Ubuntu se mete en los celulares con un sistema operativo propio

Al igual que otras plataformas que buscan una convergencia entre el mundo móvil y la PC, Canonical confirmó el arribo de su sistema operativo Ubuntu a los dispositivos móviles. Disponible en una primera instancia como una instalación no oficial para la línea de smartphones Nexus 3, la versión de Linux utilizada en más de 20 millones busca posicionarse como una alternativa ante un mercado dominado por compañías como Apple y Google, junto a las propuestas de Microsoft con Windows Phone y Research in Motion con sus teléfonos BlackBerry.

La compañía dio un primer paso en febrero de 2012 con Ubuntu for Android , una distribución para “mejorar” el Android convencional.

La versión actual es un sistema operativo que sólo comparte con Android el uso de sus drivers (ambos están basados en Linux), pero no usa una máquina virtual Java, por lo que los 700.000 programas con las que cuenta Android no estarán disponibles directamente. Ubuntu tendrá su propia suite de aplicaciones, y permitirá la suma de nuevas que estén programadas en HTML5 o sean nativas.

Canonical también planea lanzar un teléfono de diseño propio que llegaría al mercado en 2014, pero no brindó mayores detalles sobre el fabricante involucrado. Los recientes cambios en la interfaz de Ubuntu, denominada Unity, marcaron una tendencia en la distribución hacia la interacción en pantallas sensibles al tacto, y este lanzamiento representa un primer paso de la distribución para ingresar en el mundo móvil de los smartphones y las tabletas.

Las prestaciones de una PC, en un dispositivo de bolsillo

Según Mark Shuttleworth, CEO de Canonical, en un principio esta versión de Ubuntu apunta a los entusiastas de la plataforma, pero con una rápida expansión hacia el resto de los usuarios. “Por primera vez en la historia los usuarios de los teléfonos celulares pueden tener las prestaciones completas que tiene en una PC, y tenemos una ventaja en esto”, dijo el ejecutivo.

Así lo explica Mark Shuttleworth en video, mostrando los gestos que permiten controlar Ubuntu móvil:

El concepto se asemeja a la modalidad presentada por Motorola con su teléfono Atrix , que se convertía en una PC al ser conectado en una base que servía de conexión con un monitor. A su vez, el móvil también podía ser utilizado como una notebook mediante un dispositivo denominado lapdock.

Aún no disponible para su descarga, la presentación formal de Ubuntu para teléfonos ante el público será en la feria Consumer Electronic Show de Las Vegas, en donde LA NACION estará presente para la cobertura de los primeros lanzamientos del año que realizará la industria.

En busca del podio móvil

Con los dispositivos basados en iOS y Android, varias compañías disputan ser la alternativa a las plataformas dominantes. Microsoft busca de la mano de Nokia posicionar a Windows Phone junto a fabricantes como HTC y Samsung. La compañía de Redmond también desea aprovechar la integración con Windows 8 para sacar provecho de su dominio en el mundo de las PC, un segmento en lento retroceso frente a los teléfonos inteligentes y tabletas.

En este punto, la integración entre las PC y los dispositivos móviles también forman parte de los objetivos de Apple, que replicó el exitoso modelo App Store en su línea de computadoras con Mac OS X, utilizado en el iPhone y la tableta iPad, mientras que Google mantiene su apuesta en su plataforma basada en la nube con servicios como Gmail y Drive, entre otros.

Por su parte, Research in Motion presentará su nueva plataforma BB10 , un demorado lanzamiento que tendrá lugar a fines de este mes y con el que busca recuperar el terreno perdido en los últimos años con un renovado teléfono móvil tactil basado en el sistema operativo QNX, utilizado en su tableta Playbook.

Dentro de este pelotón de contendientes también se encuentra Firefox OS , un competidor que más se asemeja a la filosofía de la plataforma de Canonical y que ofrece un sistema operativo basado en el navegador web de la fundación Mozilla. Cuenta con el apoyo de las principales operadoras de telecomunicaciones y apunta a contar con un teléfono de costo accesible para mercados emergentes.

Por su parte, un grupo de desarrolladores responsables de Meego, la plataforma utilizada por Nokia para el N9, se reunieron para presentar a Sailfish OS , un sistema operativo basado en Linux que se encuentra en una incipiente etapa de desarrollo y que planea tener también, al igual que Firefox OS y Ubuntu, un teléfono para mediados de este año.

