Astrophile: A scorched world with snow black and smoky

Astrophile is our weekly column on curious cosmic objects, from the solar system to the far reaches of the multiverse

Object: Titanium oxide snow
Location: The hot-Jupiter planet HD 209458b

There is something magical about waking up to discover it has snowed during the night. But there's no powdery white blanket when it snows on exoplanet HD 209458b. Snow there is black, smoky and hot as hell – resembling a forest fire more than a winter wonderland. Put it this way: you won't be needing mittens.

HD 209458b belongs to a family called hot Jupiters, gas-giant planets that are constantly being roasted due to their closeness to their sun. By contrast, the gas giants in our immediate neighbourhood, including Jupiter, are frigid, lying at the solar system's far reaches.

HD 209458b is also noteworthy because it is tidally locked, so one side is permanently facing towards its star while the other is in perpetual night. On the face of it, these conditions wouldn't seem to invite snow: temperatures on the day side come close to 2000° C, while the night side is comparatively chilly at around 500° C.

Snow made of water is, of course, impossible on this scorched world, but the drastic temperature differential sets up atmospheric currents that swirl material from the day side to night and vice versa. That means that any substances with the right combination of properties might be gaseous on the day side and then condense into a solid on the night side, and fall as precipitation. Say hello to titanium oxide snow.

Stuck on the surface

Although oxides of titanium make up only a small component of a hot Jupiter's atmosphere, these compounds have the right properties to fall as snow. But there was a snag that could have put a stop to any blizzards. Older computer models of hot Jupiters suggested that titanium oxides condensing in the air on the night side would snow – and remain on the relatively cool surface forever. "Imagine on Earth if you had no mechanism to evaporate water, it would never rain," says Vivien Parmentier of the Côte d'Azur Observatory in Nice, France.

Now he and colleagues have created a more detailed 3D computer model that shows that the snow can become a gas again as it falls and the temperature and pressure increase. Strong updraughts can then blow the titanium oxides back to the upper atmosphere. "The gas can come back on the top layers and snow again and again," says Parmentier.

Snowfall on HD 209458b would be like none you've ever seen. Though titanium dioxide is white and shiny, for example, the snowflakes would also contain silica oxides from the atmosphere, making them black. Since the atmosphere is also dark, snowstorms on the planet would be a smoky affair, the opposite of the white-outs we get on Earth. "It would be like being in the middle of a forest fire," says Parmentier.

Although the team studied a particular hot Jupiter, their model should apply equally to other planets of this type, suggesting hot snow is a common occurrence. Parmentier says we may have already spotted snow clouds on another hot Jupiter, HD 189733b, as spectral analysis of the planet suggests the presence of microscopic particles in its atmosphere.

David Sing of the University of Exeter, UK, who helped identify such particles on HD 189733b, says the team's new model goes a long way to explaining how titanium oxides behave on hot Jupiters. "We're pretty used to water condensing on Earth; there it is titanium because the temperatures are so much hotter."

Hot, black snow – now that would be something to wake up to.

Reference: http://arxiv.org/abs/1301.4522

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India set to introduce death penalty in some rape cases

NEW DELHI - India's Cabinet has approved harsher punishments for rapists, including the death penalty, after a brutal gang-rape in New Delhi that sparked national outrage.

A government-appointed panel recommended the changes to ministers after the death of a 23-year-old woman who was savagely raped and attacked in a bus on December 16 and died nearly two weeks later.

The case ignited nationwide demonstrations by protesters demanding better safety for women.

The changes, which must be approved by President Pranab Mukherjee to become law, include doubling the minimum sentence for gang-rape and imposing the death penalty when the victim is killed or left in a vegetative state.

"We have taken swift action and hope these steps will make women feel safer in the country," Law Minister Ashwani Kumar told reporters late on Friday.

"This is a progressive piece of legislation and is consistent with the felt sensitivities of the nation in the aftermath of the outrageous gang-rape," he added.

On Saturday, the gang-rape victim's brother praised the Cabinet's decision to make sentences tougher for attackers, calling it a "positive initiative", according to the Press Trust of India news agency.

The changes to the rape laws were expected to be approved by Mukherjee as early as this weekend but must be ratified by parliament or they will lapse.

Under the changes, the minimum sentence for gang-rape, rape of a minor, rape by policemen or a person in authority will be doubled to 20 years from 10 and can be extended to life without parole.

Under the current law, a rapist faces a term of seven to 10 years.

The Cabinet has also created a new set of offences such as voyeurism and stalking that will be included in the new law.

Five men are being tried in a special fast-track court in New Delhi on charges of murder, kidnapping and rape in connection with the death of the student, who died from her injuries.

A sixth suspect faces trial in a juvenile court.

The physiotherapy student was assaulted on a bus she had boarded with a male companion as they returned home from watching a film in an upmarket shopping mall.

India says it only imposes the death penalty in the "rarest of rare cases". Three months ago, it hanged the lone surviving gunman from the 2008 Mumbai terror attacks -- the country's first execution in eight years.

Verdicts for the five men would be handed down "very soon", a defence lawyer said earlier in the week, as an application to relocate the trial outside of the capital failed.

A separate court has ruled that a sixth suspect in the case should be tried as a juvenile after it accepted his claim based on his school certificate that he was aged 17.

The decision, which means he faces a maximum of three years if convicted instead of the death penalty, has appalled the victim's family who said they would call for an exception to be made in the case.

Indian media reports, citing unnamed police officials, say the 17-year-old was among the most brutal of the assailants, who are accused of attacking the woman with an iron bar, causing horrifying internal injuries.

- AFP/ir

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Clinton's final day in job marred by bombing

STORY HIGHLIGHTS

• NEW: Kerry sworn in, first trip likely to include stops in Egypt and Israel


• Clinton cites Turkey attack as example of challenges in the world


• Clinton visited 112 countries and flew almost 1 million miles in four years


• At 65, Clinton faces questions about whether she'll run for president in 2016

Washington (CNN) -- A final meeting with the president. A farewell address to the State Department staff. A terrorist attack at the U.S. Embassy in Turkey.

Hillary Clinton's last day as secretary of state on Friday seemed to be a microcosm of her four globe-trotting years as America's top diplomat.

The former first lady had a full schedule, as usual, meeting in private with President Barack Obama at the White House and then attending the send-off ceremony with clapping, cheering workers at the agency she led.

Those events were clouded by a suicide bombing earlier in the day in Ankara that killed the attacker and a Turkish security guard at the embassy. No Americans were killed or injured.

Hillary Clinton through the years

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Clinton traveled nearly 1 million miles and visited 112 countries in her quest as secretary to promote better understanding of the United States and its role in the world.

On the road with Hillary Clinton

However, her tenure will also be remembered for last September's attack on a diplomatic compound in Benghazi, Libya, that killed Ambassador Christopher Stevens and three other Americans.

