is yet to make a breakthrough in Australia after losing a third final here in the last four years.

Djokovic's win went against the odds of recent finals at Melbourne Park. In four of the past five years, the player who won the second of the semifinals has finished on top in the championship match. But this year, Djokovic played his semifinal on Thursday — an easy 89-minute minute win over No. 4-seeded David Ferrer. Murray needed five energy sapping sets to beat 17-time major winner Roger Federer on Friday night.

"You don't wake up the next day and feel perfect, obviously," Murray said of the Federer match. "It's the longest match I played in six months probably. It obviously wasn't an issue today. I started the match well. I thought I moved pretty good throughout."

The win consolidated Djokovic's position as the No. 1-ranked player in the world, while Federer and Murray will be second and third when the ATP rankings are released Monday.

Their last two matches in Grand Slams — Murray's five-set win at last year's U.S. Open and Djokovic's victory here last year in five in the semifinals — had a total of 35 service breaks.

It was a vastly different, more tactical battle on Sunday, with the first two tight sets decided in tiebreakers.

"All our matches in last three years have been decided in a very few points, so it's really hard to say if I've done anything different," Djokovic said. "I tried to be more aggressive. So I went for my shots, especially in the third and fourth; came to the net quite often. I was quite successful in that percentage, so it worked well for me."

Murray, who called for a trainer to retape blisters on his right foot at the end of the second set, was visibly annoyed by noise from the crowd during his service games in the third set, stopping his service motion twice until the crowd quieted down. After dropping the third set, he complained about the noise to chair umpire John Blom.

"It's just a bit sore when you're running around," Murray said. "It's not like pulling a calf muscle or something. It just hurts when you run."

Djokovic came from 0-40 down in the second game of the second set to hold his serve, something he called "definitely one of the turning points."

"He missed an easy backhand and I think mentally I just relaxed after that," Djokovic said. "I just felt I'm starting to get into the rhythm that I wanted to. I was little more aggressive and started to dictate the play."

Although Djokovic went into the match with a 10-7 lead in head-to-heads, Murray had beaten Djokovic five out of eight times in tiebreakers, and that improved to six of nine after four unforced errors by Djokovic to end the first set.

Djokovic pegged back that edge in the second set, when Murray also didn't help his cause by double-faulting to give Djokovic a 3-2 lead, and the Serbian player didn't trail again in the tiebreaker.

On the double-fault, Murray had to stop as he was about to serve to pick up a feather that had fallen on the court.

"I could have served, it just caught my eye before I served ... I thought it was a good idea to move it," he said.

"Maybe it wasn't because I obviously double faulted. At this level it can come down to just a few points here or there. My probably biggest chance was at the beginning of the second set; (I) didn't quite get it. When Novak had his chance at the end of the third, he got his."

Djokovic will have little time to savor the win — he's playing Davis Cup for Serbia next weekend against Belgium.

"It's going to be a lot of fun ... to see how I can adjust to clay court in indoor conditions, playing away Davis Cup, which is always tricky," he said.

Andre Agassi was among those in the capacity crowd — the four-time Australian champion's first trip Down Under in nearly 10 years — and he later presented the trophy to Djokovic.

Victoria Azarenka, who won Saturday's women's singles final over Li Na, was also there with her boyfriend rapper Redfoo. Actor Kevin Spacey met in the dressing room with both players ahead of the match and later tweeted a photo of himself with them.

In the earlier mixed doubles final Sunday, wild-card entrants Jarmila Gajdosova and Matthew Ebden of Australia beat the Czech pair of Lucie Hradecka and Frantisek Cermak 6-3, 7-5.

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Well: Ask Well: Squats for Aging Knees

You are already doing many things right, in terms of taking care of your aging knees. In particular, it sounds as if you are keeping your weight under control. Carrying extra pounds undoubtedly strains knees and contributes to pain and eventually arthritis.

You mention weight training, too, which is also valuable. Sturdy leg muscles, particularly those at the front and back of the thighs, stabilize the knee, says Joseph Hart, an assistant professor of kinesiology and certified athletic trainer at the University of Virginia, who often works with patients with knee pain.

An easy exercise to target those muscles is the squat. Although many of us have heard that squats harm knees, the exercise is actually “quite good for the knees, if you do the squats correctly,” Dr. Hart says. Simply stand with your legs shoulder-width apart and bend your legs until your thighs are almost, but not completely, parallel to the ground. Keep your upper body straight. Don’t bend forward, he says, since that movement can strain the knees. Try to complete 20 squats, using no weight at first. When that becomes easy, Dr. Hart suggests, hold a barbell with weights attached. Or simply clutch a full milk carton, which is my cheapskate’s squats routine.