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Julianne Hough: I Was Physically Abused as a Child

By Mike Fleeman

01/02/2013 at 04:45 PM EST

When Julianne Hough was 10 years old, she lived in London, away from her parents in Utah, studying dance.

That's when the abuse began, she says.

"I was abused, mentally, physically, everything," she says in Cosmopolitan magazine's February issue, on newsstands Jan. 8.

While attending the prestigious Italia Conti Academy of Arts, she says the adults around her took advantage of her being without parental supervision: "I was 10 years old looking like I was 28, being a very sensual dancer."

"I was a tormented little kid who had to put on this sexy facade because that was my job and my life," she adds. "But my heart was the same, and I was this innocent little girl. I wanted so much love."

The actress, now 24, says the abuse became worse "when I started hitting puberty, when I started becoming a woman and stopped being a little girl."

Her classmates included future Dancing with the Stars pros Mark Ballas and Julianne's brother Derek Hough, both also children at the time. They had formed their own pop music group when Julianne was 12 performing in the U.S. and the U.K.

Hough declines to say who abused her or provide other details.

"I'm a very forgiving person, and I don't want to hurt anybody," she says. "What's past is past."

But the painful emotions surfaced during filming of her latest movie, Safe Haven, opening Feb. 14, about a girl who survives an abusive ex-boyfriend and accepts the love of a widower, played by Josh Duhamel.

During one particularly difficult scene, she says, "I went from bawling to containing to laughing to crying again. Josh was crying. I think it was the most therapeutic moment of my life."

As for her own love life, Hough says that she and boyfriend Ryan Seacrest work to find time for each other around their busy schedules.

"We love what we do," she says. "We take pride in giving it our all, but then when we're alone, we really focus in on going to dinners and being extra-romantic and affectionate and just being there for each other."

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Brain image study: Fructose may spur overeating

This is your brain on sugar — for real. Scientists have used imaging tests to show for the first time that fructose, a sugar that saturates the American diet, can trigger brain changes that may lead to overeating.

After drinking a fructose beverage, the brain doesn't register the feeling of being full as it does when simple glucose is consumed, researchers found.

It's a small study and does not prove that fructose or its relative, high-fructose corn syrup, can cause obesity, but experts say it adds evidence they may play a role. These sugars often are added to processed foods and beverages, and consumption has risen dramatically since the 1970s along with obesity. A third of U.S. children and teens and more than two-thirds of adults are obese or overweight.

All sugars are not equal — even though they contain the same amount of calories — because they are metabolized differently in the body. Table sugar is sucrose, which is half fructose, half glucose. High-fructose corn syrup is 55 percent fructose and 45 percent glucose. Some nutrition experts say this sweetener may pose special risks, but others and the industry reject that claim. And doctors say we eat too much sugar in all forms.

For the study, scientists used magnetic resonance imaging, or MRI, scans to track blood flow in the brain in 20 young, normal-weight people before and after they had drinks containing glucose or fructose in two sessions several weeks apart.

Scans showed that drinking glucose "turns off or suppresses the activity of areas of the brain that are critical for reward and desire for food," said one study leader, Yale University endocrinologist Dr. Robert Sherwin. With fructose, "we don't see those changes," he said. "As a result, the desire to eat continues — it isn't turned off."

What's convincing, said Dr. Jonathan Purnell, an endocrinologist at Oregon Health & Science University, is that the imaging results mirrored how hungry the people said they felt, as well as what earlier studies found in animals.

"It implies that fructose, at least with regards to promoting food intake and weight gain, is a bad actor compared to glucose," said Purnell. He wrote a commentary that appears with the federally funded study in Wednesday's Journal of the American Medical Association.

Researchers now are testing obese people to see if they react the same way to fructose and glucose as the normal-weight people in this study did.

What to do? Cook more at home and limit processed foods containing fructose and high-fructose corn syrup, Purnell suggested. "Try to avoid the sugar-sweetened beverages. It doesn't mean you can't ever have them," but control their size and how often they are consumed, he said.

A second study in the journal suggests that only severe obesity carries a high death risk — and that a few extra pounds might even provide a survival advantage. However, independent experts say the methods are too flawed to make those claims.

The study comes from a federal researcher who drew controversy in 2005 with a report that found thin and normal-weight people had a slightly higher risk of death than those who were overweight. Many experts criticized that work, saying the researcher — Katherine Flegal of the Centers for Disease Control and Prevention — painted a misleading picture by including smokers and people with health problems ranging from cancer to heart disease. Those people tend to weigh less and therefore make pudgy people look healthy by comparison.