Amid the good wishes and emotions of Clinton's farewell, Friday's bombing in Turkey was a grim reminder of the continuing threats and challenges to U.S. diplomatic efforts.

"Of course we live in very complex and dangerous times as we saw again just today at our embassy in Ankara," Clinton told the State Department ceremony.

"I know the world we are trying to help bring into being in the 21st century will have many difficult days," she added. "But I am more optimistic today than I was when I stood here four years ago."

Standing in front of a sign that said "Thank You," Clinton told the staffers jamming the area that she would miss them and the important work they do around the world.

"I will probably be dialing ops just to talk," she said to laughter.

Clinton sent her resignation letter to Obama a few hours before her successor, John Kerry, was sworn in on Friday afternoon.

Opinion: Clinton, secretary of empowerment

"It has been an honor to serve in your administration and to represent our country around the world," the letter said.

"I am proud of what we have accomplished together on behalf of the American people and in pursuit of our interests and values. And I am more convinced than ever in the strength and staying power of America's global leadership and our capacity to be a force for good around the world," she said.

In what was billed as Clinton's farewell speech on Thursday at the Council on Foreign Relations, she said the United States needs to build "smart power" in a world where the levers of influence are changing rapidly.

American diplomats have to work with entrepreneurs and activists, use new technological tools such as social media and update the global and regional institutions that have dominated international affairs since World War II, Clinton said.

"We need a new architecture for a new world -- more Frank Gehry than formal Greek," she said. "Now some of his work at first might appear haphazard, but in fact, it's highly intentional and sophisticated. Where once a few strong columns could hold up the weight of the world, today we need a dynamic mix of materials and structures."

Clinton defends her diplomatic legacy

Clinton called the United States "uniquely well-positioned" to help construct that metaphorical global edifice.

"Those things that make us who we are as a nation --- our openness and innovation, our diversity, our devotion to human rights and democracy --- are beautifully matched to the demands of this era and this interdependent world," she said.

Kerry, who served nearly 30 years in the Senate, stepped down Friday ahead of his swearing-in as the nation's 68th secretary of state.

He was chairman of the Senate Foreign Relations Committee and the Democratic nominee for president in 2004, when he lost to incumbent President George W. Bush.

Kerry expects to take his first official overseas trip in coming weeks, according to a U.S. official who said stops would likely include Israel and Egypt.

Exiting State, Clinton looks to writing, speaking

Clinton, 65, now faces persistent questions about whether she will mount a second White House run in 2016 to break perhaps the highest remaining glass ceiling.

"Well I'm not thinking about anything like that right now. I'm looking forward to finishing my tenure as secretary of state and catching up on 20 years of sleep deprivation," Clinton said Tuesday at a global "town hall" forum in Washington.

Observers note her answer was a less emphatic denial than previous responses that seemed to rule out any possibility of reentering the political fray.

According to a CNN/ORC International poll conducted last month, 85% of Democrats and independents who lean toward the Democratic Party said they would be very or somewhat likely to support Clinton if she sought the Democratic nomination.

Clinton was considered a favorite in 2008, but Obama, who served with her in the Senate, got an early jump in the primaries. Clinton was unable to capture the momentum in a fierce political battle.

Despite the rugged campaign, Obama chose Clinton for his Cabinet and she embraced the role.

In a joint interview with CBS that aired on Sunday, Obama said that he believes Clinton's legacy will rank among the best.

"It has been a great collaboration over the last four years," Obama said. "I'm going to miss her."

Clinton touts 'smart power' in farewell talk

CNN's Elise Labott, Jill Dougherty and Matt Smith contributed to this report.

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Twitter: 250,000 users' data compromised in hacking attacks

#1157946: Twitter bird logo, social networking and microblogging service, graphic element on white / AP Graphics

Twitter said today that it recently detected a series of attempts to hack into user data, and that the attackers may have successfully absconded with some users' information.

In a blog post Friday afternoon, Twitter explained the situation, and the steps it has taken to fight off the hackers.

This week, we detected unusual access patterns that led to us identifying unauthorized access attempts to Twitter user data. We discovered one live attack and were able to shut it down in process moments later. However, our investigation has thus far indicated that the attackers may have had access to limited user information - usernames, email addresses, session tokens and encrypted/salted versions of passwords - for approximately 250,000 users. As a precautionary security measure, we have reset passwords and revoked session tokens for these accounts. If your account was one of them, you will have recently received (or will shortly) an email from us at the address associated with your Twitter account notifying you that you will need to create a new password. Your old password will not work when you try to log in to Twitter.

Twitter said in the post that a very small number of users were affected by the hacking, but it encouraged everyone who uses the service to ensure that they are practicing "good password hygiene, on Twitter and elsewhere on the Internet." Among its suggestions: using unique passwords of at least ten characters, including a mix of upper and lower case letters, numbers, and symbols. Based on attacks on other high-profile tech and media companies, Twitter also said it is recommending the U.S. Department of Homeland Security's recent advisory on disabling Java, among other precautions.

This attack was not the work of amateurs, and we do not believe it was an isolated incident. The attackers were extremely sophisticated, and we believe other companies and organizations have also been recently similarly attacked. For that reason we felt that it was important to publicize this attack while we still gather information, and we are helping government and federal law enforcement in their effort to find and prosecute these attackers to make the Internet safer for all users.

This article originally appeared on CNET under the headline "Twitter says 250,000 users' data compromised in hacking attacks"

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Gov's Handling of Sandusky Case Under Investigation

The newly-elected attorney general of Pennsylvania is going after the state's governor, Tom Corbett, who was attorney general when child sex allegations against Penn State coach Jerry Sandusky were first brought forward.

Kathleen Kane, a Democrat who was sworn in as attorney general on Jan. 15, said that she will name a special prosecutor in the coming days to investigate Corbett's handling of the Sandusky case. Corbett is a Republican.

The investigation will look specifically at why it took the attorney general's office three years to bring criminal charges against Sandusky while he continued to have access to children.

"Attorney General Kane will appoint a special prosecutor to lead the office's internal investigation into how the Sandusky child abuse investigation was handled by the Office of the Attorney General," Kane's office said in a statement released today.

Corbett's attorney general's office was first notified of the allegations against Sandusky in 2008 when a high school student told his mother and school that Sandusky had molested him. The local district attorney passed the allegation on to the attorney general, then Corbett. Corbett convened a grand jury.

Mario Tama; Patrick Smith/Getty Images

Jerry Sandusky Insists Innocence Before Sentencing Watch Video

Jerry Sandusky Sentencing: Why Did He Release Statement? Watch Video

Jerry Sandusky Claims Innocence in Audio Statement Watch Video

It wasn't until 2011 that sex abuse charges were filed against Sandusky while Corbett had since become governor. Sandusky was convicted on 45 counts of sex abuse in June 2012.