Straight leg lifts are also useful for knee health. Sit on the floor with your back straight and one leg extended and the other bent toward your chest. In this position, lift the straight leg slightly off the ground and hold for 10 seconds. Repeat 10 to 20 times and then switch legs.

You can also find other exercises that target the knees in this video, “Increasing Knee Stability.”

Of course, before starting any exercise program, consult a physician, especially, Dr. Hart says, if your knees often ache, feel stiff or emit a strange, clicking noise, which could be symptoms of arthritis.

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J. Richard Hackman, an Expert in Team Dynamics, Dies at 72

J. Richard Hackman, a Harvard psychology professor whose fieldwork sometimes took him to the cockpit of an airliner to observe the crew in a nearly five-decade quest to determine the dynamics of teamwork and effective leadership, died on Jan. 8 in Boston. He was 72.

The cause was lung cancer, his wife, Judith Dozier Hackman, said.

Dr. Hackman, the author or co-author of 10 books on group dynamics, was the Edgar Pierce professor of social and organizational psychology at Harvard.

In one of his best-known books, “Leading Teams: Setting the Stage for Great Performances” (2002), he replaced the popular image of the powerful “I can do it all” team leader with that of someone who, as he wrote, had the subtle skills “to get a team established on a good trajectory, and then to make small adjustments along the way to help members succeed.”

The conditions for a successful team effort — among them “a compelling direction, an enabling team structure, a supportive organizational context and expert team coaching” — “are easy to remember,” Dr. Hackman wrote.

“The challenge,” he continued, “comes in developing an understanding of those conditions that is deep and nuanced enough to be useful in guiding action, and in devising strategies for creating them even in demanding or team-unfriendly organizational circumstances.”

Besides tracking the interplay of pilots, co-pilots and navigators aboard civilian and military planes, Dr. Hackman observed corporate boards, sports teams, orchestra players, telephone-line repair crews, hospital workers and restaurant kitchen staff members.

And in recent years, for his 2011 book, “Collaborative Intelligence,” he was allowed to observe interactions within the American intelligence, defense, law-enforcement and crisis-management communities.

“Although my main aspiration has been to provide guidance that will be useful to team leaders and members,” he wrote, “there are no ‘one-minute’ prescriptions here — creating, leading and serving on teams is not that simple.”

Anita Woolley, a professor of organizational behavior and theory at the Tepper School of Business at Carnegie Mellon University in Pittsburgh, said, “The key thing about Dr. Hackman’s work is that it stands in contrast to some of the more popular models of leadership that focused very much on style or how leaders behave, versus what they do.”

Rather than viewing pay as a prime motivator for good performance, she continued, “he focused on features of people’s jobs that made them more intrinsically satisfied: the freedom to determine how they conduct their work, having a variety of tasks, having knowledge of the ultimate outcomes of their work, knowing how their work affects or is received by other people.”

He also liked to overturn some of the received wisdom about teamwork. In a 2011 article for The Harvard Business Review, Dr. Hackman listed “Six Common Misperceptions About Teamwork.” Among them was this:

“Misperception No. 2: It’s good to mix it up. New members bring energy and fresh ideas to a team. Without them, members risk becoming complacent, inattentive to changes in the environment, and too forgiving of fellow members’ misbehavior.

“Actually: The longer members stay together as an intact group, the better they do. As unreasonable as this may seem, the research evidence is unambiguous. Whether it is a basketball team or a string quartet, teams that stay together longer play together better.”

John Richard Hackman was born in Joliet, Ill., on June 14, 1940, the only child of J. Edward and Helen Hackman. His father was an oil pipeline engineer, his mother a schoolteacher.

Dr. Hackman received a bachelor’s degree in mathematics from MacMurray College in Jacksonville, Ill., in 1962, and a doctorate in psychology from the University of Illinois in 1966. He soon joined the psychology and administrative sciences department faculties at Yale, where he taught until 1986, when he moved to the psychology and business departments at Harvard.

Besides his wife, who is an associate dean at Yale, he is survived by two daughters, Julia Beth Proffitt and Laura Dianne Codeanne, and four grandchildren.

After Dr. Hackman died, The Harvard Crimson wrote that for years he had “devoted countless hours to improving one team in particular — the Harvard women’s basketball squad, for which he volunteered as an honorary coach.”

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Rio de Janeiro Grapples With Exploding Manholes

RIO DE JANEIRO — David McLaughlin was thrilled to be in Brazil. He had arrived here from Ohio State University on a Fulbright grant to research Brazilian hip-hop music with his wife, Sarah Lowry, a scholar of Russian literature. The graduate students, newlyweds, set out one morning in June 2010 to search for an apartment in the beachfront neighborhood of Copacabana.

