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.




















































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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Anti-whaling group takes battle to top US court






WASHINGTON: The Sea Shepherd conservation group asked the US Supreme Court on Monday to lift an order forcing it to steer clear of Japan's whalers, who are seeking legal reprisals over harassment at sea.

Since 2002, Sea Shepherd has annually disrupted Japan's contested hunt in the Southern Ocean but a US court issued an injunction on December 17 for the activists to stay at least 500 yards away from the whaling vessels.

Environmental lawyer Robert F. Kennedy Jr., the son and namesake of the slain political icon, urged the United States to show support for the Sea Shepherd Conservation Society and its fugitive founder Paul Watson.

"It's a mission that only they are capable of accomplishing and that is absolutely vital to the enforcement of international agreements on the high seas which otherwise go unenforced," Kennedy told reporters.

The International Whaling Commission has designated a whale sanctuary in the Southern Ocean. Japan kills whales in the area through a loophole in a 1986 moratorium on commercial whaling that allows lethal research.

Kennedy called Japan's government-supported Institute of Cetacean Research, which runs the whaling program and sued Sea Shepherd, "a pirate organisation masquerading as a scientific research group."

In a filing to the Supreme Court on Friday, Sea Shepherd and Watson said that the lower court "acted rashly" and voiced concern over the order's "extraordinarily long reach" to areas outside US jurisdiction.

The document said that the injunction marked "a potentially existential threat" to Sea Shepherd as more than 80 per cent of its funding comes from donations, which "may slow to a trickle" without the anti-whaling campaign.

The US Court of Appeals for the Ninth Circuit cited safety concerns when it issued the injunction, effective until a decision on the case.

The Institute of Cetacean Research hit back and was believed to have asked the judge to find Sea Shepherd in contempt of court -- which would potentially lead to punishment.

Sea Shepherd released a letter from a lawyer representing the institute, which complained that MV Brigitte Bardot, a former ocean racer named after the French actress and animal rights activist, violated the 500-yard injunction on January 29.

The letter warned of legal action unless Sea Shepherd ordered the Brigitte Bardot to comply with the injunction or returned it to port.

The Oregon-based group contended that it was observing the injunction, saying that the Brigitte Bardot sails under an Australian flag and is operated by Sea Shepherd's Australian sister organisation.

Japan's institute is "just like a bully who is finally challenged and runs to his mommy," said Scott West, the director of intelligence and investigation for US Sea Shepherd.

Sea Shepherd boasted that it has prevented Japan from killing whales this season. Japan, which makes no secret that meat from whaling ends up on dinner plates, accuses Western nations of disrespecting its cultural traditions.

Gavin Carter, a US-based spokesman for the Institute of Cetacean Research, called Sea Shepherd's Supreme Court filing an "unusual approach."

Watson, a dual US and Canadian citizen, has kept his whereabouts unknown since July, when he jumped bail in Germany, where he was arrested on charges from Costa Rica related to a confrontation over shark finning.

- AFP/jc



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Report details Osama bin Laden killer's 'nightmares'








By Jamie Gumbrecht, CNN


updated 7:06 PM EST, Mon February 11, 2013









STORY HIGHLIGHTS


  • Navy SEAL who shot Osama bin Laden has no military pension or health care, report says

  • Journalist Phil Bronstein profiles man he calls the Shooter in the March issue of Esquire

  • Bronstein: "He has nightmares about how he's going to support his family"




(CNN) -- He's the man who rolled into a bedroom in Abbottabad, Pakistan, raised his gun and shot Osama bin Laden three times in the forehead.


Nearly two years later, the SEAL Team Six member is a secret celebrity with nothing to show for the deed; no job, no pension, no recognition outside a small circle of colleagues.


Journalist Phil Bronstein profiled the man in the March issue of Esquire, calling him only the Shooter -- a husband, father and SEAL Team Six member who says he happened to pull the trigger on the notorious terrorist. It's a detailed account of how the raid unfolded, and what comes after for those involved. The headline splashed across the cover reads, "The man who killed Osama bin Laden ... is screwed."


In a statement the Navy responded: "We have no information to corroborate these new assertions. We take seriously the safety and security of our people, as well as our responsibility to assist sailors making a transition to civilian life. Without more information about this particular case, it would be difficult to determine the degree to which our transition programs succeeded."








