Arctic sunshine cranks up threat from greenhouse gases

IT'S a solar double whammy. Not only does sunlight melt Arctic ice, but it also speeds up the conversion of frozen organic matter into carbon dioxide.

The amount of carbon in dead vegetation preserved in the far northern permafrost is estimated to be twice what the atmosphere holds as CO₂. Global warming could allow this plant matter to decompose, releasing either CO₂ or methane – both greenhouse gases. The extent of the risk remains uncertain because the release mechanisms are not clear.

Rose Cory at the University of North Carolina at Chapel Hill and her colleagues analysed water from ponds forming on melting permafrost at 27 sites across the Arctic. They found that the amount of CO₂ released was 40 per cent higher when the water was exposed to ultraviolet light than when kept dark. This is because UV light, a component of sunlight, raises the respiration rate of soil bacteria and fungi, amplifying the amount of organic matter they break down and the amount of CO₂ released.

The thawing Arctic is emerging as a potentially major source of positive feedback that could accelerate global warming beyond existing projections. "Our task now is to quantify how fast this previously frozen carbon may be converted to CO₂, so that models can include the process," Cory says.

Journal reference: PNAS, DOI: 10.1073/pnas.1214104110.

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Australia central bank sells scandal-hit note firm stake

SYDNEY: Australia's central bank on Tuesday announced the sale of its stake in scandal-hit note printing firm Securency and said an independent governance review had cleared it of "inappropriate" insight.

The Reserve Bank of Australia sold its 50 per cent holding in Securency, accused of taking bribes to win contracts in Asia, to British venture partner Innovia Films for A$65 million (US$66.7 million).

"The sale of the bank's interest in Securency is in accordance with the bank's long-standing intention to exit from the joint venture once Securency had established itself as a viable long-term supplier in the international market," the RBA said in a statement.

Note Printing Australia, a second RBA firm implicated in the Asia bribery scandal which the media broke in 2009, would remain a "wholly-owned subsidiary of the bank", it added.

The RBA also released a review into the governance of Securency and NPA by independent consultancy Cameron Ralph which cleared it of serious oversight issues.

Cameron Ralph said the RBA "gave reasonable consideration as to the governance arrangements for the two companies, and put in place processes for their oversight and reporting which were broadly consistent with usual practice at the time".

It appointed people to the firms' boards that it was "entitled to believe could direct the affairs of the companies with due care, diligence and skill", received regular reports and responded in a "considered and deliberate way".

The bank took "appropriate action where the entities appeared not to be performing in line with expectations and/or standards", Cameron Ralph added.

"Clearly, with the benefit of hindsight, there could have been more oversight applied to the activities of the companies, which may have detected earlier the alleged illegal payments" it said.

"But that does not mean that the Bank's oversight at the time was inappropriate."

Eight executives from Securency and NPA are facing claims they conspired to bribe officials at foreign banks to secure contracts to make plastic banknotes.

Both companies have also been charged over the alleged racket, which involved contracts in Indonesia, Malaysia, Vietnam and Nepal.

- AFP/ck

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Two charged in death of girl who performed at inaugural

By Steve Almasy and Ted Rowlands, CNN

updated 9:31 PM EST, Mon February 11, 2013

Michael Ward, 18, and Kenneth Williams, 20, were charged in the killing of Chicago honor student Hadiya Pendleton.

STORY HIGHLIGHTS

• NEW: Killer was on probation for gun crime, police say


• NEW: Shootings were a case of mistaken identity in street gang feud


• Hadiya Pendleton was shot to death a week after she performed in Washington


• First lady Michelle Obama attended her funeral

Chicago (CNN) -- The teenager who police say shot and killed Chicago honor student Hadiya Pendleton was on probation for unlawful use of a firearm, Police Superintendent Garry McCarthy said Monday night.

Michael Ward, 18, and Kenneth Williams, 20, were each charged with one count of murder and two counts of attempted murder, McCarthy told reporters.

Ward confessed to shooting Hadiya and two others in late January in a case of mistaken identity, McCarthy said.

Police said Ward and Williams were gang members seeking revenge against the people who had shot Williams in July.

"Ward crept on foot, spraying gun fire," McCarthy said.

McCarthy said Ward was sentenced to two years' probation in January 2012 for unlawful use of a firearm.

The charges come 12 days after Hadiya was shot to death at a park in what her godfather, Damon Stuart, described as an "ideal community" on Chicago's South Side.

Her death occurred a week after she performed at one of the events surrounding Obama's second inauguration.

The killing -- which occurred in the city's Hyde Park neighborhood near the Obamas' Chicago home -- drew the first couple's attention.

First lady Michelle Obama attended Hadiya's funeral Saturday, and her husband wrote a note to Hadiya's family that was printed on the funeral program: "We know that no words from us can soothe the pain, but rest assured that we are praying for you, and that we will continue to work as hard as we can to end this senseless violence."