The charges sent shockwaves throughout Pennsylvania, as Penn State's president, two top officials, and legendary coach Joe Paterno all lost their jobs over the scandal.

"Why did it take 33 months to get Sandusky off the streets? Was the use of a grand jury the right decision? Why were there so few resources dedicated to the investigation? Were the best practices implemented?" the statement from Kane's office read.

"At the end of this investigation, we will know the answers to these questions and be able to tell the people of Pennsylvania the facts and give them answers that they deserve," the statement said.

Describing an interview Kane gave the New York Times, the Times said Kane suggested that Corbett did not want to upset voters or donors in the Penn State community before his gubernatorial run in 2009.

Corbett has denied those suggestions. His office did not immediately return calls for comment.

Kane's office preemptively fought back against the idea that the investigation is politically motivated. Kane, a Democrat, defeated the incumbent attorney general, Linda Kelly, a Republican in November 2011. Corbett is a Republican.

"The speculation that this is about politics is insane," a staff member in Kane's office told ABC News today. "You go anywhere in Pennsylvania and anywhere across the country and you'll find individuals asking, 'why did it take three years? Why was there a grand jury? Why make these kids talk to 30 different people about what happened?"

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Mind-meld brain power is best for steering spaceships

TURNS out two heads really are better than one. Two people have successfully steered a virtual spacecraft by combining the power of their thoughts - and their efforts were far more accurate than one person acting alone. One day groups of people hooked up to brain-computer interfaces (BCIs) might work together to control complex robotic and telepresence systems, maybe even in space.

A BCI system records the brain's electrical activity using EEG signals, which are detected with electrodes attached to the scalp. Machine-learning software learns to recognise the patterns generated by each user as they think of a certain concept, such as "left" or "right". BCIs have helped people with disabilities to steer a wheelchair, for example.

Researchers are discovering, however, that they get better results in some tasks by combining the signals from multiple BCI users. Until now, this "collaborative BCI" technique has been used in simple pattern-recognition tasks, but a team at the University of Essex in the UK wanted to test it more rigorously.

So they developed a simulator in which pairs of BCI users had to steer a craft towards the dead centre of a planet by thinking about one of eight directions that they could fly in, like using compass points. Brain signals representing the users' chosen direction, as interpreted by the machine-learning system, were merged in real time and the spacecraft followed that path.

The results, to be presented at an Intelligent User Interfaces conference in California in March, strongly favoured two-brain navigation. Simulation flights were 67 per cent accurate for a single user, but 90 per cent on target for two users. And when coping with sudden changes in the simulated planet's position, reaction times were halved, too. Combining signals eradicates the random noise that dogs EEG signals. "When you average signals from two people's brains, the noise cancels out a bit," says team member Riccardo Poli.

The technique can also compensate for a lapse in attention. "It is difficult to stay focused on the task at all times. So when a single user has momentary attention lapses, it matters. But when there are two users, a lapse by one will not have much effect, so you stay on target," Poli says.

NASA's Jet Propulsion Lab in Pasadena, California, has been observing the work while itself investigating BCI's potential for controlling planetary rovers, for example. But don't hold your breath, says JPL senior research scientist Adrian Stoica. "While potential uses for space applications exist, in terms of uses for planetary rover remote control, this is still a speculative idea," he says.

This article appeared in print under the headline "Two brains, one mind"

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A*STAR scientists solve century-old mystery in yeast infections

SINGAPORE: Scientists from the Agency for Science Technology And Research (A*STAR) have solved a century-old mystery in yeast infections.

They constructed stable strains of Candida albicans, the most prevalent human fungal pathogen and a major cause of hospital acquired infection.

A*STAR said on Friday that their discovery will help pave the way to develop drugs that effectively target and treat such infections.

Currently, the choice of drugs for this pathogen is limited.

Drugs resistance has also emerged worldwide, posing a great challenge to medicine.

The A*STAR scientists have shown that Candida albicans, long thought of as always having two copies of each chromosome and no sexual reproduction in its life, can and does exist as a sexually reproducing cell carrying only one copy of its genome.

The discovery fills a long missing gap in the life cycle of the pathogen and greatly advances the understanding of how it generates genetic variations.

The tools developed will help speed up the analyses of gene function and might speed up efforts to cure Candida infections.

- CNA/fa

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At least 25 killed in Mexico office blast, dozens injured

STORY HIGHLIGHTS

• NEW: 25 people were killed and more than 100 are injured, interior minister says


• The explosion collapsed two floors of an office building, paramedics say


• Rescuers have pulled a survivor from the rubble, Mexico's president says


• Crews are searching for people trapped in the building

Lea este artículo en español/Read this article in Spanish

Mexico City (CNN) -- An explosion rocked the offices of Mexico's state oil company Thursday, killing at least 25 people and injuring 101, Mexico's interior minister said.

Dozens of people were trapped in the building after the explosion, Foro TV reported. It was unclear how many of them had been pulled to safety, or whether anyone remained stuck inside late Thursday, Interior Minister Miguel Angel Osorio Chong told reporters.

More than five hours after the blast, rescuers had pulled at least one survivor from the rubble, Mexico's president said in a Twitter post.

Crews were still searching Thursday night for people who could be trapped in the Pemex office complex, which includes one of the city's tallest skyscrapers.

Explosion hits Mexican state oil company Pemex

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The explosion occurred in a basement and collapsed two floors of a building adjacent to the well-known tower, said Carlos Javier Rodriguez Jurado, one of the first paramedics to arrive at the scene.

The explosion tore through the building "from the inside out," he said, and rescuers found many people trapped. Six hours after the explosion, Rodriguez said people were likely still stuck in the rubble.

It was unclear what caused the blast, and Mexico's attorney general's office is investigating, Pemex said in a statement.

A large plume of smoke rose near the building after the explosion around 4 p.m. Thursday, and emergency crews swarmed the scene.

"People were screaming. ... You could see pieces of the wall falling to the ground," said Joaquin Borrell Valenzuela, an attorney for the Pemex comptroller's office, who was in a courtyard outside the building at the time of the blast.

Paramedics quickly arrived and started pulling bodies from the rubble.

"Entering the building, we smelled a strong odor of gas," said Christopher Rangel, a paramedic and firefighter.

Outside the building, frantic family members searched for loved ones, and shaken witnesses described the explosion.

Mario Guzman said he was on the 10th floor of the tower when he felt "a very strong blow."

"We felt like the whole building was going to collapse," he told CNNMexico.

Images from the scene showed emergency rescue teams carrying people on stretchers. Authorities said helicopters carried some of the wounded to hospitals.

At least 14 people were hospitalized with injuries, and two of them were in serious condition, the state-run Notimex news agency reported.

