Mars Rover Celebrates Milestone on Red Planet

It was never supposed to last this long. When the Mars rover Opportunity settled on the Martian surface nine years ago today, mission managers at NASA said they would be pleased if it lasted for 90 days.

Instead, it's been 3,201 days, and still counting. The rover has driven 22.03 miles, mostly at a snail's pace, from one crater to another, stopping for months at a time in the frigid Martian winters. The six motorized wheels, rated to turn 2.5 million times, have lasted 70 million, and are all still working.

"Opportunity is still in very good health, especially considering what it's gone through," said John Callas, manager of NASA's Mars Exploration Rover project. The surface of Mars is a pretty tough place; there can be temperature fluctuations of a hundred degrees each day. That's pretty hard on the hardware."

Video: '7 Minutes of Terror: A Landing on Mars

When Opportunity and its twin rover, Spirit, reached Mars in January 2004, there was a fair bit of sniping that NASA, with all that 90-day talk, was playing down expectations. It escalated when Steve Squyres of Cornell University, the principal investigator for the missions, said things like, "We're on Sol 300 of a 90-Sol mission." (A Sol is a day on Mars, and lasts 24 hours, 39 minutes.) Callas and others have insisted that the prediction was based on engineering, not a nod to public relations.

"There was an expectation that airfall dust would accumulate on the rover, so that its solar panels would be able to gather less electricity," said Callas. "We saw that on Pathfinder," a small rover that landed on Mars in 1997." The cold climate was also expected to be hard on the rovers' batteries, and changes in temperature from night to day would probably pop a circuit or two.

Instead, the temperatures weren't quite as tough as engineers had expected, and the rovers proved tougher. They did become filthy as the red Martian dust settled on them, reducing the sunlight on the solar panels -- but every now and then a healthy gust came along, surprising everyone on Earth by cleaning the ships off.

Click Here for Pictures: Postcards From Mars

Spirit, in hilly territory on the other side of the planet, finally got stuck in crusty soil in 2009, and its radio went silent the next year. But Opportunity, though it's had some close calls, is -- well, you remember those commercials about the Energizer bunny.

So what do you do with an aging rover on a faraway planet? You keep using it. In its first weeks, NASA said Opportunity found chemical proof that there had once been standing water on the surface of Mars -- good news if you're looking for signs that the planet could once have been friendly to life. Since then, it's been sent to other places, with rocks and soil that are probably older, and with clay that may have been left by ancient rivers.

About 20 NASA staff members still work full-time on Opportunity at the Jet Propulsion Laboratory in Pasadena, Calif. Another 60 split their time between Opportunity and other projects, such as the Curiosity rover that landed last August. About 100 scientists, doing research on Mars, pop in and out.

In a few months, Callas said, Opportunity will head to an area nicknamed Cape Tribulation. The clay there could be rich in the minerals suggestive of past life.

They haven't done much to mark the ninth anniversary or the 3,200th Martian day, just a get-together earlier this week during a previously scheduled science conference. After that, Callas said, it was back to work.

"It's like keeping your car going," he said, "without ever having a chance to change the oil."

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Violence flares on anniversary of Egypt uprising

CAIRO/ALEXANDRIA (Reuters) - Protesters clashed with police across Egypt on Friday on the second anniversary of the revolt that toppled Hosni Mubarak, taking to the streets against an elected Islamist president whose opponents say is trampling over the new democracy.

At least 61 civilians and 32 security personnel were hurt in violence in Cairo, Alexandria and Suez as police fired tear gas and protesters pelted them with stones, the Interior Ministry said.

Street battles also broke out in Ismaila, where the Muslim Brotherhood's political party offices were torched.

Thousands of opponents of Mursi and his Brotherhood allies massed in Cairo's Tahrir Square - the cradle of the uprising against Mubarak - to revive the demands of a revolution they say has been betrayed by Islamists.

The January 25 anniversary showcased the divide between the Islamists and their secular foes that is hindering President Mohamed Mursi's efforts to revive an economy in crisis and reverse a plunge in Egypt's currency by enticing back investors and tourists.

