Explosion at Mexican oil giant Pemex headquarters kills 25

MEXICO CITY (Reuters) - A powerful explosion rocked the Mexico City headquarters of state-owned oil giant Pemex on Thursday, killing at least 25 people, injuring more than 100 and trapping others inside.

The mid-afternoon blast shattered the lower floors of the downtown tower, throwing debris into the streets and sending frightened workers running outside.

A government official, speaking on condition of anonymity, said preliminary findings suggested the blast was caused by a gas boiler exploding in a Pemex building next to the tower. But the cause was still being investigated, the official added.

The explosion was the latest in a series of safety problems to hit Mexico's national oil monopoly.

Interior Minister Miguel Angel Osorio Chong said the blast killed at least 25 people, up from a previous count of 14, and injured 100. Dozens of employees were believed to be still trapped inside, and rescue workers said the death toll at the Pemex skyscraper could keep rising.

Mauricio Parra, a paramedic at the scene, said he believed at least 20 people had died and that 100 could be trapped at the offices of Pemex, a national institution that President Enrique Pena Nieto's administration has pledged to reform this year.

Police quickly cordoned off the building, and television images showed the explosion caused major damage to the ground floor and blew out windows on the lower floors of the tower.

"You could feel it all through the building," said Mario Guzman, a Pemex worker who was on the 10th floor of the building, which is more than 50 floors high.

First mistaking the blast for an earthquake, Guzman, who said he escaped after running down the stairs, feared the building would collapse on top of him and his colleagues, "and that we would end up like a sandwich."

Several witnesses said the blast came from the neighboring Pemex building. Pemex said initially the tower was evacuated due to a problem with its electricity supply. It then said there had been an explosion, but did not say what caused it.

Earlier in the evening, Pena Nieto, who took office in December, went to the scene of the blast and said it would be thoroughly investigated. He vowed to apply "the force of the law" if anyone was found to be responsible for it.

Mexican news network Milenio said security officials after the explosion carried out a precautionary search of Congress for explosive devices, but found nothing.

Helicopters buzzed around the building and lines of fire trucks sped to the entrance, while emergency workers ferried injured people through wreckage strewn on the street.

Search-and-rescue dogs were sent into the skyscraper, a Mexico City landmark that sports a distinctive "hat" on top. Pemex published a list of 105 workers who were being treated for injuries in hospitals.

DEADLY ACCIDENTS

Some families of people working in the tower were impatient for news about missing relatives.

Gloria Garcia, 53, herself a Pemex worker who was not in the building during the explosion, came to see if she could track down her son, who worked in one of the floors hit.

"I'm calling his phone and he's not answering," Garcia said, weeping as she called repeatedly on her phone. "Nobody knows anything. They won't let me through. I want to see my son whatever state he's in."

Pemex has experienced a number of deadly accidents in recent years and lesser safety problems have been a regular occurrence. In September, 30 people died after an explosion at a Pemex natural gas facility in northern Mexico.

More than 300 were killed when a Pemex natural gas plant on the outskirts of Mexico City exploded in 1984.

Eight years later, about 200 people were killed and 1,500 injured after a series of underground gas explosions in Guadalajara, Mexico's second biggest city. An official investigation found Pemex was partly to blame.

Alberto Islas, a security analyst at consultancy Risk Evaluation, said the explosion at the Pemex offices was another blot against the company's safety record.

"We've seen this time and again at Pemex. They don't have a well-integrated policy," Islas said, noting it would probably take several hours before investigators would be able to determine the cause of the explosion.

Pemex, a symbol of Mexican self-sufficiency since the oil industry was nationalized in 1938, has been held back by inefficiency and corruption and by the burden it shoulders of providing about a third of federal tax revenues.

Pena Nieto has pledged to open up the company to more private investment to improve its performance.

(Additional reporting by Krista Hughes, Cyntia Barrera, Gabriel Stargardter and Liz Diaz; Writing by Dave Graham; Editing by Kieran Murray and Peter Cooney)

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Death toll in Mexico oil firm blast rises to 25

MEXICO CITY - A huge blast rocked the headquarters of Mexican state-owned oil giant Pemex on Thursday, killing at least 25 people, injuring 100 and leaving rescuers scrambling to find survivors into the night.