Then, while crossing a bustling avenue, the asphalt under their feet started to tremble. A fireball surged suddenly from a manhole, enveloping Ms. Lowry in flames. Mr. McLaughlin leapt on her and extinguished the fire. But Ms. Lowry had burns on 80 percent of her body and spent 70 days in the hospital here. Mr. McLaughlin was burned on 35 percent of his body.

“The explosion was one of the most traumatic experiences I can imagine,” Mr. McLaughlin, 34, said in a telephone interview from New York, where he and his wife now live. “Almost three years later, recovering is made more complicated every time we learn there’s been a new explosion on the streets of Rio.”

Since 2010, manhole explosions here have shattered windows, flattened cars and injured passers-by. An explosion in 2012 killed a worker at Rio’s port. While the rate of explosions has slowed, the city was rattled yet again in December after a manhole erupted behind the Copacabana Palace, the neo-Classical-style gem that is arguably Rio’s most luxurious hotel. A motorcyclist narrowly escaped the recent blast, filming with his cellphone his motorcycle going up in flames.

Such explosions are not unique to Rio. Indeed, engineering experts say few large cities are immune. Gas from any number of sources can collect underground. Electrical cables, often running in the same pipes, can fray with age, producing a spark that can set off an explosion, shooting up fire and flinging hundred-pound cast-iron manhole covers high into the air.

But Moacyr Duarte, a senior researcher on the city’s infrastructure at the Federal University of Rio de Janeiro, said dozens of explosions here, which often occurred in densely-populated areas, had “clearly gone beyond what it is statistically reasonable,” before recently declining.

The explosions have set Cariocas, as the residents of this traditionally relaxed city are known, on edge, and the blasts point to the broader problem of dilapidated infrastructure even as Rio emerges from a long economic decline.

As Rio prepares for its cameo as host of the 2014 World Cup and the 2016 Summer Olympics, the expansion of offshore oil production has pumped life into its economy. The city has sought to revitalize neglected areas with projects like a new cable car system in Complexo do Alemão, a patchwork of slums, while a real estate boom has attracted the likes of Donald J. Trump, who plans to build five skyscrapers.

At the same time, Rio’s resurgence has only added to the stress on its aging infrastructure.

While passenger traffic at Rio’s international airport climbed 20 percent last year, it has been plagued by blackouts in recent weeks, escalators and elevators work sporadically, and vultures have descended through holes in the airport’s roof.

Rio’s car fleet grew 56 percent in the last decade, but road building and public transportation improvements failed to keep pace, intensifying traffic jams. Last year in downtown Rio, a 20-story office building just collapsed one night, knocking down two other buildings and killing 17 people.

Amid such challenges, erupting manholes have endured as just one more bizarre and potentially dangerous feature of the cityscape.

Some Cariocas have found dark humor in the sheer randomness. A video game for Facebook, “Rio Boom-eiro Challenge,” involves the nimble avoidance of sidewalk explosions.

Others have found artistic inspiration. Fábio Maia, an advertising executive, has been putting stickers in the shape of a lighted fuse alongside manholes. The idea came to him one day after he was dodging manholes while out with his son in a stroller. “I started asking myself, ‘What kind of craziness is this?’ ” he said.

Mr. Duarte, of Federal University, said many of the manhole eruptions have been caused by leaks of gas or oil into overloaded underground networks, some built as far back as the 1920s.

After a surge in street explosions in 2010 and 2011, Rio’s mayor, Eduardo Paes, and prosecutors pressured utility companies into agreeing to pay fines of about $50,000 for each explosion, in addition to damages to victims.

(The electric company, Light, said it had not yet reached an agreement to pay damages to Mr. McLaughlin and Ms. Lowry.)

Mr. Paes’s office said in a statement that the “worst phase” of the manhole crisis was over, explaining that an emergency operation in 28 neighborhoods that ended last year identified 314 manholes with a great risk of explosion, and that crews were sent to fix each one.

Still, the mayor’s office acknowledged that the issue “hasn’t been completely addressed,” prompting Mr. Paes to raise the fine for each explosion to $250,000 and to advance a project mapping the city’s entire underground network.

Light said it had undertaken a $115 million investment program in the last two years aimed at preventing more explosions.

The company declined to provide figures on how many explosions had occurred recently on Rio’s streets, but it argued that they had become less frequent. “Eventualities in subterranean chambers occur around the world,” the company said.