Flegal's new analysis bolsters her original one, by assessing nearly 100 other studies covering almost 2.9 million people around the world. She again concludes that very obese people had the highest risk of death but that overweight people had a 6 percent lower mortality rate than thinner people. She also concludes that mildly obese people had a death risk similar to that of normal-weight people.

Critics again have focused on her methods. This time, she included people too thin to fit what some consider to be normal weight, which could have taken in people emaciated by cancer or other diseases, as well as smokers with elevated risks of heart disease and cancer.

"Some portion of those thin people are actually sick, and sick people tend to die sooner," said Donald Berry, a biostatistician at the University of Texas MD Anderson Cancer Center in Houston.

The problems created by the study's inclusion of smokers and people with pre-existing illness "cannot be ignored," said Susan Gapstur, vice president of epidemiology for the American Cancer Society.

A third critic, Dr. Walter Willett of the Harvard School of Public Health, was blunter: "This is an even greater pile of rubbish" than the 2005 study, he said. Willett and others have done research since the 2005 study that found higher death risks from being overweight or obese.

Flegal defended her work. She noted that she used standard categories for weight classes. She said statistical adjustments were made for smokers, who were included to give a more real-world sample. She also said study participants were not in hospitals or hospices, making it unlikely that large numbers of sick people skewed the results.

"We still have to learn about obesity, including how best to measure it," Flegal's boss, CDC Director Dr. Thomas Frieden, said in a written statement. "However, it's clear that being obese is not healthy - it increases the risk of diabetes, heart disease, cancer, and many other health problems. Small, sustainable increases in physical activity and improvements in nutrition can lead to significant health improvements."

___

Online:

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

___

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

Mike Stobbe can be followed at http://twitter.com/MikeStobbe

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"Cliff" deal drives Wall Street rally to start new year

NEW YORK (Reuters) - U.S. stocks kicked off the new year with their best day in over a year on Wednesday, sparked by relief over a last-minute deal in Washington to avert the "fiscal cliff" of tax hikes and spending cuts that threatened to derail the economy's growth.

In 2013's first trading session, the S&P 500 achieved its biggest one-day gain since December 20, 2011, pushing the benchmark index to its highest close since September 14.

Concerns over Washington's ability to sidestep the cliff had driven the S&P 500 down for five straight sessions, before signs that a resolution was near sent the benchmark index higher on the final trading session of 2012.

The CBOE Volatility Index or the VIX <.vix>, a gauge of investor anxiety, dropped 18.5 percent to 14.68 at the close. The VIX has fallen 35.4 percent over the past two sessions.

The Dow Jones industrial average <.dji> jumped 308.41 points, or 2.35 percent, to 13,412.55 at the close. The Standard & Poor's 500 Index <.spx> gained 36.23 points, or 2.54 percent, to 1,462.42. The Nasdaq Composite Index <.ixic> climbed 92.75 points, or 3.07 percent, to end at 3,112.26.

U.S. markets were closed on Tuesday for New Year's Day.

Market breadth reflected the strong rally, with 10 stocks rising for every one that fell on the New York Stock Exchange. All 10 of the S&P 500 industry sector indexes gained at least 1 percent. The S&P financial index <.gspf> shot up 2.9 percent.

The S&P Information Technology index <.gspt> gained 3.2 percent, including Hewlett-Packard , which climbed 5.4 percent to $15.02. HP's gain followed a miserable 2012 when the stock fell nearly 45 percent as one of the worst performers on the S&P 500 for 2012.

On Tuesday, Congress passed a bill to prevent huge tax hikes and delay spending cuts that would have pushed the world's largest economy off a "fiscal cliff" and possibly into recession.

The vote avoided steep income-tax increases for a majority of Americans, but failed to resolve a major showdown over cutting the budget deficit, leaving investors and businesses with only limited clarity about the outlook for the economy. Spending cuts of $109 billion in military and domestic programs were temporarily delayed, and another fight over raising the U.S. debt limit also looms.

"We got through the fiscal cliff. The next big thing, and probably more contentious thing, is negotiating the debt ceiling and possibly entitlement reform in early 2013," said Jim Russell, senior equity strategist for U.S. Bank Wealth Management in Cincinnati.

Hard choices about budget cuts and the critical need to raise the debt ceiling will confront Congress about the same time in two months "so the fur will be flying," Russell said.