Smoke billowed skyward as people fled the 54-floor Mexico City skyscraper, with some of those hurt in the blast being carried out on stretchers and office chairs, as witnesses recalled an earthquake-like rumble shaking the floor.

Windows broke on several lower floors, scattering debris. The company said the cause of the deadly incident was under investigation and declared that any reports on the origin of the blast amounted to speculation.

Officials said the blast ripped through an annex at around 3:40 pm (2140 GMT), causing severe damage to three floors. Witnesses said a roof connecting the annex to the tower collapsed. Thousands of people were evacuated.

As night fell, floodlights shone on the rubble and two cranes were brought to help rescuers find survivors.

Almost six hours after the blast, President Enrique Pena Nieto said on Twitter that "one more person was rescued alive in the rubble."

"I don't have any conclusive report on the cause, which is why I insist against any speculation," Pena Nieto told reporters after visiting the site.

A spokesman for the civil protection agency said there was an apparent "accumulation of gas" in an electrical supply room, but the exact cause of the blast has yet to be confirmed.

Interior Minister Miguel Angel Osorio Chong told a news conference that 17 women and eight men had died, and that 101 people had been injured.

Almost eight hours after the blast, he said it was hard to know if anybody was still trapped in the rubble.

Pena Nieto ordered that the rescue continue "to the last piece of debris, to be sure that there is not one single person trapped under," the minister said.

Emergency workers with rescue dogs, helicopters and several ambulances were at the scene in the capital, a city that is equipped to handle earthquakes.

Pemex said on Twitter that the explosion hit the ground floor and mezzanine of the tower's annex.

"We had two minutes to leave the building. I was headed to the pharmacy when the windows broke. It was a deafening noise," Astrid Garcia Trevino, who worked in the annex, told AFP. "The floor shook as if it was an earthquake."

Some witnesses told local media that a number of people were trapped in rubble.

"It was dramatic. The building was shaking and suddenly there was debris. We couldn't even see the people next to us," Pemex employee and union member Cristian Obele told reporters.

"Windows broke, people were injured and a lot of people were in shock," an unidentified worker told the Televisa channel, describing the impact of the "very strong explosion."

Mayor Miguel Angel Mancera and several top federal officials headed to the scene, as authorities closed off the avenue in front of the tower.

"I deeply regret the death of Pemex workers," Pena Nieto said on Twitter. "The priority at the moment is to help the injured and protect the people working there."

Pemex, the world's fourth-largest crude producer with around 2.5 million barrels per day, said the administrative centre would remain closed "until further notice," after it had earlier been evacuated due to a power failure.

The company has experienced deadly accidents at its oil and gas facilities in the past. Last year, a huge explosion killed 30 people at a gas plant near the northern city of Reynosa, close to the US border.

The previous worst incident took place in December 2010, when an oil pipeline exploded after it was punctured by thieves in the central town of San Martin Texmelucan, leaving 29 dead and injuring more than 50.

In October 2007, 21 Pemex workers died during a gas leak on an oil platform in the Gulf of Mexico. Most drowned when they jumped into the sea in panic.

- AFP/ir

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Supreme Court to hear Ashis Nandy's plea today

NEW DELHI: The Supreme Court will on Friday hear sociologist Ashis Nandy's petition seeking protection from arrest for an alleged anti-Dalit remark he made at the Jaipur Literary Festival (JLF).

Nandy has requested the apex court to quash all the FIRs registered against him.

"We are moving the Supreme Court for quashing of the FIR as well as laying down the guidelines in terms of something which constitutes an offence against SC/ST Act and something which is said in 'freedom of speech'," Nandy's lawyer Gaurav Kanth told the media yesterday.

Kanth informed that there are four FIRs registered against Nandy.

"To our knowledge, I thing there are four of them which have been registered. We don't have the copy of the FIRs, but we know one each is in Jaipur, Jodhpur, Nasik and Raipur and there is something in Patna too," he added.

The lawyer said that his main plea in the apex court is that there was no intent when Nandy had spoken these statements.