Mexican President Enrique Pena Nieto surveyed the damage Thursday night, along with Osorio Chong and Mexico City's mayor.

Pena Nieto cautioned against speculating over what caused the blast, and said authorities would be closely investigating.

Thousands of people work at the Pemex headquarters, which includes a 54-story building that is nearly 700 feet tall.

The explosion occurred in an annex building just to the east of the tower, Foreign Minister Jose Antonio Meade said.

Officials evacuated the complex and operations will cease there until further notice, the company said.

The state oil company's director, who was on a business trip in South Korea this week, said in a Twitter post that he would return to Mexico immediately.

"We will get to the bottom of the causes in close coordination with the authorities," Pemex Director General Emilio Lozoya Austin said. "At this time, attending to the injured is the priority."

Federal troops and rescue dogs were aiding in search efforts late Thursday night.

As they combed through the rubble, a Pemex executive's cell phone rang, Rangel said.

A man on the other end of the line said he was still trapped, and started to describe his location to rescuers.

"Unfortunately, we lost communication with him," Rangel said.

When they called back, his phone didn't ring.

CNN en Español's Krupskaia Alis reported from Mexico City. CNN's Catherine E. Shoichet reported from Atlanta. CNN's Rafael Romo, Edwin Mesa, Christine Theodorou, Rey Rodriguez, Rene Hernandez and CNNMexico's Arturo Ascencion and Javier Rodriguez contributed to this report.

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Alaska Airlines plane lands safely after pilot passes out

Updated 3 a.m. EST

PORTLAND, Ore. An Alaska Airlines jetliner bound for Seattle made an emergency landing in Portland, Ore., Thursday night after the pilot lost consciousness, an airline spokesman said.

The co-pilot landed Flight 473 safely after declaring an emergency to get priority care for the pilot, spokesman Paul McElroy said. All of the airlines' pilots are trained to fly single-handedly.

The pilot lost consciousness "somewhere over Oregon," McElroy said, then later regained consciousness and left the cockpit. A doctor on board the flight tended to him in the cabin until the plane landed and was met by medical personnel on the runway.

The pilot, who was not identified, was taken to a hospital but there was no immediate word on his condition, McElroy said.

The Boeing 737-700, with 116 passengers and five crew members on board, left Los Angeles about 6:30 p.m. and was diverted to Portland, touching down there at about 9 p.m., reports CBS Portland affiliate KOIN-TV. It had been due to arrive in Seattle at 9:30 p.m.

McElroy says the pilot has been flying for Alaska for 28 years and was current on his six-month medical evaluation. The co-pilot is an 11-year Alaska Air veteran.

On Jan. 22, the co-pilot on an Alaska Airlines flight from Seattle to Las Vegas fainted briefly, and the pilot requested emergency landing priority to get prompt medical assistance for him.

"At this point, we do not believe there was a connection between the two incidents," McElvoy said.

Twenty passengers with a tight schedule for connecting flights were put on a Horizon Air shuttle flight to Seattle on Thursday night, the spokesman said.

A new pilot was dispatched to Portland to fly the remaining passengers to Seattle on board the same plane.

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Keep rainforests – they drive the planet's winds

WHAT creates the wind? Anyone will tell you that temperature differences are key. Hot air rises and is replaced by cooler air surging in beneath. Except that maybe the explanation found in every textbook is too simple.

What if, instead, the winds that drive atmospheric circulation are mainly created by the condensation of moisture? Much of this occurs over rainforests as water evaporates or is transpired from the trees. The physicists and foresters behind this controversial idea say that if we chop down the forests, we will lose the winds - and the rains they bring with them.

The physical process itself is not in dispute. Whenever water vapour condenses to form droplets, its volume is reduced, lowering the pressure. Air moves in, creating wind.

Climate scientists have always regarded this as a trivial effect. Criticism has been heaped on the theory since it was first aired four years ago. "This is not a mysterious effect. It is small and included in some atmospheric models," says Isaac Held of the US National Oceanic and Atmospheric Administration in Princeton, New Jersey.

But physicist Anastassia Makarieva of St Petersburg University in Russia says the pressure gradients it would create "have never received a theoretical investigation". Her calculations suggest that the condensation of billions of litres of water above giant forests produces a giant effect (Atmospheric Chemistry and Physics, doi.org/kbx).

Co-author Douglas Sheil at Southern Cross University in Lismore, Australia, says critics have yet to explain why they think Makarieva is wrong. Until they do, he said, "this looks like a powerful mechanism that governs weather patterns round the world".

Judith Curry of the Georgia Institute of Technology, an author of the standard textbook Thermodynamics of Atmospheres and Oceans, is encouraging. "The process they describe is physically correct," she said. "The main question is its relative magnitude compared with other processes." She thinks it could explain why climate models do not get monsoons and hurricanes right.

Nobody doubts that forests recycle rain through evaporation and transpiration. But this is the first suggestion that this recycling process also whips up the winds that suck moist ocean air across continents.

The implications are huge. "In standard theories, if we lose forests the rainfall in the continental interiors generally declines by 10 to 30 per cent. In our theory, it is likely to decline by 90 per cent or more," says Sheil.

But it is not all bad news. If lost forests are replanted, the theory suggests, then the winds they generate could return rain to even the most arid lands. After all, the Sahara was lush swampland 6000 years ago.

If you would like to reuse any content from New Scientist, either in print or online, please contact the syndication department first for permission. New Scientist does not own rights to photos, but there are a variety of licensing options available for use of articles and graphics we own the copyright to.

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SK Group head gets four-year jail sentence

SEOUL: The head of South Korea's third largest conglomerate, the SK Group, was sentenced to four years in prison on Thursday after being convicted of embezzling close to $50 million.

The custodial sentence was seen as relatively tough in a country where convicted business tycoons are often given suspended prison terms in recognition of their apparent contribution to the national economy.

The court ruled that Chey Tae-Won, 53, had embezzled 49.7 billion won ($45.6 million) from two affiliates and funnelled the money into a firm for investments in stock futures and options in 2008.

The SK Group boss had remained free since he was indicted a year ago.

The energy-to-telecom conglomerate, which includes top mobile carrier SK Telecom, said Chey would appeal the verdict.

It was not Chey's first conviction.

In 2003 he was sentenced to three years in prison for his role in a $1.3 billion accounting fraud. He was released after just seven months and, in 2008, was finally granted a full presidential pardon, wiping his record clean.

It is not unusual for senior executives with convictions for crimes including tax evasion and embezzlement to remain in charge of South Korea's family-dominated conglomerates.

The Seoul Central District Court said in its statement that Chey had betrayed the public trust in his group.

"He should be reproached for using subsidiaries as a tool for his crime," it said.