U.S. stocks ended 2012 with the S&P 500 up 13.4 percent for the year, as investors largely shrugged off worries about the fiscal cliff. For the year, the Dow gained 7.3 percent and the Nasdaq jumped 15.9 percent.

Bank shares rose following news that U.S. regulators are close to securing another multibillion-dollar settlement with the largest banks to resolve allegations that they unlawfully cut corners when foreclosing on delinquent borrowers.

Bank of America Corp rose 3.7 percent to $12.03 and Citigroup Inc gained 4.3 percent to $41.25. The KBW bank index <.bkx> rose 3.2 percent.

Shares of Zipcar Inc surged 47.8 percent to $12.18 after Avis Budget Group Inc said it would buy Zipcar for about $500 million in cash to compete with larger rivals Hertz and Enterprise Holdings Inc. Avis advanced 4.8 percent to $20.77.

Shares of Apple rose 3.2 percent to $549.03, helping to lift the S&P information technology index <.gspt> up 3.2 percent following a report that the most valuable tech company has started testing a new iPhone and a new version of its iOS software.

Economic data from the Institute for Supply Management showed U.S. manufacturing ended 2012 on an upswing despite fears about the fiscal cliff, but the Commerce Department reported that construction spending fell in November for the first time in eight months.

Volume was heavy, with about 7.8 billion shares traded on the New York Stock Exchange, the NYSE MKT and the Nasdaq, well above the 2012 daily average of 6.42 billion.

(Reporting by Chuck Mikolajczak; Editing by Jan Paschal)

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Dozens of Syrians Killed in Explosions Around Damascus

Andoni Lubaki/Associated Press

Rebel fighters patrol a neighborhood in Aleppo on Wednesday.

BEIRUT, Lebanon — Dozens of Syrians were killed or wounded in an explosion at a gas station east of Damascus, the Syrian capital, on Wednesday, and explosions in another Damascus suburb killed at least six people and wounded many more, including women and children, according to videos and reports from antigovernment activists.

The violence came as the United Nations released a study showing that more than 60,000 people had been killed in Syria’s 22-month-old conflict, a third higher than estimates by antigovernment activist groups.

Also on Wednesday, the family of James Foley, a reporter for the Global Post Web site, announced that Mr. Foley had been kidnapped on Nov. 22 by unidentified gunmen in northwest Syria. Mr. Foley had survived an abduction in Libya while covering the conflict there.

A recent flurry of diplomatic activity by Russia, the United Nations’ special envoy and others aimed at finding a political solution appeared to founder in recent days as neither Bashar al-Assad, the Syrian president, nor his opponents expressed a willingness to make concessions to end the bloody conflict.

The explosion near Damascus, which witnesses blamed on an airstrike, took place in a heavily contested suburban area. It hit a gas station where scores of people had lined up for fuel, which had just become available there after about a month, residents said. Videos posted by antigovernment activists showed charred bodies.

One man, using the nickname Abu Fuad, said in a telephone interview that he had just filled up his gas tank and was driving away when he heard the screech of fighter jets.

He was less than a quarter mile away when he heard the explosions, he said.

“There were many cars waiting their turn,” he said. “Yesterday, we heard that the government sent fuel to the gas station here, so all the people around came to fill up their cars.”

In a sign of the depth of distrust the conflict has spawned, Abu Fuad suggested that restocking the station was a government ruse. “They sent fuel as a trap,” he said.

In northern Syria, rebels used rockets to attack the Taftanaz military airport, a long-contested area in the province of Idlib, activists reported. Rebels have also stepped up attacks on airports in the neighboring province of Aleppo, trying to disrupt the warplanes and helicopters that government forces increasingly rely on for attacks, and even for supply lines, in the north.

The United Nations study suggested that the human toll of the war was even greater than previously estimated. Two days ago, the Syrian Observatory for Human Rights, a rebel group that tracks the war from Britain, reported 45,000 deaths, mostly civilian, since the conflict began in March 2011.

“The number of casualties is much higher than we expected, and is truly shocking,” the United Nations high commissioner for human rights, Navi Pillay, said in a statement after her agency released the study.

“We must not compound the existing disaster by failing to prepare for the inevitable — and very dangerous — instability that will occur when the conflict ends,” she added. To avoid repeating the experience of collapsed states like Afghanistan, Iraq and Somalia, she said, “serious planning needs to get under way immediately, not just to provide humanitarian aid to all those who need it, but to protect all Syrian citizens from extrajudicial reprisals and acts of revenge.”

