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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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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Tens of Thousands Fill Tahrir Square on Anniversary of Egyptian Revolt

Tara Todras-Whitehill for The New York Times

A man throws rocks at Egyptian security officials in Cairo on Friday.

CAIRO — Tens of thousands of Egyptians filled Tahrir Square here on Friday to observe the second anniversary of the revolt that ousted President Hosni Mubarak with a massive protest against the political ascendance of the Muslim Brotherhood.

There were parallel demonstrations in several other cities, and minor clashes between protesters and security forces in Alexandria, Cairo and elsewhere.

Protesters at times seemed to be re-enacting scenes from the 18-day revolt that toppled Mr. Mubarak two years ago. The loudest chants were recycled from the revolution — “Leave, leave” and “The people want the fall of the regime.” Others were adapted slightly to focus on the Islamist Brotherhood, calling for an end to “the rule by the supreme guide,” Mohamed Badie, the Brotherhood’s spiritual leader.

It was the latest confirmation that the Islamists, who have dominated elections since Mr. Mubarak’s ouster, have inherited not only his presidential palace but also the blame for Egypt’s myriad problems.

On Friday, five months after President Mohamed Morsi of the Brotherhood’s political party took power from Egypt’s interim military rulers, the demonstrators’ main complaint was that the Islamists had failed to fulfill the social welfare and social justice demands of the original revolt. A banner in the center of the square called for the repeal of the Islamist-backed Constitution, passed in a referendum last month, which opponents say failed to enshrine ironclad guarantees of individual freedoms.

“The Egyptian people had so many dreams and the reality on the ground is, everything is still the same,” said Mohamed Adl, 41, a teacher who carried a sign with a handwritten poem blaming the Brotherhood for making “injustice the guard of our lives.”

By early afternoon in Cairo, a few dozen protesters at one corner of the square — many of them apparently teenagers — had begun to throw rocks over a cement barrier at security forces massed around the Interior Ministry building, resuming an intermittent battle that had begun the day before in anticipation of the anniversary. The security officers, as they typically do, threw back some of the rocks, and plumes of tear gas sailed overhead past a church steeple up the street.

State media reported at around 3 p.m. that four people had been injured in the clashes with security forces near the square, in addition to 25 injured since the battle began the day before.

Osama Amir, 22, a student walking from the fight, said he did not know how it started or why. “People have lost confidence in the central security forces, so when there is a chance to beat them up, we will beat them up,” he said.

A little while later, another street fight broke out when demonstrators passed the office of the Muslim Brotherhood Web site on their way to the square and threw rocks at it. Other civilians — it was unclear whether they were annoyed neighbors or Brotherhood supporters — rushed out to strike back at the protesters, and a street vendor’s kiosk was burned in the melee.

The Brotherhood, hoping to avoid the kind of factional clashes that killed 10 people in December, urged its supporters to stay away from the square and observe the anniversary with community service projects around the country.

Both the Brotherhood and its opponents are now looking ahead to parliamentary elections expected to be held in April, and critics of the Brotherhood contended that its community service drive was in part an effort to curry favor with needy voters. The opposition had poured most of its energy into Friday’s demonstrations, and its critics said it was once again wasting its time on street protests while the Islamists had already turned their attention to the more important electoral battle.

“It is important that people go down to the square, if for no other reason than to remind Egypt, and themselves, that something really special happened during those 18 days two years ago,” said H. A. Hellyer, a researcher based here with the Brookings Institution. “That energy, however, can’t stay in the square,” he said. “It’s got to be channeled.”

But some demonstrators argued that the public protests were a first step toward building a more potent political movement that might someday counterbalance the Islamists. “Nothing tangible will come of today, and I don’t think anything tangible with happen with the elections,” said Ayman Roshdy, 57, a retired marketing consultant. “But there is hope. What is happening today is part of the process of building hope.

“The Islamists have been saying that they are the good guys,” he continued. “Now they are in control and they are being exposed by the minute. And we are building a political movement that will help us to produce a reasonable government.”

By late afternoon, other marches from around the city, some led by well-known leaders of the political opposition, were streaming toward the square and the crowd was expected to swell toward nightfall, along with the potential for more violence.

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Murray edges Federer, reaches Australian final

MELBOURNE, Australia (AP) — Andy Murray has finally beaten Roger Federer at a Grand Slam.

The U.S. Open champion beat 17-time major winner Federer 6-4, 6-7 (5), 6-3, 6-7 (2), 6-2 Friday at the Australian Open, calling it a massive confidence boost as he attempts to win his second consecutive major.