Chey's younger brother and group vice chairman Chey Jae-Won was acquitted on charges that he was a knowing accomplice to the embezzlement.

South Korea has a long history of pardoning powerful tycoons.

Hyundai Motor head Chung Mong-Koo, who had been convicted of embezzlement and other charges, was pardoned in 2008, and Samsung Electronics chairman Lee Kun-Hee - convicted of tax evasion - was pardoned in 2009.

- AFP/de

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Ship stranded on reef to be cut

USS Guardian grounded on Philippine reef

USS Guardian grounded on Philippine reef

USS Guardian grounded on Philippine reef

USS Guardian grounded on Philippine reef

USS Guardian grounded on Philippine reef

USS Guardian grounded on Philippine reef

USS Guardian grounded on Philippine reef

USS Guardian grounded on Philippine reef

STORY HIGHLIGHTS

• U.S. minesweeper has been stuck off Philippines since January 17


• Attempts to float the ship at high tide failed


• Crews are removing fuel, hazardous materials, salvageable things


• Fragile reef hosts 500 fish species, 350 coral species

(CNN) -- A 224-foot-long U.S. warship will have to be cut into smaller pieces to get it off a Philippine reef where it grounded two weeks ago, Navy officials said Wednesday.

They said that's the only way to prevent further damage to the Tubbataha Reef, a Philippine national park and UNESCO World Heritage site, where the USS Guardian, an Avenger-class mine countermeasures ship, ran aground on January 17.

Survivors mark anniversary of cruise ship grounding

Lt. Anthony Falvo, a U.S. Navy Pacific Fleet spokesman in Pearl Harbor, Hawaii, told CNN on Wednesday that Navy salvage experts are still formulating the details of how they'll cut up the 1,312-ton minesweeper.

Crews are now working to remove any hazardous materials from the vessel and will look to save anything that could still prove useful to the Navy. The ship's 15,000 gallons of diesel fuel were removed last week.

"We will strip it out beforehand. We'll work to salvage any parts that can be salvaged," Falvo said. Then the cutting will begin.

Illegal weapons seized from ship

Heavy-lift cranes are expected at the site of the grounding, about 80 miles (130 kilometers) east-southeast of Palawan Island in the Sulu Sea, in the next few days, Falvo said. The cranes will lift the pieces of the Guardian onto barges or other ships to be taken away.

Last week, the Navy said it hoped to lift the ship off the reef in its entirety. But Falvo said Wednesday that after reviewing all the alternatives, it was decided it would have to be cut up.

After it struck the reef, initial efforts to free the Guardian at high tide were unsuccessful. Its crew of 79 was evacuated to other vessels, and the ship was battered by waves that pushed it farther onto the reef, causing leaks in its wood-and-fiberglass hull.

"The ship cannot move on its own, and it is not operational," Rear Adm. Tom Carney said last week.

Stripping, cutting up and removing the Guardian from the reef could take more than a month, Falvo said Wednesday.

This isn't the first time the Navy has had to undertake such an operation, but it hasn't happened in more than 40 years. In August 1971, the supply ship USS Regulus grounded in Hong Kong harbor during Typhoon Rose, Falvo said. It took more than a month to cut that vessel up and remove it, he said. A similar operation was also conducted in 1916, he said.

As for what the loss of the Guardian, one of 14 Avenger class mine countermeasures ships in the Navy, means for the service, Falvo said it was too early to speculate. He pointed out that the vessel was in the 23rd year of its expected 30-year lifespan.

The ship cost about $61 million to build, Lt. Cmdr. James Stockman, a Navy spokesman, said last week.

As for other costs, Philippine officials said last week that the Philippines would seek compensation for damage to the reef. About 1,000 square meters (about 10,760 square feet) of it have been damaged.

"It's a damage to a world heritage site. It's a damage to our natural resources. It's a damage to an important site. We cannot but put emphasis on the importance of this reef as a heritage site," presidential spokesman Edwin Lacierda said.

Navy commander apologizes for grounding

The reef is home to a vast array of sea, air and land creatures, as well as sizable lagoons and two coral islands. About 500 species of fish and 350 species of coral can be found there, as can whales, dolphins, sharks, turtles and breeding seabirds, according to UNESCO.

The salvage operation must ensure that the reef sustains no further damage, Lacierda said.

Navy officials are still trying to determine how the Guardian ended up on the reef.

Stockman, the Navy spokesman, said last week that the U.S. National Geospatial-Intelligence Agency, which prepares the digital navigation charts used by the Navy, has reported the location of the reef was misplaced on a chart by nine miles.

"The U.S. Navy investigation will review what charts Guardian was using. While this erroneous navigation chart data is important information, no one should jump to conclusions," Stockman said. "It is critical that the U.S. Navy conduct a comprehensive investigation that assesses all the facts and circumstances surrounding the Guardian grounding."

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N.Y. Times: China hacked our computers for past four months

BEIJING The New York Times says Chinese hackers repeatedly penetrated its computer networks over the past four months, stealing reporters' passwords and hunting for files on an investigation into the wealth amassed by the family of one of China's leaders.

In a report released late Wednesday, the Times said security experts hired to plug the breach tracked the attacks to China, in some cases computers identified with the Chinese military.

The newspaper reports that, "After surreptitiously tracking the intruders to study their movements and help erect better defenses to block them, The Times and computer security experts have expelled the attackers and kept them from breaking back in."

The attacks coincided with a Times investigation into how the family and relatives of Premier Wen Jiabao built a fortune worth more than $2 billion. The report says no Times customer data was compromised but that the passwords for all employees were stolen.

The newspaper adds, "The hackers tried to cloak the source of the attacks on The Times by first penetrating computers at United States universities and routing the attacks through them, said computer security experts at Mandiant, the company hired by The Times. This matches the subterfuge used in many other attacks that Mandiant has tracked to China."

Security experts say China carries out a widespread cyber-spying operation to steal secrets and intimidate critics.

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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."

Junior Seau Had Brain Disease, Researchers Say 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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The 10,000-year bender: Why humans love a tipple

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S'pore moves up to 2nd spot in trust survey

SINGAPORE: Singapore has moved up to the number two spot for the most trusting nation in the world, according to the 2013 Edelman Trust Barometer. It was third in 2012 and seventh in 2011.

Edelman, which measured levels of trust in institutions in 26 countries worldwide, said on Wednesday that Singapore's total trust score rose by nine points and is three points more than the global average increase.

Trust levels rose across three of the four institutions measured -- business (up 11 points), non-governmental organisations (up 11 points) and government (up 9 points).

At 82 per cent, trust in Singapore government recovered to approach the 2010 high of 84 per cent.

Trust levels in the media remained stable and high.

Edelman said while the government and business fared well in the latest trust survey, there remains scepticism about trust in their leadership.