Inspired by Tunisia's popular uprising, Egypt's revolution spurred further revolts across the Arab world. But the sense of common purpose that united Egyptians two years ago has given way to internal strife that has only worsened and last month triggered lethal street battles.

Before dawn on Friday, police battled protesters who threw petrol bombs and firecrackers as they tried to approach a wall blocking access to government buildings near Tahrir Square.

Clouds of tear gas fired by police filled the air. At one point, riot police used one of the incendiaries thrown at them to set ablaze at least two tents erected by the youths, a Reuters witness said.

Clashes between stone-throwing youths and the police continued in streets around the square into the day. Ambulances ferried away a steady stream of casualties.

"Our revolution is continuing. We reject the domination of any party over this state. We say no to the Brotherhood state," Hamdeen Sabahy, a popular leftist leader, told Reuters.

There were similar scenes in Suez and Alexandria, where protesters and riot police skirmished near local government offices. Tear gas fouled the air and black smoke billowed from tyres set ablaze by youths.

Some protesters pledged to march to Mursi's Cairo palace.

The anniversary brought thousands of Mursi's opponents into the streets of other cities, including Port Said at the northern mouth of the Suez Canal and al-Mahalla al-Kubra in the Nile Delta.

The Brotherhood decided against mobilizing for the anniversary, wary of the scope for more conflict after violence in December that was stoked by Mursi's decision to fast-track an Islamist-tinged constitution rejected by his opponents.

"The Brotherhood is very concerned about escalation, that's why they have tried to dial down their role on January 25," said Shadi Hamid, director of research at the Brookings Doha Center.

"It's definitely tense on the ground, but so far there hasn't been anything out of the ordinary or anything that really threatens to fundamentally alter the political situation."

In Tahrir Square, protesters echoed the chants of 2011's historic 18-day uprising. "The people want to bring down the regime," they chanted. "Leave! Leave! Leave!" chanted others as they marched towards the square.

"We are not here to celebrate but to force those in power to submit to the will of the people. Egypt now must never be like Egypt during Mubarak's rule," said Mohamed Fahmy, an activist.

BADIE CALLS FOR "PRACTICAL, SERIOUS COMPETITION"

With its eye firmly on forthcoming parliamentary elections, the Brotherhood marked the anniversary with a charity drive across the nation. It plans to deliver medical aid to one million people and distribute affordable basic foodstuffs.

Writing in Al-Ahram, Egypt's flagship state-run daily, Brotherhood leader Mohamed Badie said the country was in need of "practical, serious competition" to reform the corrupt state left by the Mubarak era.

"The differences of opinion and vision that Egypt is passing through is a characteristic at the core of transitions from dictatorship to democracy, and clearly expresses the variety of Egyptian culture," he wrote.

Still, Mursi faces discontent on multiple fronts.

His opponents say he and his group are seeking to dominate the post-Mubarak order. They accuse him of showing some of the autocratic impulses of the deposed leader by, for example, driving through the new constitution last month.

"I am taking part in today's marches to reject the warped constitution, the 'Brotherhoodisation' of the state, the attack on the rule of law, and the disregard of the president and his government for the demands for social justice," Amr Hamzawy, a prominent liberal politician, wrote on his Twitter feed.

The Brotherhood dismisses many of the criticisms as unfair fabrications of their rivals, accusing them of failing to respect the rules of the new democracy that put the Islamists in the driving seat by winning free elections.

Six months into office, Mursi is also being held responsible for an economic crisis caused by two years of turmoil. The Egyptian pound has sunk to record lows against the dollar.

SOURCES OF FRICTION ABOUND

Other sources of friction abound. Little has been done to reform brutal Mubarak-era security agencies. A spate of transport disasters on roads and railways neglected for years is feeding discontent as well. Activists are impatient for justice for the victims of violence over the last two years.