Manholes continue to explode. The mayor’s office acknowledged that at least five blasts occurred in 2012, leaving one person dead and several injured. The explosion in December in Copacabana, one of Rio’s most populous districts, sowed panic among passers-by.

Antônio Carlos Costa, president of Rio de Paz, a human rights group that has painted Rio’s manhole covers red to bring attention to their potential danger, said the blasts offered a view into the perils that the new economic climate has been unable to resolve.

“In Brazil we have two types of violence,” he said, “intentional violence and violence that is a product of neglect. This is a type of violence that is more subtle, but is very present in Brazilian culture. The country is economically strong, but we do not have a culture of protecting human life.”

Lis Horta Moriconi contributed reporting.

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Azarenka beats Li, defends Australian Open title

MELBOURNE, Australia (AP) — Victoria Azarenka had the bulk of the crowd against her. The fireworks were fizzling out, and when she looked over the net she saw Li Na crashing to the court and almost knocking herself out.

Considering the cascading criticism she'd encountered after her previous win, Azarenka didn't need the focus of the Australian Open final to be on another medical timeout.

So after defending her title with a 4-6, 6-4, 6-3 victory over the sixth-seeded Li in one of the most unusual finals ever at Melbourne Park, Azarenka understandably dropped her racket and cried tears of relief late Saturday night.

She heaved as she sobbed into a towel beside the court, before regaining her composure to collect the trophy.

"It isn't easy, that's for sure, but I knew what I had to do," the 23-year-old Belarusian said. "I had to stay calm. I had to stay positive. I just had to deal with the things that came onto me."

There were a lot of those things squeezed into the 2-hour, 40-minute match. Li, who was playing her second Australian Open final in three years, twisted her ankle and tumbled to the court in the second and third sets.

The second time was on the point immediately after a 10-minute delay for the Australia Day fireworks — a familiar fixture in downtown Melbourne on Jan. 26, but not usually coinciding with a final.

Li had been sitting in her chair during the break, while Azarenka jogged and swung her racket around before leaving the court to rub some liniment into her legs to keep warm.

The 30-year-old Chinese player had tumbled to the court after twisting her left ankle and had it taped after falling in the fifth game of the second set. Immediately after the fireworks ceased, and with smoke still in the air, she twisted the ankle again, fell and hit the back of her head on the hard court.

The 2011 French Open champion was treated immediately by a tournament doctor and assessed for a concussion in another medical timeout before resuming the match.

"I think I was a little bit worried when I was falling," Li said, in her humorous, self-deprecating fashion. "Because two seconds I couldn't really see anything. It was totally black.

"So when the physio come, she was like, 'Focus on my finger.' I was laughing. I was thinking, 'This is tennis court, not like hospital.'"

Li's injury was obvious and attracted even more support for her from the 15,000-strong crowd.

Azarenka had generated some bad PR by taking a medical timeout after wasting five match points on her own serve in her semifinal win over American teenager Sloane Stephens on Thursday. She came back after the break and finished off Stephens in the next game, later telling an on-court interviewer that she "almost did the choke of the year."

She was accused of gamesmanship and manipulating the rules to get time to regain her composure against Stephens, but defended herself by saying she actually was having difficulty breathing because of a rib injury that needed to be fixed.

That explanation didn't convince everybody. So when she walked onto Rod Laver Arena on Saturday, there were some people who booed, and others who heckled her or mimicked the distinctive hooting sound she makes when she hits the ball.

"Unfortunately, you have to go through some rough patches to achieve great things," she said. "That's what makes it so special for me. I went through that, and I'm still able to kiss that beautiful trophy."

She didn't hold a grudge.

"I was expecting way worse, to be honest. What can you do? You just have to go out there and try to play tennis in the end of the day," she said. "It's a tennis match, tennis battle, final of the Australian Open. I was there to play that.

"The things what happened in the past, I did the best thing I could to explain, and it was left behind me already."

The match contained plenty of nervy moments and tension, and 16 service breaks — nine for Li. But it also produced plenty of winners and bravery on big points.

Azarenka will retain the No. 1 ranking she's mostly held since her first Grand Slam win in Melbourne last year.

Li moved into the top five and is heartened by a recent trend of Australian runner-ups winning the French Open. She accomplished that in 2011, as did Ana Ivanovic (2008) and Maria Sharapova (2012).

"I wish I can do the same this year, as well," Li said.

Later Saturday, Bob and Mike Bryan won their record 13th Grand Slam men's doubles title, defeating the Dutch team of Robin Haase and Igor Sijsling 6-3, 6-4.

Sunday's men's final features two-time defending champion Novak Djokovic and U.S. Open winner Andy Murray. Djokovic is seeking to become the first man in the Open era to win three titles in a row in Australia.