"My main plea is because there is no intent when he had spoken these statements and as far as the SC/ST Act is concerned, there is no question of any harm or anything which has been caused to any particular member of SC/ST caste or community. So, we are moving in terms of the fact that nothing really constitutes any criminal or penal action," he added.

To a poser on why the police had not yet questioned Nandy in connection with this case, Kanth said that Nandy was all ready for cooperation in this regard.

"I can't really comment anything on that because I really don't know why they are not coming and questioning him because we were ready for (it) and we are still ready to participate in the investigations. Whatever questions they have, we are ready to answer them," said Kanth.

"We were all ready yesterday also and we are ready today also, but we have not received any intimation from them as to when do they want to come and question him," he added.

Asserting that he has worked for Dalits, OBCs and adivasis for 45 years of his life, Nandy had earlier on Tuesday said that he was ready to go to jail if tried under the Atrocities Act and convicted.

"It is a non-bailable warrant, I am told, under this act. And, if at the age of 75, I am tried under the Atrocities Act and convicted, I will go to jail. I will not contest it. I will go to jail because I have worked for Dalits, OBCs and Adivasis for 45 years of my life, and I am not going to take this insult quietly, in the sense that I will oppose it and try to subvert it. I will go to jail," he said, when asked about his future course of action if issued summons by Rajasthan Police.

Nandy, however, said that he has not received the summons as yet.

"I have only heard that an FIR has been lodged against me. When I get that FIR, when I get that summons I shall respond to that, I shall go there," he added.

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Hedgehog Alert! Prickly pets can carry salmonella

NEW YORK (AP) — Add those cute little hedgehogs to the list of pets that can make you sick.

In the last year, 20 people were infected by a rare but dangerous form of salmonella bacteria, and one person died in January. The illnesses were linked to contact with hedgehogs kept as pets, according to a report released Thursday by the Centers for Disease Control and Prevention.

Health officials on Thursday say such cases seem to be increasing.

The CDC recommends thoroughly washing your hands after handling hedgehogs and cleaning pet cages and other equipment outside.

Other pets that carry the salmonella bug are frogs, toads, turtles, snakes, lizards, chicks and ducklings.

Seven of the hedgehog illnesses were in Washington state, including the death — an elderly man from Spokane County who died in January. The other cases were in Alabama, Illinois, Indiana, Michigan, Minnesota, Ohio and Oregon.

In years past, only one or two illnesses from this salmonella strain have been reported annually, but the numbers rose to 14 in 2011, 18 last year, and two so far this year.

Children younger than five and the elderly are considered at highest risk for severe illness, CDC officials said.

Hedgehogs are small, insect-eating mammals with a coat of stiff quills. In nature, they sometimes live under hedges and defend themselves by rolling up into a spiky ball.

The critters linked to recent illnesses were purchased from various breeders, many of them licensed by the U.S. Department of Agriculture, CDC officials said. Hedgehogs are native to Western Europe, New Zealand and some other parts of the world, but are bred in the United States.

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Online:

CDC report: http://www.cdc.gov/mmwr

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Arias' Lawyer Shows Ex-Boyfriend's Lewd Photos

Accused murderer Jodi Arias was kept away from the Mormon friends of her lover Travis Alexander and their torrid sex affair was kept secret by Alexander, even as he sent lewd photos of himself to her online, according to court testimony today.

The testimony in Arias' trial for killing Alexander in 2008 was intended to bolster the defense's argument that she killed him in self defense, that Alexander was a sexual deviant who treated Arias as his "dirty little secret."

Arias' attorneys introduced as evidence photos that Alexander took of his penis and sent to Arias, part of a string of graphic messages and sexual phone calls the two engaged in while Alexander, an elder in the Mormon church, was supposed to be chaste.

Today's witness was the latest in a string called by the defense, including Alexander's former girlfriend Lisa Daidone, who told the court that Alexander had professed to be a virgin.

Daniel Freeman continued his testimony today, describing how he was a friend of both Arias and Alexander but that Alexander kept Arias distanced from his Mormon pals.

"Travis had made more friends at (the Mormon) ward, and had (Ultimate Fighting Championship) fight nights at his house many times, and Jodi was in town, but she wasn't there," Freeman said.