The study’s surprisingly high death toll reflected only those killings in which victims had been identified by their full name, and the date and location of their death had been recorded, leaving the possibility of many more dead.

Independent researchers compiled reports of more than 147,000 killings in Syria’s conflict from seven sources, including the government. When duplicates were removed, there remained a list of 59,648 people killed between March 2011 and the end of November.

Meanwhile, John Foley, James Foley’s father, stressed that his son was an “objective journalist” and issued a plea to his captors to contact the family so that they can work for his release.

“We want Jim to come safely home, or at least we need to speak with him to know he’s O.K.,” John Foley said. “Jim is an objective journalist and we appeal for the release of Jim unharmed. To the people who have Jim, please contact us so we can work together toward his release.”

Hwaida Saad contributed reporting.

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Four Android productivity apps you should use in 2013

Happy New Year! Like most folks, I am working on some resolutions for 2013. One resolution I have is to be more productive. One way I am going to do this is by using my Android phone better. Now there are apps that I have, but really have not used to their fullest. As I work on this resolution, I might discover even better apps. For now I will focus on these impressive apps that can make anyone more productive.

I use Hootsuite on the computer, but rarely find myself engaging with it on my smartphone. With Hootsuite, you can manage Twitter, Facebook, LinkedIn, and Foursquare accounts. The free version allows for up to five accounts and one member of your team to access the account. There is a pro version with a monthly fee, in which you can have more accounts and team members and helpful analytics tools.

The design of the app is very good. If you sync the web version to mobile, you will have everything automatically downloaded to the phone. When viewing content, you swipe left or right to change columns or streams. If you are in the middle of a stream, simply tap the top menu bar to automatically return to the top. The app allows for multiple profiles and scheduled tweets. My goal is to keep up with my feeds and tweets in real-time rather than waiting until I get to a computer.

Another web service that I started to use, but find myself not using it to the fullest. Producteev is a web-based task management service. With Producteev you can work as an individual or in a team by setting up workspaces and then organize tasks by labels. For each task you can assign a priority, due date, and share with team members, if you have any. Overall, this is a great service, since I like making lists, even though I rarely remember having made them.

The Producteev app is available for all platforms. The app has a very clean interface and is easy to find tasks. Probably the best way to keep up with tasks is to use the different widget for the home screen. Seeing the widgets will help keep those key tasks in the forefront of your mind. The app will work offline and syncs in the background.

I read blogs every single day, especially those related to new apps, Android, or mobile news. The only way I can do that is via my Google Reader. I find myself trying to catch up each day on the computer (just like with Twitter activity) when I would be better off reading a little bit over time during the day. NewsRob is a Google Reader that I have had for years. The interface is very clean and easy to use. The developer created a bunch of customizations options, which really make this reader stand out.

With NewsRob you can set up a notification of new articles, how you synchronize with Google and when, how many articles to keep in your cache, and more. If you set up folders within Google Reader, NewsRob will download the folders, too. This enables you to read the posts by blog or folder. The app provides a very clean blogpost display optimized for smaller screens. With each post you can zoom in or out, mark a post read or unread, view in the browser, and share the link to email or services such as Evernote. There is a free version of the app.

The last task I need to work on to be more productive is to keep up with the calendar. I find myself checking on the computer, after the fact, finding out that I am either late or forgot about a meeting or appointment. Using Google calendar is a good place to start, but I have not found the standard calendar app on my Droid was all that helpful.

Business Calendar is a very capable calendar app that has a ton of features. The app lets you view your calendar in a number of different views, and has search and favorite-calendar features, to name a few. The option of viewing different calendars, color coding and being able to easily add, delete, and edit events is helpful. The ability to use widgets for reminders is important. The pro version has over 10 different sizes and allows for the import or export of calendar files in the iCalendar format. Business Calendar also has a free version.

So my top goal or resolution for 2013 is to be more productive. I think using these apps more will help me accomplish that goal. Are there any apps you have but not using to their fullest? What resolutions do you have for 2013?

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Restaurateur Joe Bastianich Blogs: Why Quitting Can Be the Best Start to Your New Year

Celebrity Blog

01/01/2013 at 04:40 PM EST

Joe Bastianich is a successful restaurateur, vineyard owner and author of the memoir Restaurant Man. He's also a judge on MasterChef, which challenges home cooks to prove they can cut it in top professional kitchens. This week he's blogging about helping people keep one big New Year's resolution – quitting smoking.