Hadiya, who often urged friends to stay away from gangs, was an honor student and band majorette at King College Prep School.

Her slaying -- the 42nd in the city this year -- also highlighted the problem of gun violence in Chicago. More than 500 people were fatally shot in 2012.

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Army Sgt. shares story behind Medal of Honor

(CBS News) PENTAGON - President Barack Obama awarded the Medal of Honor to former Army Staff Sgt. Clinton Romesha on Monday.

In 2009, with U.S. forces in eastern Afghanistan under Taliban attack, a wounded Romesha ducked enemy fire to rescue other wounded soldiers and recover bodies of the fallen.

Army staff sergeant receives Medal of Honor for actions during Afghanistan war battle

You have to see Combat Outpost Keating to realize just how indefensible it was to an attack from Taliban fighters. Just 52 American soldiers were down there, as well as Staff Sgt. Romesha.

"We were taking everything from, you know, very precise sniper fire, automatic weapon fire from machine gun positions. We were taking mortar and indirect fire, RPG fire," Romesha said.

The soldier said fire was coming 360 degrees all around, from every high point.

"We had taken casualties from the first barrage of fire that came in and continued to take them throughout the remainder of the fire fight," he said.

A photo of Clinton Romesha

/

506infantry.org

A re-creation of the battle shows Romesha was everywhere that day, running across open ground to reinforce one weak point after another.

"At one point I witnessed three enemy fighters walk straight through our front gate like they owned the place," he said. "To see that, you know, it's just unreal for a second, but that's ours. We're not going to let them do that."

Although hit in the side by shrapnel from a rocket propelled grenade, Romesha was determined to do more than just survive.

"We weren't going to be beat that day and we were going to take it back," he said.

But they were up against 300 enemy fighters. Air strikes finally broke the enemy assault.

Afterwards, bullet-riddled Humvees and burned out buildings showed the kind of fire he and his men had braved.

Left: Raw video of the award ceremony

"We ended up losing eight, eight brave soldiers that day," Romesha said.

Three days later the Americans left Keating for good. Romesha said getting the medal was an emotional experience.

"It's hard to say. You win or lose, but to know, to know we had so many great soldiers there that stood proud and did their job. That's just an amazing thing to witness," he said.

What was gained that day? Nothing. What did Clint Romesha and his men achieve? Everything.

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Benedict's Legacy Marred by Sex Abuse Scandal

When Pope Benedict XVI resigns at the end of this month, he leaves behind a Church grappling with a global fallout from sex abuse and a personal legacy marred by allegations that he was instrumental in covering up that abuse.

As the sex abuse scandal spread from North America to Europe, Benedict became the first pope to meet personally with victims, and offered repeated public apologies for the Vatican's decades of inaction against priests who abused their congregants.

"No words of mine could describe the pain and harm inflicted by such abuse," the pope said in a 2008 homily in Washington, D.C., before meeting with victims of abuse for the first time. "It is important that those who have suffered be given loving pastoral attention." During the same trip to the U.S., he met with victims for the first time.

For some of the victims, however, Benedict's actions were "lip service and a public relations campaign," said Jeff Anderson, a Minnesota lawyer who represents victims of sex abuse. For 25 years, Benedict, then known as Cardinal Joseph Ratzinger, headed the Vatican office responsible for investigating claims of sex abuse, but he did not act until he received an explicit order from Pope John Paul II.

In 1980, as Archbishop of Munich, Ratzinger approved plans for a priest to move to a different German parish and return to pastoral work only days after the priest began therapy for pedophilia. The priest was later convicted of sexually abusing boys.

Vincenzo Pinto/AFP/Getty Images

PHOTOS: Church Sex Scandals

In 1981, Cardinal Ratzinger became head of the Vatican's Congregation for the Doctrine of the Faith – the office once known as the Inquisition -- making him responsible for upholding church doctrine, and for investigating claims of sexual abuse against clergy. Thousands of letters detailing allegations of abuse were forwarded to Ratzinger's office.

A lawsuit filed by the Center for Constitutional Rights on behalf of the Survivors' Network of Those Abused by Priests (SNAP), a victims' rights group, charges that as head of the church body Ratzinger participated in a cover-up of abuse. In an 84-page complaint, the suit alleges that investigators of sex abuse cases in several countries found "intentional cover-ups and affirmative steps taken that serve to perpetuate the violence and exacerbate the harm."

"Ratzinger, now Pope Benedict XVI, either knew and/or some cases consciously disregarded information that showed subordinates were committing or about to commit such crimes," the complaint says.

Jeffrey Lena, the Vatican's lawyer in the U.S., told the AP the complaint was a "ludicrous publicity stunt and a misuse of international judicial processes."