"They spent, in the case of the shooter, 16 years doing exactly what they're trained to do, which is going out on these missions, deployment after deployment, killing people on a regular basis, " said Bronstein, executive chairman of the Center for Investigative Reporting. "They finally get to the point where they don't want to do that anymore."


Bronstein reported that the man left SEAL Team Six in September. His family's health care coverage ceased. Because he retired before the 20-year mark, he gets no pension.


The Shooter is judicious about the details of his story and hasn't been involved in dramatic books, movies or video games that will make millions for some. It's out of loyalty to his work and concern about his family's safety, Bronstein said. The shooter worries what could happen if his name went public, like Matt Bissonnette, the SEAL whose identity was revealed after he published the book "No Easy Day" using a pseudonym. CNN can't verify the account in Esquire, or the one in Bissonnette's book.


Bronstein reported that the Shooter was offered some witness protection, but no such program exists yet.


Home life is a struggle, too. The Shooter and his wife are separated, Bronstein wrote, although they live in the same house -- "on very friendly, even loving terms" -- to save money. He has done consulting work, Bronstein told CNN's Wolf Blitzer, but it's not clear how long it will last.


"They suddenly find themselves trying to translate into a civilian world that they're not used, and they haven't been used to for decades," Bronstein said. "I think he has nightmares about how he's going to support his family, and how he's going to feed his family."




Watch The Situation Room with Wolf Blitzer weekdays at 4pm to 6pm ET and Saturdays at 6pm ET. For the latest from The Situation Room click here.






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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


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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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Basketball: Balanced attack propels Clippers past Knicks






NEW YORK: The Los Angeles Clippers defeated the New York Knicks 102-88 with the help of a strong bench attack and Chris Paul's 25 points, seven assists and a half dozen rebounds.

Jamal Crawford had a team high 27 points and Blake Griffin finished with 17 points and 12 rebounds for the Clippers, who won despite 42 points from New York forward Carmelo Anthony at Madison Square Garden.

Los Angeles won for the second time in three National Basketball Association games as their reserves easily outscored New York's bench 48-15.

Anthony also had eight rebounds and Raymond Felton was the only other member of the Knicks to score in double figures, finishing with 20 points. The Knicks have lost two of their last three games.

The Clippers held a 71-70 edge heading into the fourth quarter.

Crawford and Eric Bledsoe combined for 13 points during a 19-5 run in the fourth to put the Clippers ahead 90-78 with five minutes to play.

The Knicks rebounded with an 8-2 push to get back within 92-86 but Los Angeles scored the next seven points to regain a 13-point lead with 1:11 left and cruised to the win.

It was Paul's second game back after missing nine straight with a bruised right kneecap.

The Pacific Division-leading Clippers are now 16-12 on the road and will close out their current road swing on Monday at Philadelphia.

- AFP/jc



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$1 million reward offered for ex-LAPD cop's capture






STORY HIGHLIGHTS


  • LAPD beefs up security at Grammy Awards as a precaution

  • NEW: Slain Riverside officer identified as 11-year veteran Michael Crain

  • Los Angeles puts up $1 million reward for Dorner's capture and conviction

  • Dorner claims LAPD racism cost him his job and declared war on the department




Los Angeles (CNN) -- The city of Los Angeles put up $1 million in reward money Sunday for help catching Christopher Dorner, the renegade ex-cop accused of killing three people in a vendetta against his old department.


"We will not tolerate anyone undermining the security, the tranquility of our neighborhoods and our communities," Los Angeles Mayor Antonio Villaraigosa told reporters. "We will not tolerate this reign of terror that has robbed us of the peace of mind that residents of Southern California deserve. We will not tolerate this murderer remaining at large."


The offer -- raised in conjunction with businesses, private donors and community groups -- is "the largest ever offered to our knowledge," Los Angeles Police Chief Charlie Beck said. The hope is it will shake loose a tip that leads to Dorner's eventual conviction.


The Los Angeles Police Department says Dorner, a 270-pound, 6-foot former Navy officer, was fired in 2009 for filing a false complaint of excessive force against his training officer. In an interview aired Sunday on CNN affiliate KCBS, Beck called Dorner a "trained assassin" but said he wouldn't be harmed if he gave himself up.









Ex-cop at center of California manhunt











HIDE CAPTION















"If you turn yourself in, then you will be safe and nobody else has to die," he said. "If you don't, if you decide to try to take the life of another Los Angeles police officer or their family member, then you'll have to suffer the consequences."