Only 19 per cent of Singaporeans in the general population trust business leaders to tell the truth, no matter how complex or unpopular it is. While trust in government leaders is higher than in business leaders, there remains room for improvement.

Edelman said the lack of trust in leaders, compared with the institutions they lead, is a trend in all the markets where trust was measured. This, it said, points to a common need to increase transparency at the leadership level.

-CNA/ac

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Child hostage drama in Ala. after gunman kills school bus driver

MIDLAND CITY, Ala. An unidentified man boarded a school bus, shot the driver several times, then escaped with a 6-year-old passenger, prompting an hours-long standoff with police that remained unresolved early Wednesday.

The Dale County Sheriff says the man shot the driver in Midland City on Tuesday after he refused to let the child off the bus. The driver later died of his wounds. His identity wasn't released.

The shooter took the child to an area behind a nearby church, and police were negotiating with him, authorities said.

Midland City police would not comment, and a call to the Dale City Sheriff's office was not answered Tuesday.

Authorities from multiple agencies were on the scene and nearby residents were evacuated from their homes as a precautionary measure, said Rachel David, a spokeswoman for the police department in the nearby town of Dothan.

"Authorities also confirmed the presence of a child at the scene but are giving no further information at this time," David said in a news release late Tuesday.

CBS Dothan, Ala. affiliate WTVY-TV reports the hostage is male and was being held in a storm shelter at the alleged gunman's home.

The station says the FBI has been called in, and area schools have cancelled Wednesday classes.

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Iran launches monkey into space

Lisa Grossman, physical sciences reporter

Last summer, the Iranian Space Agency announced their plan to send a monkey into space - and now they've apparently done it.

According to Iranian state-run television, a press release on the space agency's website, and photos of the event, Iran sent a live rhesus monkey into sub-orbital space aboard a small rocket called Pishgam, or Pioneer. There's even a video posted on YouTube that appears to be of the launch (though New Scientist could not confirm its authenticity).

The report has not been confirmed independently, however, and the US air force's North American Aerospace Defense Command (NORAD) has not reported seeing any missile launches from Iran.

But independent observers say the launch looks legitimate.

"Really, I see no reason not to take their word for it," says Jonathan McDowell, an astronomer at the Harvard-Smithsonian Center for Astrophysics who also keeps a log of space launches. He says he's convinced by the photos and discussions he's had with several knowledgeable source in online forums.

In photos released on the Iranian Space Agency's website, the rocket looks like the same kind the agency has launched before, but with a larger nose cone designed to fit a small chamber that can support life. Images also showed a live rhesus monkey strapped to a small seat.

The reports say the rocket went straight up 120 kilometres, which McDowell says qualifies as outer space, but not high enough to reach orbit, and came back down with a parachute.

It's unclear exactly when the launch took place. The press release says that the launch happened on the birthday of Mohammed the Prophet, which is celebrated by Shiites on 29 January, but was celebrated last week elsewhere in the world.

Some countries worry that Iranian rockets capable of carrying animals or people could also carry weapons. Iran has denied any military intention.

"This is not a scary thing because this is not a big new rocket that could hit America or anything like that," McDowell says. "There's nothing military to this. It's purely for propaganda. Nevertheless, it advances their science and their technology by being able to do it."

Iran says the launch is a first step towards sending humans into space, which they intend to do in the next 5 to 8 years. To do that, McDowell says, they'll need to build a larger rocket. The country currently has a vehicle called Safir that has successfully put satellites in orbit, and is developing a more powerful launcher called Simorgh.

The next step will probably be to either launch Safir to carry a human to sub-orbital space, or an unmanned Simorgh flight into orbit to make sure mission controllers can return it to the ground safely.

"They don't want to repeat what the Soviets did" in 1957, McDowell says, "which is put a living being in orbit before you figure out how to get it back."

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Infrastructure development to keep pace with population growth

SINGAPORE: The government is planning to build 700,000 new homes by 2030.

That is one of the long-term plans to support the projected increase in population which is expected to hit 6.9 million in about 20 years.

Some Singaporeans have observed that population growth in Singapore has outpaced infrastructure development in the last five years.

The government is now planning and investing in advance to accommodate a larger population.

Beyond just relieving strains on public transport and housing today are long-terms plans to ramp up infrastructure developments to support a population of up to six million in 2020 and then a population of up to 6.9 million in 2030.

There are already plans to add 800 buses over five years, and by 2030, to double of the rail network to 360 kilometres.

This means the addition of three new MRT lines and an extension of two existing lines over the next nine years.

Come 2030, there will be another two new lines and three extensions, allowing eight in 10 homes to be within a 10-minute walk from a train station.

To further alleviate the strain on public transport, more jobs will be located near residential areas, reducing the need to commute.

The White Paper has named Woodlands, Serangoon and Punggol as possible growth areas to create more space for businesses. It also said the Jurong Lake District, Paya Lebar Central and One-North will be expected to mature by then.

More healthcare facilities are also in the pipeline with three general hospitals, five community hospitals and two medical centres set to open between 2014 and 2020.

On the way too are 200,000 new homes which will be ready by 2016.

National Development Minister Khaw Boon Wan said even more land has been set aside to build another 500,000 homes until 2030.

Mr Khaw said: "I am very confident that we will be able to resolve this housing shortage very soon because once you say let's build a town, it takes more years. That's why I begin to publicise what are the number of housing units that will be coming on stream in 2014 and 2015. They are very big numbers and that is to assure Singaporeans that there are enough homes for you. Don't panic, don't need to worry.

"Practically for first timers or new family formations, the problem is actually largely resolved. There is some mismatch purely because of our balloting system. If you look at the figure, every year, (there is around 15,000) new family formations involving Singaporeans but I'm building 25,000 new units a year and we've been doing so. This is into the third year now. There are many more new units being formed than the number of new family formations.

"And effectively, what is happening is we are now meeting future demand because the fiance scheme is for couples who are not yet married. They are being rational. They are planning ahead so that hopefully when the key is received, they can also exchange rings, so that they time it properly, which is a good thing, which is something that we support."

Possible sites for these new homes include new towns in Bidadari, Tampines North and Tengah but some will also be built in mature estates, allowing children to stay close to their parents.

Mr Khaw said: "Wherever possible, where there are possible sites for development, we have to do so. And that is why sometimes, it is a bit painful for us to have to remove some trees, which I know many people are upset about. We are equally upset because I love trees. I'm a treehugger and we think many times before to chop down a tree or not to chop down a tree. But sometimes it can't be helped because of larger objectives, larger benefits."

Mr Khaw added that good urban planning to achieve a high quality of living is a top priority for the government.