"There was that group of friends, them and Jodi, two different groups, and so Lisa [Daidone] and friends from church were there, but Jodi wasn't there," Freeman said.

Jodi Arias Murder Trial: Former Boyfriend Takes Stand Watch Video

Jodi Arias Murder Trial: Defense's First Day of Witnesses Watch Video

Alexander's behavior, the defense hopes to prove, shows that he mistreated Arias.

Arias, 32, is on trial for murdering Alexander, whom she dated for a year and continued to have a sexual relationship for a year after that. Her attorneys claim that Alexander was abusive and controlling toward Arias, and that she was forced to kill him.

Freeman described how he took a trip with his sister, Alexander, and Arias, and how Alexander had asked him to come along so that he and Arias "would not get physical."

"I don't know that I can say he didn't want to be alone with her, but he liked that when I was there, and my sister was there. They weren't as physical," Freeman said.

Freeman admitted that he had no idea Alexander and Arias had been having a sexual relationship the entire time they were together. He said Alexander never mentioned that to his friends.

In fact, Freeman noted that Alexander was considered to be a church elder when he baptized Arias into the Church of Latter-Day Saints. Both a church elder and a convert were expected to abide by the church's strict law of chastity, which banned any sexual relations outside of marriage.

"One thing people give up in this baptism process was sex," prosecutor Juan Martinez said. "Did you know she was having oral sex with Mr. Alexander at the time of her baptism? Would that be an insincere baptism?"

"She would not be ready to be baptized in that case," Freeman said.

"You were asked about Miss Arias, whether she was worthy of baptism if she was performing oral sex, but what about the elder receiving oral sex?" defense attorney Kirk Nurmi said.

"They would not be worthy of performing that ordinance at that time until they had gone through repentance," Freeman said. "They would go to a discipline council and could face excommunication or a probation period or have their priesthood removed."

Freeman said that Alexander never confessed to having a sexual relationship with Arias.

Freeman's testimony came on the third day of the defense's attempt to paint Alexander as a controlling, sex-obsessed liar who was cruel to Arias. Other witnesses have said that Alexander cheated on other women he dated with Arias, and lied to his friends and family about their relationship.

The defense also had Freeman point out that Alexander was strong and fit. They are expected to conclude that Alexander was physically threatening Arias when she killed him.

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French troops deployed in last Mali rebel strongholds

DOUENTZA, Mali/PARIS (Reuters) - French troops seized the airport in Mali's northern town of Kidal, the last urban stronghold held by Islamist insurgents, as they moved to wrap up the first phase of a military operation to wrest northern Mali from rebel hands.

France has deployed some 4,500 troops in a three-week ground and air offensive to break the Islamist rebels' 10-month grip on major northern towns. The mission is aimed at heading off the risk of Mali being used as a springboard for jihadist attacks in the wider region or Europe.

The French military plans to gradually hand over to a larger African force, tasked with rooting out insurgents in their mountain redoubts near Algeria's border.

Defense Minister Jean-Yves Le Drian said French forces using planes and helicopters defied a sandstorm late on Tuesday to capture the airport but had been prevented by the bad weather from entering the town itself.

"The terrorist forces are pulling back to the Adrar des Ifoghas mountains which are difficult to access," Le Drian told a news conference. "There is support from Chadian and Nigerian troops coming from the south."

The deployment of French troops to remote Kidal puts them in direct contact with pro-autonomy Tuareg MNLA rebels, whose rebellion last year was hijacked by the Islamist radicals. Le Drian said France had established good relations with local Tuareg chieftains before sending in troops.

MNLA leaders say they are ready to fight al Qaeda but many Malians, including the powerful military top brass in the capital Bamako, blame them for the division of the country. They view Paris' liaisons with the Tuaregs with suspicion.

French and Malian troops retook the major Saharan trading towns of Gao and Timbuktu at the weekend.

There were fears that many thousands of priceless ancient manuscripts held in Timbuktu, a UNESCO World Heritage site, might have been lost during the rebel occupation, but experts said the bulk of the texts were safe.

The United States and European governments strongly support the Mali intervention and are providing logistical and surveillance backing but do not intend to send combat troops.