In the 1990s, former members of the Legion of Christ sent a letter to Ratzinger alleging that the founder and head of the Catholic order, Father Marcial Maciel, had molested them while they were teen seminarians. Maciel was allowed to continue as head of the order.

In 1996, Ratzinger didn't respond to letters from Milwaukee's archbishop about a priest accused of abusing students at a Wisconsin school for the deaf. An assistant to Ratzinger began a secret trial of the priest, Father Lawrence Murphy, but halted the process after Murphy wrote a personal appeal to Ratzinger complaining of ill health.

In 2001, Pope John Paul II issued a letter urging the Congregation of the Doctrine of the Faith to pursue allegations of child abuse in response to calls from bishops around the world.

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Liver cancer survival time tripled by virus

The virus used in the vaccine that helped eradicate smallpox is now working its magic on liver cancer. A genetically engineered version of the vaccinia virus has trebled the average survival time of people with a severe form of liver cancer, with only mild, flu-like side effects.

Thirty people with hepatocellular carcinoma received three doses of the modified virus – code-named JX-594 – directly into their liver tumour over one month. Half the volunteers received a low dose of the virus, the other half a high dose. Members of the low and high-dose groups subsequently survived for, on average, 6.7 and 14.1 months respectively. By contrast, trials several years ago showed that sorafenib, the best existing medication for this cancer, prolonged life by only three months.

Two of the patients on the highest viral dose were still alive more than two years after the treatment. "It's a very substantial survival benefit," says Laurent Fischer, president of Jennerex, the company in San Francisco developing the treatment under the trade name Pexa-Vec.

Besides shrinking the primary tumour, the virus was able to spread to and shrink any secondary tumours outside the liver. "Some tumours disappeared completely, and most showed partial destruction on MRI scans," says David Kirn, head of the study at Jennerex. Moreover, the destruction was equally dramatic in the primary and secondary tumours.

"This clinical trial is an exciting step forward to help find a new way of treating cancers," says Alan Melcher of the University of Leeds, UK, who was not involved in the study. "It helps demonstrate the cancer-fighting potential of viruses, which have relatively few side effects compared with traditional chemo or radiotherapy," he says. "If it proves effective in larger trials, it could be available to patients within five years."

The fact that the virus appears able to spread to secondary tumours suggests that simply injecting the virus into the bloodstream may be effective. A trial to compare this treatment with injecting the virus directly into a tumour is under way.

Targeted at cancer

The virus has had a gene coding for an enzyme called thymidine kinase snipped out. The enzyme enables the virus to recognise and infect dividing cells. By removing the gene, the virus's developers have reduced the likelihood of healthy dividing cells being infected.

Instead, the virus exclusively attacks cancerous tissue, by targeting two genes that have increased activity in tumour cells. One genes is associated with an epidermal growth factor receptor, which stimulates the cancer to grow. The other is associated with a vascular endothelial growth factor, which enables the cancer to recruit its own blood supply. The virus reduces the activity of both genes, causing the infected cancer cell to wither and die.

What's more, the virus carries extra genes to prod the body's own immune system into action against the cancer. One produces granulocyte colony stimulating factor, a protein that encourages production of extra white blood cells at sites of infection. The other produces a protein not naturally found in humans, called Lac-Z, that earmarks infected cells for destruction.

Fischer says that to date, more than 200 people have received the virus, which has also shown promise against other types of cancer, including those of the kidney and skin. But he warns that not everyone sees a benefit. "We know why patients respond, but not why they don't," he says.

Journal reference: Nature Medicine, DOI: 10.1038/nm.3089

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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Missing 13-year-old-boy found

SINGAPORE: The 13-year-old boy who went missing on Friday has been reunited with his parents.

Aminiasi Tiritabuanira Shaw, a student of the Singapore American School (SAS), was found on Sunday night.

The school had earlier said that it's believed the boy had left on his own accord after a disagreement with his parents.

In its update on Monday, the school said: "The Shaw family would like to extend their sincere gratitude to the many, many people from the SAS community, the larger Singapore community, and other organizations, schools and groups, who have tirelessly supported the search efforts for Tiri over the past couple of days.

"Please help pass the word that Tiri has been found and is safely in the arms of his family."

- CNA/ir

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Almost famous: See celebs' early roles

By Henry Hanks, CNN

updated 5:05 PM EST, Thu February 7, 2013

Stars who started out like GoDaddy's geek

Jesse Heiman

Sylvester Stallone

John Travolta

Keanu Reeves

Courtney Cox

Matt LeBlanc

Tina Fey

Rainn Wilson

Megan Fox

Dean Winters

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Clive Davis Gala goes on year after Houston's death

A year after Whitney Houston's death, music executive Clive Davis remembered her in words -- and video.

Houston died last year at the age of 48 just hours before the annual Clive Davis Gala was set to start. On Saturday, Davis said his world continues "to be so shattered by her passing" and that Houston's death still feels "unreal."