He said: "Unlike other cities, they have hinterlands to go to. Thanks to former Prime Minister Lee Kuan Yew, he was already ahead of his time. When we talk about the terms you hear today - green, garden city, sustainable living, etc., he was really ahead of his time because he knew that this was the only way for us to survive because this is the only place we have. This is the only city, this is our home, and if it is polluted, dirty, crowded, congested, then what kind of a life will we get?"

There will be more green spaces and parks, and by 2030, at least 85 per cent of Singapore's households will live within 400 metres of a park.

The National Development Ministry is expected to release more details on land use plans this week.

- CNA/fa

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Thick smog cloaks Beijing again

BEIJING Dangerously high pollution levels shrouded Beijing in smog Tuesday for the second time in about two weeks, forcing airlines to cancel flights because of poor visibility and prompting the city government to warn residents to stay indoors.

The outlines of buildings in the capital receded into a white mist as pedestrians donned face masks to guard against the thick, caustic air.

The U.S. Embassy reported a level of PM2.5 -- one of the worst pollutants -- at 526 micrograms per cubic meter, or "beyond index," and more than 20 times higher than World Health Organization safety levels over a 24-hour period.

The Beijing city government advised residents to stay indoors as much as possible because the pollution was "severe." It said that, because there was no wind, the smog probably would not dissipate quickly.

Visibility was less than 109 yards in some areas of eastern China, the official Xinhua News Agency reported. Air China cancelled 14 domestic flights in or out of the Beijing airport, and an airport in the eastern city of Qingdao was closed, cancelling 20 flights.

The disruptions come in the first week of the country's peak, six-week period for travel, linked to the Feb. 10 Lunar New Year. Every year, China's transport system bursts at the seams as tens of millions of people travel for the holiday, in the world's largest seasonal migration of people.

Celebrity real estate developer Pan Shiyi, who has previously pushed for cities to publish more detailed air quality data, called Tuesday for a "Clean Air Act" and said he would use his status as a delegate to the National People's Congress to propose such legislation.

In less than three hours, his post was forwarded more than 2,300 times and received 14,184 votes, with 99.1 percent in favor.

Beijing also had exceptionally high pollution two weeks ago, with the U.S. Embassy readings of PM2.5 reaching as high as 886 micrograms per cubic meter.

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Is Obama about to blow his climate credentials?

The US president could be poised to approve the doubling of imports of tar sands oil, one of the filthiest fuels on Earth

FACED with rising anger from environmentalists last year over his plans for a transcontinental pipeline to deliver treacly Canadian tar sands to Texas oil refineries on the Gulf of Mexico, the CEO of TransCanada, Russ Girling, expressed surprise. After all, his company had laid 300,000 kilometres of such pipes across North America. "The pipeline is routine. Something we do every day," he told Canadian journalists.

But that's the point. It is routine. The oil industry does do it every day. And if it carries on, it will wreck the world.

We need not rely on climate-changing fossil fuels. Alternative energy technologies are available. But fossil fuels, and the pipelines and other 20th-century infrastructure that underpin them, have created what John Schellnhuber, director of Germany's Potsdam Institute for Climate Impact Research, describes in a new paper as "lock-in dominance" (PNAS, DOI: 10.1073/pnas.1219791110). Even though we know how harmful it is, the "largest business on Earth" has ossified and is proving immovable, he says.

The question is how to break the lock and let in alternatives. Schellnhuber, a wily and worldly climate scientist, has an idea, to which I will return. But first the tar-sands pipeline, known as Keystone XL in the parlance of outsize clothing. Proponents say it would create jobs and improve US energy security. But for environmentalists in the US, the decision - due any time - on whether it should go ahead is a touchstone for Barack Obama's willingness to confront climate change in his second term.

Superficially, Keystone XL doesn't look like a huge deal. Since 2010, there has been a cross-border pipe bringing oil from tar sands in northern Alberta to the US Midwest. But this second link would double capacity and deliver oil to the refineries of the Gulf for global export. It looks like the key to a planned doubling of output from one of the world's largest deposits of one of the world's dirtiest fuels. And because the pipe would cross the US border, it requires state department and presidential sign-off.

Environmentalists are up in arms. They fear leaks. No matter what its sponsors suggest, this is no ordinary pipeline. The tar-sands oil - essentially diluted bitumen - is more acidic than regular oil and contains more sediment and moves at higher pressures. Critics say it risks corroding and grinding away the insides of the pipes. The US National Academy of Sciences has just begun a study on this, but its findings will probably be too late to influence Obama.

If there is a leak, clean-up will be difficult, as shown by the messy, protracted and acrimonious attempt to cleanse the Kalamazoo river in Michigan after tar-sands oil oozed into it in 2010.

To make matters worse, the pipeline would cross almost the entire length of the Ogallala aquifer, one of the world's largest underground water reserves, from South Dakota to Texas. Ogallala is a lifeline for the dust-bowl states of the Midwest. While TransCanada has agreed to bypass the ecologically important Sand Hills of Nebraska, where the water table is only 6 metres below the surface in places, a big unseen spill could still be disastrous.

Climate change is still the biggest deal. Extracting and processing tar sands creates a carbon footprint three times that of conventional crude. Obama would rightly lose all environmental credibility if he were to approve a scheme to double his country's imports of this fossil-fuel basket case. Yet he may do it. Why? Because of fossil-fuel lock-in. Changing course is hard. Really hard.

Part of the reason for the lock-in is the vast infrastructure dedicated to sustaining the supply of coal, oil and gas. There is no better symbol of that than a new pipeline. Partly it is political. Nobody has more political muscle than the fossil fuel industry, especially in Washington. And partly it is commercial. As Schellnhuber puts it: "Heavy investments in fossil fuels have led to big profits for shareholders, which in turn leads to greater investments in technologies that have proven to be profitable."

The result is domination by an outdated energy system that stifles alternatives. The potential for a renewable energy revolution is often compared to that of the IT revolution 30 years ago. But IT had little to fight except armies of clerks. Schellnhuber compares this lock-in to the synapses of an ageing human brain so exposed to repetitious thought that it "becomes addicted to specific observations and impressions to the exclusion of alternatives". Or, as Girling puts it, new pipelines become "routine".

What might free us from this addiction? With politicians weak, an obvious answer is to hold companies more financially accountable for environmental damage, including climate change. But Schellnhuber says this won't be enough unless individual shareholders become personally liable, too.

Here, he says, the problem is the public limited company (PLC), or publicly traded company in the US, which insulates shareholders from the consequences of decisions taken in their name. Even if their company goes bankrupt with huge debts, all they lose is the value of their shares. The PLC was invented to promote risk-taking in business. But it can also be an environmental menace, massively reducing incentives for industries to clean up their acts.

"If shareholders were held liable," he says, "then next time they might consider the risk before investing or reinvesting." More importantly, it could prevent us being locked into 20th century technologies that are quite incapable of solving 21st century problems. Fat chance, many might say. But just maybe Keystone XL and its uncanny ability to draw global attention will help catalyse growing anger at the environmental immunity of corporate shareholders.