The MNLA rebels, who want greater autonomy for the desert north, said they had moved fighters into Kidal after Islamists left the town earlier this week.

"For the moment, there is a coordination with the French troops," said Moussa Ag Assarid, the MNLA spokesman in Paris.

A spokesman for the Malian army said its soldiers were securing Gao and Timbuktu and were not heading to Kidal.

The MNLA took up arms against the Bamako government a year ago, seeking to carve out a new independent desert state.

After initially fighting alongside the Islamists, by June they had been forced out by their better armed and financed former allies, who include al Qaeda North Africa's wing, AQIM, a splinter wing called MUJWA and Ansar Dine, a Malian group.

RISK OF ATTACKS, KIDNAPPINGS

As the French wind up the first phase of their offensive, doubts remain about just how quickly the U.N.-backed African intervention force can be fully deployed in Mali to hunt down the retreating al Qaeda-allied insurgents. Known as AFISMA, the force is now expected to exceed 8,000 troops.

Foreign Minister Laurent Fabius said France's military operation, codenamed Serval (Wildcat), was planned as a lightning mission lasting a few weeks.

"Liberating Gao and Timbuktu very quickly was part of the plan. Now it's up to the African countries to take over," he told the Le Parisien daily. "We decided to put in the means and the necessary number of soldiers to strike hard. But the French contingent will not stay like this. We will leave very quickly."

One French soldier has been killed in the mission, and Fabius warned that things could now get more difficult, as the offensive seeks to flush out insurgents with experience of fighting in the desert from their wilderness hideouts.

"We have to be careful. We are entering a complicated phase where the risks of attacks or kidnappings are extremely high. French interests are threatened throughout the entire Sahel."

An attack on the In Amenas gas plant in Algeria earlier this month by Islamist fighters opposing the French intervention in Mali led to the deaths of dozens of foreign hostages and raised fears of similar reprisal strikes across North and West Africa.

NEED FOR RECONCILIATION

The French operation has destroyed the Islamists' training camps and logistics bases but analysts say a long term solution for Mali hinges on finding a political settlement between the northern communities and the southern capital Bamako.

Interim President Dioncounda Traore said on Tuesday his government would aim to hold national elections on July 31. Paris is pushing strongly for Traore's government to hold talks with the MNLA, which has dropped its claims for independence.

"The Malian authorities must begin without delay talks with the legitimate representatives of the northern population and non-terrorist armed groups that recognize Mali's integrity," French Foreign ministry spokesman Philippe Lalliot said.

After months of being kept on the political sidelines, the MNLA said they were in contact with West African mediators who are trying to forge a national settlement to reunite Mali.

"We reiterate that we are ready to talk with Bamako and to find a political solution. We want self-determination, but all that will be up to negotiations which will determine at what level both parties can go," Ag Assarid said.

There have been cases in Gao and Timbuktu and other recaptured towns of reprisal attacks and looting of shops and residences belonging to Malian Tuaregs and Arabs suspected of sympathizing with the MNLA and the Islamist rebels.

(Additional reporting John Irish and Emmanuel Jarry in Paris, David Lewis and Pascal Fletcher in Dakar; Writing by David Lewis and Daniel Flynn; Editing by Pascal Fletcher and Rosalind Russell)

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Basketball: Heat scorch Nets 105-85

NEW YORK: LeBron James and the NBA champion Miami Heat ended the Brooklyn Nets' home winning streak in emphatic style Wednesday with a 105-85 triumph at the Barclays Centre.

The Heat shot 51.8 percent from the field and made 11-of-19 from three-point range to notch their 13th straight victory over the Nets -- including a sweep of all three regular-season games on the schedule in this campaign.

Miami bounced back from a double-overtime loss at Boston on Sunday, and halted the Nets' eight-game home winning streak.

Hours after Nets forward Reggie Evans said during his team's morning shoot-around that the Heat's 2012 title was devalued because it came in a lockout-shortened season, the champs showed they remain a cut above.

James scored 24 points with nine rebounds and seven assists. Dwyane Wade added 21 points and Chris Bosh scored 16 for a Miami team that broke open a close game with a 36-14 third quarter.