These include hardcore soccer fans, or ultras, who have been rallying in recent days to press for justice for 74 people killed in a soccer stadium disaster a year ago in Port Said after a match between local side al-Masry and Cairo's Al Ahly.

The parties that called for Friday's protests listed demands including a complete overhaul of the constitution.

Critics say the constitution, which was approved in a referendum, offers inadequate protection for human rights, grants the president too many privileges and fails to curb the power of a military establishment supreme in the Mubarak era.

Mursi's supporters say that enacting the constitution quickly was crucial to restoring stability desperately needed for economic recovery, and that the opposition is making the situation worse by perpetuating unrest.

(Additional reporting by Ashraf Fahim, Tom Perry, Marwa Awad and Shaimaa Fayed in Cairo and Yousri Mohamed in Ismailia; Writing by Tom Perry; Editing by Angus MacSwan)

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US scholar urges dramatic rethink on Taiwan

WASHINGTON: With Beijing growing in strength, a US scholar is calling for a major rethink on Taiwan in which the island would cut its troop numbers in half and rebrand its army as a self-defence force.

The proposal marks a rare break from the conventional view of American and Taiwanese policymakers that the island needs to close the military gap with Beijing, but its author said an opposite course could strengthen Taipei.

Scott Bates, president of the Washington-based Center for National Policy, said the balance was "irretrievably shifting" in China's favor and it was politically and economically unrealistic that Taiwan would commit enough to close the gap.

Instead, Taipei can take the lead by halving the size of its army, rebranding it as a Self-Defence Force in the style of Japan and renouncing any military action on mainland China's soil, he argued.

"If Taiwan were to take a bold step like this, that would change perceptions on the mainland and perhaps win some popular support for the Taiwanese position," said Bates, a former congressional aide.

"If there were a showdown, it might make (Beijing) think twice."

Taiwan should turn the new force into a disaster response team ready to deploy throughout Asia and also highlight the island's democracy through a major initiative that supports civil society across the continent, Bates said.

And instead of waging a battle to preserve a dwindling number of nations' recognition of Taipei instead of Beijing, Taiwan can use its diplomatic resources to seek solutions on Asia's bitter territorial disputes, he said.

The new Taiwanese approach would give the island the moral high ground, winning over global opinion and ensuring that China would appear to be the aggressor if it attacked, he argued.

"Mainland Chinese public opinion is beginning to matter more. The Chinese Communist Party cannot ignore its own people without repercussions," Bates said.

China considers Taiwan to be a territory awaiting reunification, by force if necessary. China's defeated nationalists fled to Taiwan after defeat by the communists in 1949, with the island developing into a self-ruling democracy.

The United States switched recognition from Taipei to Beijing in 1979 but at the same time Congress passed the Taiwan Relations Act, which requires Washington to provide the island with means to defend itself.

Bates said that his proposal would complement efforts by Taiwan President Ma Ying-jeou, who has sought to ease tensions with China by expanding economic ties, though domestic critics accuse Ma of jeopardising the island's de facto independence.

Bates supported the continuation of the Taiwan Relations Act, saying the island needed a credible deterrent. While cutting its army, Bates called for Taiwan to launch a major upgrade of its air defences and navy to show that any effort to gain supremacy over the island would be costly.

The Taiwan Relations Act enjoys virtually unanimous support in the US Congress, where lawmakers have pressed President Barack Obama to sell to the island new F-16 jets - a step that China strongly opposes.

Bates' ideas, however, are unlikely to win quick support.

Joseph Bosco, a former Pentagon official, sharply criticised the proposal, saying it went against accepted concepts of deterrence and that Taiwan already had the moral high ground.

"Taiwan does not need to disarm unilaterally in order to prove its moral or political legitimacy," Bosco said on Wednesday at an event where Bates presented his proposal.

Bates, who spoke last year at Taiwan's National Defence University and wrote an opinion piece in the Taipei Times, said he wanted to start a debate.

"It doesn't have to be my plan, but there does have to be a strategic rethink," he said.