Azarenka was planning a night of partying to celebrate her second major title, with her friend Redfoo and the Party Rock crew, and was hopeful of scoring some tickets to the men's final.

She said she needed to let her hair down after a draining two weeks and hoped that by being more open and frank in recent times she was clearing up any misconceptions the public had of her.

"When I came first on the tour I kind of was lost a little bit," he said. "I didn't know how to open up my personality. It's very difficult when you're alone. I was independent since I was, you know, 10 years old. It was a little bit scary and I wouldn't show my personality.

"So the (last) couple of years I learned how to open up to people and to share the moments. I wasn't really good before. I hope I got better. It's your judgment."

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Diner’s Journal Blog: PepsiCo Will Halt Use of Additive in Gatorade

PepsiCo announced on Friday that it would no longer use an ingredient in Gatorade after consumers complained.

The ingredient, brominated vegetable oil, which was used in citrus versions of the sports drink to prevent the flavorings from separating, was the object of a petition started on Change.org by Sarah Kavanagh, a 15-year-old from Hattiesburg, Miss., who became concerned about the ingredient after reading about it online. Studies have suggested there are possible side effects, including neurological disorders and altered thyroid hormones.

The petition attracted more than 200,000 signatures, and this week, Ms. Kavanagh was in New York City to tape a segment for “The Dr. Oz Show.” She visited The New York Times on Wednesday and while there said, “I just don’t understand why they can’t use something else instead of B.V.O.”

“I was in algebra class and one of my friends kicked me and said, ‘Have you seen this on Twitter?’ ” Ms. Kavanagh said in a phone interview on Friday evening. “I asked the teacher if I could slip out to the bathroom, and I called my mom and said, ‘Mom, we won.’ ”

Molly Carter, a spokeswoman for Gatorade, said the company had been testing alternatives to the chemical for roughly a year “due to customer feedback.” She said Gatorade initially was not going to make an announcement, “since we don’t find a health and safety risk with B.V.O.”

Because of the petition, though, Ms. Carter said the company had changed its mind, and an unidentified executive there gave Beverage Digest, a trade publication, the news for its Jan. 25 issue.

Previously, a spokesman for PepsiCo had said in an e-mail, “We appreciate Sarah as a fan of Gatorade, and her concern has been heard.”

Brominated vegetable oil will be replaced by sucrose acetate isobutyrate, an emulsifier that is “generally recognized as safe” as a food additive by the Food and Drug Administration. The new ingredient will be added to orange, citrus cooler and lemonade Gatorade, as well Gatorade X-Factor orange, Gatorade Xtremo citrus cooler and a powdered form of the drink called “glacier freeze.”

Ms. Carter said consumers would start seeing the new ingredient over the next few months as existing supplies of Gatorade sell out and are replaced.

Health advocates applauded the company’s move. “Kudos to PepsiCo for doing the responsible thing on its own and not waiting for the F.D.A. to force it to,” said Michael Jacobson, executive director of the Center for Science in the Public Interest.

Mr. Jacobson has championed the removal of brominated vegetable oil from foods and beverages for the last several decades, but the F.D.A. has left it in a sort of limbo, citing budgetary constraints that it says keep it from going through the process needed to formally ban the chemical or declare it safe once and for all.

Brominated vegetable oil is banned as a food ingredient in Japan and the European Union. About 10 percent of drinks sold in the United States contain it, including Mountain Dew, which is also made by PepsiCo; some flavors of Powerade and Fresca from Coca-Cola; and Squirt and Sunkist Peach Soda, made by the Dr Pepper Snapple Group.

PepsiCo said it had no plans to remove the ingredient from Mountain Dew and Diet Mountain Dew, both of which generate more than $1 billion in annual sales.

Heather White, executive director at the Environmental Working Group, said of PepsiCo’s decision, “We can only hope that other companies will follow suit.” She added, “We need to overhaul how F.D.A. keeps up with the latest science on food additives to better protect public health.”

Ms. Kavanagh agreed. “I’ve been thinking about ways to take this to the next level, and I’m thinking about taking it to the F.D.A. and asking them why they aren’t doing something about it,” she said. “I’m not sure yet, but I think that’s where I’d like to go with this.”

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This post has been revised to reflect the following correction:

Correction: January 26, 2013

An earlier version of this article misspelled the surname of the 15-year-old who started a petition on Change.org to end the use of brominated vegetable oil in Gatorade. She is Sarah Kavanagh, not Kavanaugh.

A version of this article appeared in print on 01/26/2013, on page B1 of the NewYork edition with the headline: PepsiCo Will Halt Additive Use In Gatorade.

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