Brook Lopez, named to the All-Star game in place of injured Rajon Rondo of Boston on Wednesday, scored 21 points and Joe Johnson contributed 16. But the Nets were undone by 19 turnovers, including eight in the key third period.

The Heat continue a four-game road trip on Friday at Indiana and wrap it up on Sunday at Toronto.

-AFP/fl

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Mamata's honeymoon with Gorkha Janamukti Morcha over: Left Front

KOLKATA: In the wake of the pro-Gorkhaland GJM threatening for a "bloodied" agitation, West Bengal's opposition parties have asked the state government to tread cautiously and sought an all party meeting on the issue.

Expressing concern over the developments, leader of the opposition Surjya Kanta Mishra Wednesday appealed both to the Gorkha Janamukti Morcha (GJM) and the Mamata Banerjee government to "exercise restraint" so that the situation does not take an unfortunate turn.

"We would urge the chief minister (Banerjee) to have a more cautious approach on this sensitive manner. It would have been better had she not made unnecessary provocations," Mishra said here.

Calling for an "intensified movement", the GJM Wednesday warned of "violence and bloodbath" if their demand for a separate state of Gorkhaland was not met.

"What will they do? Get the police to fire on us? If that be, we are ready to die," GJM chief Bimal Gurung said, adding: "If there be riots, violence and bloodbath, we are ready for it. But we will not sell our conscience."

Mishra also said the "honeymoon" between Banerjee's Trinamool Congress and the GJM is over.

"It is surprising that the state government is firm on issues on which it should remain soft, while it had been soft in dealing with issues it should have dealt firmly," Mishra said, referring to the "hurried setting up" of the Gorkhaland Territorial Administration (GTA) - a hill council armed with more powers than its predecessor, the Darjeeling Gorkha Hill Council, formed in the late 1980s.

Accusing the Banerjee government of denying the people of the hills the "self-rule" promised in the GTA, Mishra said it was not the chief minister's "prerogative to make announcements and dole out sops in the region".

"The state government should hold discussions with all parties including GJM on this issue," he said.

Meanwhile the Congress too echoed the need for an all-party discussion on the issue.

"It is not the problem concerning only the state government or any political party but a problem concerning the people of the state," state Congress president Pradip Bhattacharya said.

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Sex to burn calories? Authors expose obesity myths

Fact or fiction? Sex burns a lot of calories. Snacking or skipping breakfast is bad. School gym classes make a big difference in kids' weight.

All are myths or at least presumptions that may not be true, say researchers who reviewed the science behind some widely held obesity beliefs and found it lacking.

Their report in Thursday's New England Journal of Medicine says dogma and fallacies are detracting from real solutions to the nation's weight problems.

"The evidence is what matters," and many feel-good ideas repeated by well-meaning health experts just don't have it, said the lead author, David Allison, a biostatistician at the University of Alabama at Birmingham.

Independent researchers say the authors have some valid points. But many of the report's authors also have deep financial ties to food, beverage and weight-loss product makers — the disclosures take up half a page of fine print in the journal.

"It raises questions about what the purpose of this paper is" and whether it's aimed at promoting drugs, meal replacement products and bariatric surgery as solutions, said Marion Nestle, a New York University professor of nutrition and food studies.

"The big issues in weight loss are how you change the food environment in order for people to make healthy choices," such as limits on soda sizes and marketing junk food to children, she said. Some of the myths they cite are "straw men" issues, she said.

But some are pretty interesting.

Sex, for instance. Not that people do it to try to lose weight, but claims that it burns 100 to 300 calories are common, Allison said. Yet the only study that scientifically measured the energy output found that sex lasted six minutes on average — "disappointing, isn't it?" — and burned a mere 21 calories, about as much as walking, he said.

That's for a man. The study was done in 1984 and didn't measure the women's experience.

Among the other myths or assumptions the authors cite, based on their review of the most rigorous studies on each topic:

—Small changes in diet or exercise lead to large, long-term weight changes. Fact: The body adapts to changes, so small steps to cut calories don't have the same effect over time, studies suggest. At least one outside expert agrees with the authors that the "small changes" concept is based on an "oversimplified" 3,500-calorie rule, that adding or cutting that many calories alters weight by one pound.