There are many things I'm looking forward to in 2013, both personally and professionally. Plans for new restaurants in the U.S., including Eataly Chicago, are underway, and I'm gearing up for the 2013 Ironman world championships in Hawaii – if I'm lucky enough to get a spot! But one big life change kick-started all of it 15 years ago, my decision to quit smoking. This choice is something many of you are probably also considering in the New Year and trust me, it's worth it.

You might be surprised to hear that those in the restaurant industry – people who rely on their palate for work every single day – have a higher population of smokers than many other occupation in the U.S. I used to be one of those smokers.

It may be the hours we keep, the high stress levels or being surrounded by triggers like food and wine all the time. Whatever it is, the high amount of smoking in the industry makes it hard to say no to a cigarette when there's always someone asking you to join them on a smoke break. As a former smoker, I've not only seen how many people in the hospitality business struggle with this addiction, but I've been in their shoes.

That's why I want to share my story and help people kick the habit for good. But, it's easier said than done, right?

My Story

I was a smoker for 18 years. At my worst, I smoked up to two-and-a-half packs of cigarettes a day, buying a third pack on my way home from Babbo each night. Like many smokers, I tried to quit… and quit… and quit again. I tried over a dozen times, but I would always eventually cave to the cravings.

It wasn't until my first child was born that the reality of my bad habit hit hard. My wife laid down the law, so to speak, and helped me realize I had to get healthy if I wanted to be a good role model for my new family. At the same time, I realized my passion for food and wine was being compromised; my senses were becoming dull from smoking, and in the food and wine industry these senses are crucial.

I've had a lot of challenges in my life, but this was one of the biggest. I was finally able to give up cigarettes with the help of quit smoking products – and support from my friends and family. I need to give special recognition to my wife for giving me the final push! Support was crucial in my quitting, which is why I'm partnering with Blueprint to Quit – a comprehensive quit smoking program available only at Walmart – to help others get started on the right foot. The program can help with physical cravings associated with smoking and provides behavioral support online when you need it.

Quitting enabled me to focus on making lifestyle changes I associated with smoking, things like having a cup of coffee, wine tasting and late nights at the restaurant. It was difficult, but I'm happy to report that 15 years later I'm still smoke-free. I can truly say I'm healthier today at age 44 than when I was in my 20s.

To all the smokers reading this: you CAN quit. Things that helped me were identifying situations where I would smoke and replacing them with other activities or eliminating them all together and making my plan public to friends and family so they could keep me on track.

If there's one thing to take away from this, it's don't focus on the big picture. Instead, take it one cigarette at a time and be proud of yourself for even making the decision to try to quit.

Anything worthwhile is difficult, and overcoming an addiction like smoking may seem impossible, but I can tell you that some of the best years of my life have been smoke-free.

Cheers to a happy and healthy New Year.

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Brain image study: Fructose may spur overeating

This is your brain on sugar — for real. Scientists have used imaging tests to show for the first time that fructose, a sugar that saturates the American diet, can trigger brain changes that may lead to overeating.

After drinking a fructose beverage, the brain doesn't register the feeling of being full as it does when simple glucose is consumed, researchers found.

It's a small study and does not prove that fructose or its relative, high-fructose corn syrup, can cause obesity, but experts say it adds evidence they may play a role. These sugars often are added to processed foods and beverages, and consumption has risen dramatically since the 1970s along with obesity. A third of U.S. children and teens and more than two-thirds of adults are obese or overweight.

All sugars are not equal — even though they contain the same amount of calories — because they are metabolized differently in the body. Table sugar is sucrose, which is half fructose, half glucose. High-fructose corn syrup is 55 percent fructose and 45 percent glucose. Some nutrition experts say this sweetener may pose special risks, but others and the industry reject that claim. And doctors say we eat too much sugar in all forms.

For the study, scientists used magnetic resonance imaging, or MRI, scans to track blood flow in the brain in 20 young, normal-weight people before and after they had drinks containing glucose or fructose in two sessions several weeks apart.

Scans showed that drinking glucose "turns off or suppresses the activity of areas of the brain that are critical for reward and desire for food," said one study leader, Yale University endocrinologist Dr. Robert Sherwin. With fructose, "we don't see those changes," he said. "As a result, the desire to eat continues — it isn't turned off."

What's convincing, said Dr. Jonathan Purnell, an endocrinologist at Oregon Health & Science University, is that the imaging results mirrored how hungry the people said they felt, as well as what earlier studies found in animals.