- AFP

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Ito: Think twice about immortality and the singularity

MIT Media Lab director Joichi Ito speaking at the World Economic Forum in Davos, Switzerland

(Credit:
screenshot by Stephen Shankland/CNET)

Ray Kurzweil's vision of the "singularity" -- when nanobots make humans immortal and computer progress is so fast that the future becomes profoundly unknowable -- is a bad idea.

That's the perhaps surprisingly contrary opinion of Joichi Ito, who as a high-tech investor and director of the MIT Media Lab might be expected to be a natural ally. The lab, after all, aims to be at the center of today's technology revolution.

Ito, speaking today at the World Economic Forum in Davos, Switzerland, said he believes the singularity vision puts the wrong priorities first.

"I'm on the other side of the singularity guys. I don't think immortality is a good thing," Ito said. People who think about maximizing efficiency "don't think about the ecological, social-network effects. In the future, every science invention we do should be at least neutral," and preferably positive.

"When you introduce immortality, you have to think about what does it do to the system. At the Media Lab, our design principle is not to make the world more efficient, but making the system more resilient, more robust."

Ito called for a radically restructured educational system, too.

"You're training kids to become obedient members of a mass-production society," he said. "But as there's more and more automation, you want people to be more and more creative," like kindergarten when children spend more time playing around, exploring, and teaching each other.

Tests today judge kids in a computer-free testing environment completely unrelated to what's in the real world.

Today, "you can look on the Internet, you can ask your friends," Ito said. "Cheating is actually a feature. Success as an adult is how resourceful you are at getting people to help you do things. Those are all unassessed things" in today's schools and tests.

The MIT Media Lab favors a more unstructured approach. "Our students and faculty can explore whatever they want. We just let them go," he said. "If you're not asking permission and writing proposals, the cost of innovation is very low."

Students can talk about ideas in the morning. "By the afternoon they've built a prototype," he said, especially with the increasing utility of 3D printers.

Ito had grand visions for how those printers will change manufacturing. "We're going to be manufacturing things everywhere instead of centrally. Every single person is going to become a designer," he predicted.

Technology should help people rethink what's possible with cities, he also said. With people able to page buses on demand, bus stops should be created on demand, not fixed in advance. Rentable commuter bicycles should be cheaper to use if people drop them off in high-demand areas.

"We're trying to look at the city from a software perspective and build the hardware around it," Ito said.

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Older smokers priced out of Obamacare?

Washington Millions of smokers could be priced out of health insurance because of tobacco penalties in President Obama's health care law, according to experts who are just now teasing out the potential impact of a little-noted provision in the massive legislation.

The Affordable Care Act — "Obamacare" to its detractors — allows health insurers to charge smokers buying individual policies up to 50 percent higher premiums starting next Jan. 1.

For a 55-year-old smoker, the penalty could reach nearly $4,250 a year. A 60-year-old could wind up paying nearly $5,100 on top of premiums.

Younger smokers could be charged lower penalties under rules proposed last fall by the Obama administration. But older smokers could face a heavy hit on their household budgets at a time in life when smoking-related illnesses tend to emerge.

Workers covered on the job would be able to avoid tobacco penalties by joining smoking cessation programs, because employer plans operate under different rules. But experts say that option is not guaranteed to smokers trying to purchase coverage individually.

Nearly one of every five U.S. adults smokes. That share is higher among lower-income people, who also are more likely to work in jobs that don't come with health insurance and would therefore depend on the new federal health care law. Smoking increases the risk of developing heart disease, lung problems and cancer, contributing to nearly 450,000 deaths a year.

Insurers won't be allowed to charge more under the overhaul for people who are overweight, or have a health condition like a bad back or a heart that skips beats — but they can charge more if a person smokes.

Starting next Jan. 1, the federal health care law will make it possible for people who can't get coverage now to buy private policies, providing tax credits to keep the premiums affordable. Although the law prohibits insurance companies from turning away the sick, the penalties for smokers could have the same effect in many cases, keeping out potentially costly patients.