—School gym classes have a big impact on kids' weight. Fact: Classes typically are not long, often or intense enough to make much difference.

—Losing a lot of weight quickly is worse than losing a little slowly over the long term. Fact: Although many dieters regain weight, those who lose a lot to start with often end up at a lower weight than people who drop more modest amounts.

—Snacking leads to weight gain. Fact: No high quality studies support that, the authors say.

—Regularly eating breakfast helps prevent obesity. Fact: Two studies found no effect on weight and one suggested that the effect depended on whether people were used to skipping breakfast or not.

—Setting overly ambitious goals leads to frustration and less weight loss. Fact: Some studies suggest people do better with high goals.

Some things may not have the strongest evidence for preventing obesity but are good for other reasons, such as breastfeeding and eating plenty of fruits and vegetables, the authors write. And exercise helps prevent a host of health problems regardless of whether it helps a person shed weight.

"I agree with most of the points" except the authors' conclusions that meal replacement products and diet drugs work for battling obesity, said Dr. David Ludwig, a prominent obesity research with Boston Children's Hospital who has no industry ties. Most weight-loss drugs sold over the last century had to be recalled because of serious side effects, so "there's much more evidence of failure than success," he said.

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Online:

Obesity info: http://www.cdc.gov/obesity/data/trends.html

New England Journal: http://www.nejm.org

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Marilynn Marchione can be followed at http://twitter.com/MMarchioneAP

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No Device Eliminates Concussion Risk, Experts Say

As the long-term consequences of concussions become clearer, a cottage industry has popped up to sell athletes and worried parents products designed to mitigate risks of concussions that even helmets cannot prevent.

Despite the bold claims of some companies, however, many experts say the Holy Grail in contact sports -- a device that prevents concussions -- simply does not exist. Indeed, experts say, there is no proof that any current device significantly reduces the risk of concussions beyond the protections already provided by helmets.

"Nightline" found several products for sale online that aim to reduce the risk of concussions or even alert parents and coaches when a kid has supposedly taken a concussion-level hit. The claims the manufacturers make are often breathtakingly reassuring.

Concern about the risk of concussion is mounting at every level of the gridiron from the NFL to colleges and even high schools. Concussions are the most common injury among high school football players.

Jennifer Branin, whose son Tyler Branin is one of the stars of the Woodbridge Warriors high school football team in Irvine, Calif., said "it was scary" the first time he had a concussion.

"He had lost his balance on the field," she said. "He got up and tried to continue, but couldn't keep his balance."

Vanished Abroad: US Woman Missing in Turkey Watch Video

She said the effects of the concussion lingered, causing Tyler to miss a week of school and football practice. Even months later, he complained of difficulty concentrating in class.

Parents such as Jennifer Branin, who is president of the team's booster club, and her husband, Andy Branin, a former college football player himself, were looking for a way to support their son's desire to play football while also keeping him safe.

"He wants to play and, as a mom, you may want to put bubble-wrap around them and protect them forever, but that's not going to happen," she said.

So Jennifer Branin decided to do something. She raised money to buy the team helmet inserts by Unequal Technologies for added protection.

Unequal Technologies, one of the highest profile players in this new market, described its product explicitly on the box as "Concussion Reduction Technology," or "CRT." It is a strip of composite material including bullet-proof Kevlar that is designed to stick inside the helmet as a liner to the existing helmet pads.

Unequal Technologies uses its material in products ranging from padded sleeves to shin guards. The company counts NFL players and X-Games athletes among its fans.

On board as paid spokesmen are Philadelphia Eagles quarterback Michael Vick and James Harrison, a linebacker for the Pittsburgh Steelers. Harrison is one of the hardest-hitting guys in the NFL and said he uses Unequal Technology's liners in his helmet.

"I don't know what it's made of but it works," Harrison says in one of Unequal's promotional videos. "I really don't feel like I'm taking a risk."

Vick wasn't wearing the CRT product when he suffered a season-ending concussion in November, but he has since promised that he will be wearing it when he returns to the field next season.

Rob Vito, founder and CEO of the Kennett Square, Pa.-based company, said he worked with scientists to create a military-grade composite material that can help protect athletes from all kinds of injuries from head to toe.

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