Murray, who missed his chance to serve out the match at 6-5 in the fourth set, will play defending champion and top-seeded Novak Djokovic in Sunday's final. Djokovic cruised past David Ferrer in straight sets in just under 90 minutes — 2 1/2 hours less than Murray's semifinal.

Advantage Djokovic.

There was some controversy in that 12th game of the fourth set when Federer appeared to glare and say something to Murray when the Scotsman stopped momentarily behind the baseline during the rally.

Murray ignored it after winning the point, but conceded serve in that game and lost the ensuing tiebreaker before regrouping in the fifth set.

"I mean, it wasn't a big deal," Federer said. "We just looked at each other one time. That's OK, I think. We were just checking each other out for bit. That wasn't a big deal for me — I hope not for him."

While Murray came into the match with a 10-9 career advantage, Murray had never beaten Federer in their three previous meetings at a major — the finals of the 2008 U.S. Open, 2010 Australian Open and last year at Wimbledon.

"It's always tough against him, when he plays in Slams is when he plays his best tennis," Murray said. "When his back was against the wall at 6-5 and I was serving, he came up with some unbelievable shots. I just had to keep fighting."

On Saturday, defending champion Victoria Azarenka will play Li Na of China for the women's singles title. Azaranka needs to win to retain her No. 1 ranking or it will go to Serena Williams.

Also, American brothers Bob and Mike Bryan will play their fifth consecutive Australian Open doubles final and attempt to win a record 13th Grand Slam doubles championship. They'll play the Dutch pair of Robin Haase and Igor Sijsling.

Federer outplayed Murray at stages of the match, but the 25-year-old Scotsman appeared to have the legs and stamina over the 31-year-old Federer in the fifth set, including a service break to clinch the tense match.

"It's big. I never beat Roger in a Slam before. It definitely will help with the confidence," Murray said. "Just knowing you can win against those guys in big matches definitely helps."

Federer said he was playing catch-up all night.

"Definitely it was more of a chase," Federer said. "I think I had my chances a little bit. Obviously, you're going to go through a five-setter with some regrets. But overall, I think Andy was a bit better than I was tonight."

Murray refused to elaborate on the details of the exchange in the fourth set.

"Stuff like that happens daily in tennis matches ... it was very, very mild in comparison to what happens in other sports," Murray said. "It's just one of those things."

Murray said while the outburst didn't "rattle" him, it might have helped Federer get back in the match.

"I think he raised his game, and that's what happens," he said. "Sometimes guys need to get emotion into the match. He definitely raised his level ... in that game I think he hit two balls onto the line and was extremely aggressive after that."

Asked again what Federer had said, Murray reiterated he didn't feel it was "relevant."

"I'm sure Roger won't talk about it and I have no interest in discussing it either, because, like I say, it happens all the time," he said. "People will want to make a big deal of it and it isn't really a big deal.

"It's a very late finish, I'm tired. I don't want to be wasting any energy, because I'll need all of it if I want to win against Novak on Sunday."

With a capacity crowd of 15,000 at Rod Laver Arena watching, including the Australian legend Laver himself, Federer opened the match serving and was in trouble early, losing a 28-rally point to set up break point for Murray. But Federer held the game with a stunning cross-court forehand that just looped over the net from the baseline.

Murray, who had not lost a set through five rounds at Melbourne Park this year, had the first service break — on his fourth break point — to lead 2-1. It came in unusually cool summer conditions in Melbourne — breezy and temperatures of only 60 degrees during most of the match.

The crowd was initially evenly split between Federer and Murray supporters — and at times, they were competing to be heard. At one point in the second set, a group of Murray fans wearing white shirts with blue letters spelling his nickname "Muzza" stood to chant Murray's name, while a group of Federer supporters with Swiss flags on their cheeks and shirts chanted Federer's name.

Earlier Friday, top-seeded Sara Errani and Roberta Vinci of Italy won the first title of 2013 at Melbourne Park, beating the unseeded Australian pair of Ashleigh Barty and Casey Dellacqua 6-2, 3-6, 6-2 for the women's doubles championship.

The 16-year-old Barty was attempting to become the youngest Grand Slam champion since Martina Hingis won the Australian Open singles title in 1997.

Li lost the Australian Open final to Kim Clijsters in 2011 two months before winning her first and only Grand Slam at the French Open.

"Last time was more exciting, (more) nervous because it was my first time to be in a final," Li said. "But I think this time (I'm) more calmed down, more cool."

Azarenka leads 5-4 in career matches, including winning the last four times they've played.

"I'm really hungry to defend my title," Azarenka said. "I've put myself in the position to give it the best shot."

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