"We don't want to create barriers for people to get health care coverage," said California state Assemblyman Richard Pan, who is working on a law in his state that would limit insurers' ability to charge smokers more. The federal law allows states to limit or change the smoking penalty.

"We want people who are smoking to get smoking cessation treatment," added Pan, a pediatrician who represents the Sacramento area.

Obama administration officials declined to be interviewed for this article, but a former consumer protection regulator for the government is raising questions.

"If you are an insurer and there is a group of smokers you don't want in your pool, the ones you really don't want are the ones who have been smoking for 20 or 30 years," said Karen Pollitz, an expert on individual health insurance markets with the nonpartisan Kaiser Family Foundation. "You would have the flexibility to discourage them."

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Exterminator Charged in Pa. Doctor's Murder

An exterminator named Joseph Smith was arrested and charged today in the strangling and burning death of Philadelphia pediatrician Melissa Ketunuti.

Smith, 36, had been sent to Ketunuti's home on a service call where the two got into "some kind of argument" in Ketunuti's basement on Monday, Capt. James Clark of the Philadelphia police department said this morning.

"At her home they got into an argument. It went terribly wrong. He struck her, and knocked her to the ground," Clark said. "Immediately he jumped on top of her, started strangling her. She passed out, and then he set her body on fire."

Clark said Smith burned the woman's body "to hide evidence like DNA." He said "at some point, he bound her up." The doctor was found with her hands and feet tied behind her back.

The captain said that before today's arrest Smith's record consisted of only "minor traffic offenses."

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Police received a call from Ketunuti's dog-walker about the house fire around 12:30 p.m. Monday, and once inside found Ketunuti with her hands and feet bound. They believe Smith hit her and strangled her with a rope, causing her to pass out, and then bound her body and set fire to it in order to destroy evidence, including DNA evidence.

Ketunuti, 35, was fully clothed and police do not believe she was sexually assaulted.

She was a doctor at Children's Hospital of Philadelphia and had lived alone in the Graduate Hospital neighborhood of the city for about three years.

Clark said that homicide detectives scoured the neighborhood for surveillance videos from nearby stores and businesses, and through the video identified the suspect.

Smith was spotted on video getting out of the vehicle and following Ketunuti to her home. The man left her home after an hour and was seen on video circling her home.

Detectives drove to Clark's home in Levittown, Pa., outside of Philadelphia where he lives with a girlfriend and her child, on Wednesday night and brought him back to the Philadelphia police station.

A silver Ford truck was towed from Smith's home, which was the same truck spotted on surveillance video Monday in Ketunuti's neighborhood, sources told ABC News affiliate WPVI.

There, he gave statements that led police to charge him with the murders, Clark said.

Smith will face charges of murder, arson, and abuse of a corpse.

Ketunuti's hospital issued a statement Tuesday that she was "a warm, caring, earnest, bright young woman with her whole future ahead of her," adding that she will be deeply missed.

"[She was] super pleasant, really nice," one neighbor said. "Just super friendly."

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North Korea to target U.S. with nuclear, rocket tests

SEOUL (Reuters) - North Korea said on Thursday it would carry out further rocket launches and a nuclear test that would target the United States, dramatically stepping up its threats against a country it called its "sworn enemy".

The announcement by the country's top military body came a day after the U.N. Security Council agreed to a U.S.-backed resolution to censure and sanction North Korea for a rocket launch in December that breached U.N. rules.

North Korea is not believed to have the technology to deliver a nuclear warhead capable of hitting the continental United States, although its December launch showed it had the capacity to deliver a rocket that could travel 10,000 km (6,200 miles), potentially putting San Francisco in range, according to an intelligence assessment by South Korea.

"We are not disguising the fact that the various satellites and long-range rockets that we will fire and the high-level nuclear test we will carry out are targeted at the United States," North Korea's National Defence Commission said, according to state news agency KCNA.

North Korea is believed by South Korea and other observers to be "technically ready" for a third nuclear test, and the decision to go ahead rests with leader Kim Jong-un, who pressed ahead with the December rocket launch in defiance of the U.N. sanctions.