At the gala, Davis played what he called a rare performance of Houston belting "All The Man That I Need" at the Beverly Hilton Hotel.

Houston's brother and sister-in-law, Gary and Pat Houston, attended the gala, where Davis thanked them "for being here tonight." He also called Houston the "greatest, greatest singer of our lifetime."

58 Photos

Grammy Awards 2013: Pre-parties

Dutch electronic artist Afrojack kicked off the performances with a DJ set, but it was Gladys Knight who got the crowd up out of their seats with a closing number featuring renditions of "Neither One of Us" and "Midnight Train to Georgia."

Usher, too, brought R&B flavor to the stage when he performed some of "Burn" and "Climax," which featured the acoustic guitar.

The pre-Grammy event also featured performances by Patti Smith, Scottish singer Emeli Sande, best new artist nominees the Lumineers, song of the year nominee Miguel, and Jennifer Hudson, who paid tribute to Knight and performed with the singing veteran.

The event was full of A-listers there to enjoy the live music: Johnny Depp, Quincy Jones, Sting, Joni Mitchell, Diddy, Miley Cyrus, Frank Ocean, Dave Grohl, Magic Johnson and San Francisco 49ers quarterback Colin Kaepernick were in attendance as well as Ne-Yo, Carly Rae Jepsen, Brandy, David Guetta, Babyface, Wiz Khalifa, Jordin Sparks, Tyra Banks and dozens of others.

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$1M Reward for Capture of Fugitive Ex-Cop Dorner

A $1 million reward was offered today for information leading to the arrest of Christopher Dorner, as authorities in Big Bear, Calif., scaled back their search for the disgruntled ex-cop, who is suspected in three revenge killings.

"This is the largest local reward ever offered, to our knowledge," Los Angeles Police Chief Charlie Beck said at a news conference today. "This is an act of domestic terrorism. This is a man who has targeted those that we entrust to protect the public. His actions cannot go unanswered."

The money for the reward was pooled by businesses, government, local law enforcement leaders and individual donors, Beck said.

PHOTOS: Former LAPD Officer Suspected in Shootings

The reward comes on the fourth day of a manhunt for Dorner, who has left Southern California on edge after he allegedly went on a killing spree last week to avenge his firing from the police force. Dorner outlined his grievances in a 6,000 word so-called "manifesto" and said he will keep killing until the truth is known about his case.

Dorner's threats have prompted the LAPD to provide more than 50 law enforcement families with security and surveillance detail, Beck said.

Authorities are chasing leads, however they declined to say where in order to not impede the investigation.

Dorner's burned-out truck was found Thursday near Big Bear Lake, a popular skiing destination located 80 miles northeast of Los Angeles.

Irvine Police Department/AP Photo

Manhunt for Alleged Cop Killer Heads to California Mountains Watch Video

Christopher Dorner Search: Officials Search for Ex-officer in the Mountains Watch Video

Hundreds of Officers on Hunt for Alleged Cop Killer Watch Video

Investigators found two AR-15 assault rifles in the burned-out truck Dorner abandoned, sources told ABC News.

The truck had a broken axle, which may be the reason he decided to set fire to it, the police sources said.

Full Coverage: Christopher Jordan Dorner

Officers have spent the past couple of days going door-to-door and searching vacant cabins. The manhunt was scaled back to 25 officers and one helicopter in the resort town today, according to the San Bernadino Sheriff's Office.

On Saturday, Beck announced he would reopen the investigation into Dorner's firing but said the decision was not made to "appease" the fugitive ex-cop.

"I feel we need to also publicly address Dorner's allegations regarding his termination of employment, and to do so I have directed our Professionals Standards Bureau and my Special Assistant for Constitutional Policing to completely review the Dorner complaint of 2007; To include a re-examination of all evidence and a re-interview of witnesses," Beck said. "We will also investigate any allegations made in his manifesto which were not included in his original complaint."

Dorner is suspected of killing Monica Quan and her fiancé Keith Lawrence last Sunday in their car in the parking lot of their Irvine, Calif., condominium complex. Both were struck with multiple gunshot wounds.

Quan's father, Randall Quan, was a retired captain with the LAPD and attorney who represented Dorner before a police review board that led to Dorner's dismissal from the force in 2008.

On Wednesday, after Dorner was identified as a suspect in the double murder, police believe he ambushed two Riverside police officers, killing one and wounding the other.

The next day, Randall Quan reported he received a taunting call from a man claiming to be Dorner who told him that he "should have done a better job of protecting his daughter," according to court documents documents.

Anyone with information leading to the arrest of Christopher Dorner is asked to call the LAPD task force at 213-486-6860.

ABC News' Dean Schabner, Jack Date, Pierre Thomas, Jason Ryan and Clayton Sandell contributed to this report.

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