"It implies that fructose, at least with regards to promoting food intake and weight gain, is a bad actor compared to glucose," said Purnell. He wrote a commentary that appears with the federally funded study in Wednesday's Journal of the American Medical Association.

Researchers now are testing obese people to see if they react the same way to fructose and glucose as the normal-weight people in this study did.

What to do? Cook more at home and limit processed foods containing fructose and high-fructose corn syrup, Purnell suggested. "Try to avoid the sugar-sweetened beverages. It doesn't mean you can't ever have them," but control their size and how often they are consumed, he said.

A second study in the journal suggests that only severe obesity carries a high death risk — and that a few extra pounds might even provide a survival advantage. However, independent experts say the methods are too flawed to make those claims.

The study comes from a federal researcher who drew controversy in 2005 with a report that found thin and normal-weight people had a slightly higher risk of death than those who were overweight. Many experts criticized that work, saying the researcher — Katherine Flegal of the Centers for Disease Control and Prevention — painted a misleading picture by including smokers and people with health problems ranging from cancer to heart disease. Those people tend to weigh less and therefore make pudgy people look healthy by comparison.

Flegal's new analysis bolsters her original one, by assessing nearly 100 other studies covering almost 2.9 million people around the world. She again concludes that very obese people had the highest risk of death but that overweight people had a 6 percent lower mortality rate than thinner people. She also concludes that mildly obese people had a death risk similar to that of normal-weight people.

Critics again have focused on her methods. This time, she included people too thin to fit what some consider to be normal weight, which could have taken in people emaciated by cancer or other diseases, as well as smokers with elevated risks of heart disease and cancer.

"Some portion of those thin people are actually sick, and sick people tend to die sooner," said Donald Berry, a biostatistician at the University of Texas MD Anderson Cancer Center in Houston.

The problems created by the study's inclusion of smokers and people with pre-existing illness "cannot be ignored," said Susan Gapstur, vice president of epidemiology for the American Cancer Society.

A third critic, Dr. Walter Willett of the Harvard School of Public Health, was blunter: "This is an even greater pile of rubbish" than the 2005 study, he said. Willett and others have done research since the 2005 study that found higher death risks from being overweight or obese.

Flegal defended her work. She noted that she used standard categories for weight classes. She said statistical adjustments were made for smokers, who were included to give a more real-world sample. She also said study participants were not in hospitals or hospices, making it unlikely that large numbers of sick people skewed the results.

"We still have to learn about obesity, including how best to measure it," Flegal's boss, CDC Director Dr. Thomas Frieden, said in a written statement. "However, it's clear that being obese is not healthy - it increases the risk of diabetes, heart disease, cancer, and many other health problems. Small, sustainable increases in physical activity and improvements in nutrition can lead to significant health improvements."

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Online:

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

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

Mike Stobbe can be followed at http://twitter.com/MikeStobbe

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House Republicans balk at "fiscal cliff" deal

WASHINGTON (Reuters) - Washington's last-minute scramble to step back from a "fiscal cliff" ran into trouble on Tuesday as Republicans in the House of Representatives balked at a deal to avert a budget crisis.

Republican leaders in the House said they might try to change the bill approved by the Senate which voted to raise taxes on the wealthy in a late-night show of unity.

That would set up a high-stakes game of chicken between the two chambers and risk a stinging rebuke from financial markets that are due to open in Asia in six hours.

The bill drew overwhelming support from Republicans and Democrats alike in the Senate when it passed by a vote of 89 to 8. But Majority Leader Eric Cantor, the No. 2 Republican in the House, told reporters after huddling with other Republicans that he does not support the measure.

Republicans said they might try to add more spending cuts to the bill, which contains over $600 billion in tax increases but only around $12 billion in spending cuts.

With the Senate adjourned until Thursday, it appeared possible that Congress could push the country over the "fiscal cliff" after all, despite months of effort.

Republicans could face a backlash if they scuttle the deal. Income tax rates technically rose back to 1990s levels for all Americans at midnight, and across-the-board spending cuts on defense and domestic programs are due to kick in on Wednesday.

Economists say the $600 billion combination of tax cuts and spending cuts could push the economy into recession, and public opinion polls show Republicans would shoulder the blame.

Lingering uncertainty over U.S. fiscal policy has unnerved investors and depressed business activity for months.

Financial markets have staved off a steep plunge on the assumption that Washington would ultimately avoid pushing the country off the fiscal cliff into a recession.

With financial markets closed for the New Year's Day holiday, lawmakers have only Tuesday to close the deal before Wall Street has time to weigh in.