China, the one major diplomatic ally of the isolated and impoverished North, agreed to the U.S.-backed resolution and it also supported resolutions in 2006 and 2009 after Pyongyang's two earlier nuclear tests.

Thursday's statement by North Korea represents a huge challenge to Beijing as it undergoes a leadership transition, with Xi Jinping due to take office in March.

China's Foreign Ministry called for calm and restraint and a return to six-party talks, but effectively singled out North Korea, urging the "relevant party" not to take any steps that would raise tensions.

"We hope the relevant party can remain calm and act and speak in a cautious and prudent way and not take any steps which may further worsen the situation," ministry spokesman Hong Lei told reporters at a regular press briefing.

North Korea has rejected proposals to restart the talks aimed at reining in its nuclear capacity. The United States, China, Russia, Japan and the two Koreas are the six parties involved.

"After all these years and numerous rounds of six-party talks we can see that China's influence over North Korea is actually very limited. All China can do is try to persuade them not to carry out their threats," said Cai Jian, an expert on Korea at Fudan University in Shanghai.

Analysts said the North could test as early as February as South Korea prepares to install a new, untested president or that it could choose to stage a nuclear explosion to coincide with former ruler Kim Jong-il's Feb 16 birthday.

"North Korea will have felt betrayed by China for agreeing to the latest U.N. resolution and they might be targeting (China) as well (with this statement)," said Lee Seung-yeol, senior research fellow at Ewha Institute of Unification Studies in Seoul.

U.S. URGES NO TEST

Washington urged North Korea not to proceed with a third test just as the North's statement was published on Thursday.

"Whether North Korea tests or not is up to North Korea," Glyn Davies, the top U.S. envoy for North Korean diplomacy, said in the South Korean capital of Seoul.

"We hope they don't do it. We call on them not to do it," Davies said after a meeting with South Korean officials. "This is not a moment to increase tensions on the Korean peninsula."

The North was banned from developing missile and nuclear technology under sanctions dating from its 2006 and 2009 nuclear tests.

A South Korean military official said the concern now is that Pyongyang could undertake a third nuclear test using highly enriched uranium for the first time, opening a second path to a bomb.

North Korea's 2006 nuclear test using plutonium produced a puny yield equivalent to one kiloton of TNT - compared with 13-18 kilotons for the Hiroshima bomb - and U.S. intelligence estimates put the 2009 test's yield at roughly two kilotons

North Korea is estimated to have enough fissile material for about a dozen plutonium warheads, although estimates vary, and intelligence reports suggest that it has been enriching uranium to supplement that stock and give it a second path to the bomb.

According to estimates from the Institute for Science and International Security from late 2012, North Korea could have enough weapons grade uranium for 21-32 nuclear weapons by 2016 if it used one centrifuge at its Yongbyon nuclear plant to enrich uranium to weapons grade.

North Korea has not yet mastered the technology needed to make a nuclear warhead small enough for an intercontinental missile, most observers say, and needs to develop the capacity to shield any warhead from re-entry into the earth's atmosphere.

North Korea gave no time-frame for the coming test and often employs harsh rhetoric in response to U.N. and U.S. actions that it sees as hostile.

The bellicose statement on Thursday appeared to dent any remaining hopes that Kim Jong-un, believed to be 30 years old, would pursue a different path from his father, Kim Jong-il, who oversaw the country's military and nuclear programs.

The older Kim died in December 2011.

"The UNSC (Security Council) resolution masterminded by the U.S. has brought its hostile policy towards the Democratic Peoples Republic of Korea (North Korea) to its most dangerous stage," the commission was quoted as saying.

(Additional reporting by Christine Kim in SEOUL, Ben Blanchard and Sui-Lee Wee in Beijing; Writing by David Chance; Editing by Raju Gopalakrishnan and Ron Popeski)

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Keppel Corp's net profit falls 22% on-year in Q4

SINGAPORE: Falling margins from building oil rigs has hit the bottomline of Keppel Corp.