Fred Pearce is a consultant on environmental issues for New Scientist

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Man in "trolley bag" case pleads guilty to failing to report death

SINGAPORE: The lover of a businessman acquitted of murder in the "trolley bag" case pleaded guilty to a charge of failing to report the death to the police.

Pee Weai Hong, 33, admitted on Monday that he did not report the death of 28-year-old Dylan Wong Teck Siong on 2 April 2011 when he learnt about it the next day.

Mr Wong's decomposed body was stuffed in a trolley bag and was found in the waters off Sentosa on 16 April.

A businessman, Teo Boon Leng, was acquitted on 24 January of murdering Mr Wong.

The court heard on Monday that the three men were involved in a love triangle, which started two months before Mr Wong's death.

On the night Mr Wong died, Pee was not at the Keppel Bay apartment where the three men lived.

- CNA/xq

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In charred club, cell phones ring with calls for the dead

Hundreds dead in Brazil nightclub fire

Hundreds dead in Brazil nightclub fire

Hundreds dead in Brazil nightclub fire

Hundreds dead in Brazil nightclub fire

Hundreds dead in Brazil nightclub fire

Hundreds dead in Brazil nightclub fire

Hundreds dead in Brazil nightclub fire

Hundreds dead in Brazil nightclub fire

Hundreds dead in Brazil nightclub fire

Hundreds dead in Brazil nightclub fire

Hundreds dead in Brazil nightclub fire

Hundreds dead in Brazil nightclub fire

Hundreds dead in Brazil nightclub fire

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STORY HIGHLIGHTS

• Cell phones left in the club ring, go unanswered amid the ruins


• The club's license had expired in August and had not been renewed


• At least 80 of those killed were students at the Federal University of Santa Maria

Are you there? Share your story.

Santa Maria, Brazil (CNN) -- Workers combing through the charred wreckage of Kiss nightclub in southern Brazil on Sunday encountered the eerie sound of ringing cell phones.

Glauber Fernandes, a reporter from CNN affiliate Band News, explains.

"It was a really complicated scene. A lot of smoke, a lot of shoes that was left, cell phones, because everybody tried to get out of there running," he said. "While we were there, we saw the cell phones were ringing. It was parents, friends, trying to know about what was happening and nobody was answering."

A fire swept through the packed, popular nightclub in Santa Maria early Sunday, killing at least 233 people -- enough to fill a large plane -- Brazilian Health Minister Alexandro Padilha told reporters. Of those, 185 have been identified so far.

Many apparently died from smoke inhalation. Others were trampled in the rush for the exits, one security guard told Band News.

More than 90 people were hospitalized, Padilha said, including 14 patients with severe burns.

Deadly blazes: Nightclub tragedies in recent history

About 2,000 people were inside the club when the fire broke out -- double the maximum capacity of 1,000, said Guido de Melo, a state fire official.

Investigators have received preliminary information that security guards stopped people from exiting the club, he told Globo TV.

"People who were inside the facility informed us ... that security guards blocked the exit to prevent people there from leaving, and that's when the crowd starting panicking, and the tragedy grew worse," he said.

The fire started "from out of nowhere" on a stage at the club and quickly spread to the ceiling, witness Jairo Vieira told Band News.

"People started running," survivor Luana Santos Silva told Globo TV. "I fell on the floor."

There was a pyrotechnics show going on inside the club when the fire started. Authorities stopped short of blaming it for the blaze, saying the cause was still under investigation.

The Kiss nightclub is popular with young people in Santa Maria, which is home to a number of universities and colleges, including the Federal University of Santa Maria. At least 80 of those killed Sunday were students at that school, it said.

The blaze broke out during a weekend when students were celebrating the end of summer. Many universities are set to resume classes on Monday.

Video from the scene showed firefighters shooting streams of water at the club and shirtless men trying to break down a wall with axes.

Smoke billowed outside the front of the building as the stench of fire filled the air, said Max Muller, who was riding by on his motorbike when he saw the blaze.

Muller recorded video of a chaotic scene outside the club, which showed emergency crews tending to victims and dazed clubgoers standing in the street. Bodies lay on the ground beside ambulances.

Friends who were inside the club told him that many struggled to find the exits in the dark. Muller, who was not inside the club Sunday morning but has been there twice before, said there were no exit signs over the doors. It is rare to see such signs in Brazilian clubs.

Valderci Oliveira, a state lawmaker, told Band News that he saw piles of bodies in the club's bathroom when he arrived at the scene hours after the blaze. It looked "like a war zone," he said.

Read more: How to protect yourself in a crowd

Police told Band News that 90% of the victims were found in that part of the club.

The roof collapsed in several parts of the building, trapping many inside, said Fernandes, the reporter from Band News.

For others, escaping was complicated by the fact that guards initially stopped people from leaving, he said, echoing comments from the state fire official.

"Some guards thought at first that it was a fight, a huge fight that happened inside the club and closed the doors so that the people could not leave without paying their bills from the club," Fernandes said.

The deadly fire is sure to shine a spotlight on safety in Brazil, which is set to host the World Cup next year and the Olympics in 2016.

Many wept as they searched for information outside a local gymnasium where bodies were taken for identification later Sunday. Inside, Brazilian President Dilma Rousseff met with family members and friends as they waited on bleachers for word of their loved ones.

Rousseff became teary-eyed as she spoke of the fire to reporters in Chile earlier Sunday. She had been attending a regional summit there, but cut short the trip and returned to Brazil early to deal with the aftermath of the tragedy.

"The Brazilian people are the ones who need me today," she said. "I want to tell the people of Santa Maria in this time of sadness that we are all together."

The fire started around 2 a.m. after the acoustic insulation in the Kiss nightclub caught fire, said Civil Defense Col. Adilomar Silva.

An accordionist who had been performing onstage with a band when the blaze broke out was among the dead, drummer Eliel de Lima told Globo TV.

Police were questioning the club's owner and interviewing witnesses as part of an investigation into what caused the blaze, state-run Agencia Brasil reported.

The club's license had expired in August and had not been renewed, local fire official Moises da Silva Fuchs told Globo TV.

The incident called to mind a 2003 nightclub fire in Rhode Island where pyrotechnics used by the heavy metal band Great White ignited a blaze that killed 100 people.

Pyrotechnics were also involved in a 2004 nightclub fire in Argentina that killed 194 people and a 2009 explosion at a nightclub in Russia that left more than 100 dead.

Shasta Darlington reported from Santa Maria, Brazil. Marilia Brocchetto and Dana Ford reported from Atlanta. CNN's Catherine E. Shoichet, Helena DeMoura and Samira Jafari contributed to this report.

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