"My district cannot afford to wait a few days and have the stock market go down 300 points tomorrow if we don't get together and do something," Representative Steve Cohen, a Democrat from Tennessee, said on the House floor.

The bill passed by the Democratic-led Senate at around 2 a.m. would raise income taxes on families earning more than $450,000 per year and limit the amount of deductions they can take to lower their tax bill.

Low temporary rates that have been in place for less affluent taxpayers for the past decade would be made permanent, along with a range of targeted tax breaks put in place by President Barack Obama in the depths of the 2009 recession.

However, workers would see up to $2,000 more taken out of their paychecks annually as a temporary payroll tax cut was set to expire.

(Additional reporting by Thomas Ferraro; Writing by Andy Sullivan; Editing by Alistair Bell and Jackie Frank)

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Laos May Bear Cost of a Chinese Railroad

OUDOM XAI, Laos — Wang Quan, the new Chinese owner of a hotel in this farm town tucked into the tropical mountains of northern Laos, is hoping that the first of 20,000 Chinese workers will arrive here soon to start construction on a new railroad.

Justin Mott for The New York Times

A Chinese construction truck passed through a small Hmong village on Route 13 in Oudom Xai Province, Laos.

The Chinese-financed railway is to snake its way through dozens of tunnels and bridges, eventually linking southern China to Bangkok, the capital of Thailand, and then on to the Bay of Bengal in Myanmar, significantly expanding China’s already enormous trade with Southeast Asia.

But Mr. Wang may have to wait a little longer to make his fortune from all the Chinese expected to descend on this obscure corner of Laos about 50 miles from the nearest border with China. Even though the project has run into some serious objections from international development organizations, most experts expect it to go ahead anyway. That is because China considers it vital to its strategy of pulling Southeast Asia closely into its orbit and providing Beijing with another route to transport oil from the Middle East.

The crucial connection would run through Oudom Xai between Kunming, the capital of China’s southern province of Yunnan, and the Laotian capital, Vientiane.

“China wants a fast-speed rail — Kunming to Vientiane,” George Yeo, a former foreign minister of Singapore, said in a recent speech to the Association of Southeast Asian Nations Business Club in Bangkok.

Mr. Yeo, chairman of Kerry Logistics Network, a major Asian freight and distribution company, is considered one of the best-informed experts on the expansion of new Asia trading routes. “The big objective is Bangkok,” he said. “It’s a huge market, lots of opportunities. From there, Bangkok to Dawei in Myanmar — that will enable China to bypass the Malacca Straits,” a potential choke point between the Indian Ocean and China’s east coast.

But China is not particularly interested in sharing much of the wealth the railroad would generate. Most of the benefits, critics say, would flow to China while most of the costs would be borne by the host nation. The price tag of the $7 billion, 260-mile rail project, which Laos will borrow from China, is nearly equal to the tiny $8 billion in annual economic activity in Laos, which lacks even a rudimentary railroad and whose rutted road system is largely a leftover from the French colonial era.

In mid-November, when Prime Minister Wen Jiabao of China visited Vientiane for a summit meeting of European and Asian leaders, he was expected to attend a groundbreaking for the railroad. The ceremony did not take place.

An assessment of the rail project by a consultant for the United Nations Development Program said the terms of the financing offered by China’s Export-Import Bank were so onerous they put Laos’s “macroeconomic stability in danger.” At the same time, the construction through northern Laos would turn the countryside into “a waste dump,” the consultant’s report said. “An expensive mistake” if signed under the terms on offer, the report concluded.

As collateral for the loan, Laos was bound to provide China with minerals, including potash and copper.

Other international donors echoed the findings. “Partners, including the Asian Development Bank and the World Bank, expressed concern, and the International Monetary Fund was here and said, ‘You have to be very careful,’ ” said an Asian diplomat briefed on the reservations expressed to the Laotian government.

Nonetheless, the National Assembly has approved the project as the nation’s part in the much broader trans-Asian rail agreement signed by nearly 20 Asian countries in 2006. While the workings of the Communist Party that runs Laos are extremely opaque, diplomats here said, the project is most strongly backed by the pro-China deputy prime minister, Somsavat Lengsavad. Efforts to interview Mr. Somsavat were unsuccessful.

China’s exploding trade with Southeast Asia reached nearly $370 billion in 2011, double that of the United States in the same year. By 2015, when the Southeast Asian countries aim to have completed an economic community, China projects that its trade with the region will equal about $500 billion.

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