Net profit for the world's leading rig builder fell 22 per cent on-year to S$305 million in the fourth quarter last year.

Still, full year profit for the conglomerate came in 15 per cent to S$2.24 billion.

Despite lower net profit in the three months ended Dec 31, Keppel Corp still declared a final dividend of 27 cents per share.

As part of its 45th anniversary, Keppel Corp is handing out more goodies to its shareholders.

The company has proposed to distribute one Keppel REIT unit for every five Keppel Corp shares.

That is about 27.4 cents per share based on Keppel REIT's closing price of S$1.37 on Thursday.

Together with the interim dividend of 18 cents, total distribution for 2012 will be 72.4 cents per share.

Keppel Corp said the lower net profit was partly due to lower contributions from its offshore and marine unit.

Offshore and Marine's contribution was 12 per cent lower from a higher base in 2011 when margins were at record highs. It contributes to half of Keppel Corp's net profits.

"Keen rivalry from Chinese and Korean yards have suppressed prices and squeezed margins on newbuilds," said Choo Chiau Beng, chief executive officer at Keppel Corp. "In 2013, we will be completing a record of 22 newbuild units."

Analysts remained upbeat of Keppel's prospects going forward.

They say their financial results still outperformed market expectations.

Keppel Corp expects crude oil prices to stay above US$100 per barrel, supporting the need for more global exploration and production.

But global challenges like the slower US economy and the eurozone crisis from last year will continue to pose uncertainties for Keppel Corp's business.

Keppel Corp's property arm, led by the listed Keppel Land, boosted the group's earnings.

Net profit for the property division was 2.5 times higher than in 2011, offsetting the lower earnings from business in the offshore and marine, and infrastructure.

But Keppel Corp does not expect its property arm to perform better this year.

This is because recognition from sales of completed units at its development Reflections at Keppel Bay is expected to be lower this financial year.

- CNA/xq

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Twitter unveils Vine, its six-second Instagram for video

Twitter today unveiled Vine, an app for iOS that lets anyone create and share short looping videos.

Twitter acquired Vine last fall, but anyone can use Vine regardless of whether they use Twitter. However, the service is clearly meant to be embedded anywhere, and there are plenty of examples of the videos being embedded in tweets. The service (see an example below) is being referred to by many as Twitter's "Instagram for video."

Vine videos are limited to a maximum of six seconds, and play in a continuous loop. They are shot using the Vine app. In a blog post, Vine co-founder and general manager Dom Hofmann wrote that, "Posts on Vine are about abbreviation -- the shortened form of something larger. They're little windows into the people, settings, ideas and objects that make up your life. They're quirky, and we think that's part of what makes them so special."

It's not clear, however, if Vine posts have a technical limitation that keeps that six seconds or shorter. Neither Twitter nor Vine immediately responded to a request for comment.

Although Twitter officially unveiled the service today, CEO Dick Costolo teased it yesterday when he posted a tweet with an embedded video. What was not clear yesterday, however, was whether Vine was going to become Twitter's own hosted video service, or if, as turned out to be the case, it would be a stand-alone service that works in conjunction with Twitter, but doesn't depend on it.

There are of course other embeddable short video services. One is Tout, a service that lets people shoot videos of up to 15 seconds, and then either embed them in tweets, Facebook posts, blogs, or elsewhere, or view them directly on the Web. But Twitter seems to have decided that Vine was a service worth buying, despite the fact that it will allow it to exist independently.

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Polar air mass keeps icy grip on Northeast

PORTLAND, Maine Polar air settled in earnest over the Northeast after trekking through the Midwest, grinding trains to a halt, bursting pipes and bringing further misery to folks still trying to recover from superstorm Sandy.

The coldest temperatures were expected to continue Thursday, after which conditions should slowly moderate before returning to normal, said John Koch, a meteorologist with the National Weather Service regional headquarters in Bohemia, N.Y. For the most part, temperatures have been around 10 to 15 degrees below normal, with windy conditions making it feel colder, he said.