Amid the manhunt, the LAPD beefed up security at Sunday night's Grammy Awards show "out of an abundance of caution," police Cmdr. Andy Smith said. And Villaraigosa said authorities are confident they'll catch Dorner.


"This search is not a matter of if. It's a matter of when," Villaraigosa said. "And I want Christopher Dorner to know that."


Chief calls it 'domestic terrorism'


Dorner accused his training officer of kicking a mentally ill man during an arrest in 2007. The LAPD ruled the complaint unfounded and kicked Dorner off the force for filing a false complaint. He challenged his firing in court and lost.


In a manifesto released last week, he blamed racism and corruption in the department for his removal and vowed to wage "unconventional and asymmetrical warfare" against LAPD officers and their families. He called it a "last resort" to clear his name and strike back at a department he says mistreated him.


Beck had a different term for it Sunday.


"This is an act -- and make no mistake about it -- of domestic terrorism," he said. "This is a man who has targeted those that we entrust to protect the public. His actions cannot go unanswered."


But the chief announced Saturday that the LAPD would re-examine its proceedings against Dorner. The review is "not to appease a murderer," but "to reassure the public that their police department is transparent and fair in all things we do," he said.


"I am aware of the ghosts of the LAPD's past, and one of my biggest concerns is that they will be resurrected by Dorner's allegations of racism within the department," Beck said.


Mountain dragnet scaled back


Meanwhile, about 90 miles east of the city, the dragnet was back in action around the Big Bear Lake resort in the San Bernardino Mountains. After working through a weekend of heavy snow and overnight temperatures in the single digits, investigators were trying to pick up Dorner's trail anew after his burned-out truck was found there Thursday afternoon near the property of someone a federal arrest affidavit described as a known associate.


But there has been speculation, based in part on the affidavit, that the suspect could have crossed sate lines into Nevada or made his way into Mexico.


The day's effort began with about 60 officers, San Bernardino County sheriff's spokeswoman Lehua Pahia said. But by early afternoon, it had been scaled back to about 25 investigators, aided by a helicopter equipped with body-heat sensors and other specialized equipment, Pahia said. None of the tips the department had received so far has panned out, she said.


According to authorities, Dorner began making good on his threats a week ago when he killed Monica Quan and her fiance, Keith Lawrence, in a parking lot in Irvine, south of Los Angeles. Quan was the daughter of a now-retired Los Angeles police officer who represented Dorner in a disciplinary hearing that led to his termination.


Time line in hunt for Dorner








Days later, early Thursday morning, Dorner allegedly opened fire on two LAPD police officers, wounding one, in the suburban city of Corona.


Roughly 20 minutes later, Dorner allegedly fired on two police officers in the nearby city of Riverside, killing one and wounding another. On Sunday, authorities identified the slain officer as Michael Crain, an 11-year veteran officer.


LAPD guarding 50 police families


Authorities say Dorner spent at least two days in the San Diego area after the shooting of Quan and her fiance. Dorner's ID and some of his personal belongings were found Thursday at the San Ysidro Point of Entry at the U.S.-Mexico border, according to the affidavit.


Border patrol agents have been searching cars crossing into Mexico for signs of Dorner, while authorities have searched a home Dorner owned in Las Vegas and one owned by his mother in La Palma, California.


Two sailors reported that Dorner, a former Navy lieutenant, approached them at the San Diego-area Point Loma Naval Base, and local police allege he attempted to steal a boat.


And Monica Quan's father told investigators that someone identifying himself as Dorner called him Thursday and told him he "should have done a better job of protecting his daughter," the federal affidavit states. Investigators traced the call to Vancouver, Washington, but based on the timing of other sightings, they don't believe Dorner was in Vancouver at the time, the affidavit states.


Beck said the LAPD is now guarding the families of more than 50 police officers. Officers guarding one house early Thursday shot and wounded two women who were driving a pickup similar to Dorner's, something Beck called a "tragic, horrific incident."


Beck said that the shootings of Margie Carranza, 47, and her mother, Emma Hernandez, 71, occurred a day after the manhunt for Dorner began and that the officers were under enormous pressure.


CNN's AnneClaire Stapleton and Irving Last contributed to this report. Paul Vercammen and Stan Wilson reported from Big Bear Lake. Matt Smith wrote from Atlanta.






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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







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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