The Canadian air mass that arrived in the Upper Midwest over the weekend prompted the National Weather Service to issue wind chill warnings across upstate New York and northern New England.

In a storm-damaged neighborhood near the beach on New York City's Staten Island, people who haven't had heat in their homes since the late October storm took refuge in tents set up by aid workers. The tents were equipped with propane heaters, which were barely keeping up with the cold, and workers were providing sleeping bags and blankets for warmth.

The temperature was expected to dip to around 11 degrees before dawn Thursday.

Play Video

Sandy victims left in the cold

Anthony Gambino has been sleeping in one of the tents off and on since Sandy severely damaged his home, CBS News correspondent Elaine Quijano reports. The former mechanic lives on disability.

"Next week they're talking about getting warmer, but let's face it, we're going into February," said Gambino. "February is unpredictable. March is unpredictable. We may get worse. We may get better. Who knows? Right now, we gotta deal with the moment, and the moment is bad."

The University of South Dakota in Vermillion offered a third consecutive night of free hotel rooms to 500 students who had to leave when a water pipe froze over an electrical room and damaged components. The cold also caused circuit problems on the Metro-North railroad serving areas north of New York City, creating rush-hour delays that were resolved by late Wednesday morning.

In northern New Hampshire, a man who crashed his snowmobile while going over a hill on Tuesday and spent a "bitterly cold night" injured and alone on a trail died on Wednesday, the state's Fish and Game Department said. Friends who went looking for John Arsenault, of Shelburne, when he didn't show up for work found him unconscious Wednesday morning, and he died later at a hospital, authorities said.

In Pennsylvania, officials at a park on Lake Erie warned visitors to stay off hollow "ice dunes" forming along the shore because of the danger of frigid water underneath. A ski resort in New Hampshire shut down Wednesday because of unsafe ski conditions: a predicted wind chill of 48 degrees below zero.

In northern Maine, the temperature dipped to as low as 36 below zero Wednesday morning. The weather service was calling for wind chills as low as minus 45.

Keith Pelletier, the owner of Dolly's Restaurant in Frenchville, said his customers were dressed in multiple layers of clothing and keeping their cars running in the parking lot while eating lunch. It was so cold that even the snowmobilers were staying home, he said.

"You take the wind chill at 39 below and take a snowmobile going 50 mph, and you're about double that," he said. "That's pretty cold."

For Anthony Cavallo, the cold was just another in a litany of big and small aggravations that began when superstorm Sandy swept through his Union Beach, N.J., neighborhood and flooded his one-story house with 4 1/2 feet of water.

Still waiting for the go-ahead to rebuild, Cavallo and his family have been living in a trailer they purchased once it became clear they couldn't afford to rent.

Wednesday's frigid temperatures temporarily froze the trailer's pipes, which Cavallo's 14-year-old daughter discovered when she tried to take a shower at 4:30 a.m. Cavallo spent the morning thawing out the pipes and stuffing hay under the trailer to help insulate them.

"Every day it's something, whether it's frozen pipes or getting jerked around for two months by insurance companies," the 48-year-old security system installer said. "I just kind of want to wake up one day and have no surprises."

In New York City, food vendor Bashir Babury contended with bone-numbing cold when he set up his cart selling coffee, bagels and pastries at 3 a.m. Wednesday. On the coldest of days, he wears layers of clothing and cranks up a small propane heater inside his cart.

"I put on two, three socks, I have good boots and two, three jackets," he said. "A hat, gloves, but when I'm working I can't wear gloves."

A little cold air couldn't keep Jo Goodwin, of Bridgewater, N.H., off the slopes at Sugarloaf ski resort in Carrabassett Valley, Maine, where she was skiing Wednesday with her husband and her sister. The snow conditions were great, and there were no lift lines.

To keep warm, she uses a toe warmer, a hand warmer, a face mask, extra underwear and an extra wool sweater. She was told the wind chill was minus 30 midway up the mountain and 50 below zero near the top.

"Sometimes," she said, "it's better not to know."

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