Tiny tug of war in cells underpins life









































TUG of war could well be the oldest game in the world. Cells use it for division, and now researchers have measured the forces involved when an amoeba plays the game.












Hirokazu Tanimoto and Masaki Sano at the University of Tokyo, Japan, studied what happens during the division of Dictyostelium - a slime mould that has barely changed through eons of evolution. The amoeba uses tiny projections or "feet" to gain traction on a surface.












The pair placed the amoeba on a flexible surface embedded with fluorescent beads. They used traction force microscopy to measure how the organism deformed the pattern of beads: the greater the deformation, the greater the force.












Dictyostelium normally exerts a force of about 10 nanonewtons when it moves, but the pair found this roughly doubles during division. That's because the cell uses its feet to pull itself in opposite directions, as if playing tug of war with itself.












The forces involved are about 100 billion times smaller than those used in the human form of the game, Tanimoto says (Physical Review Letters, in press).


















































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Slovenia's former premier Pahor elected president






LJUBLJANA: Slovenia's centre-left former prime minister Borut Pahor became the country's fourth president on Sunday, scoring a comfortable second-round victory despite his support for the government's unpopular austerity measures.

With 99.99 per cent of ballots counted, Pahor had 67.44 per cent of the votes, ahead of the incumbent Danilo Turk with 32.56 per cent, the central electoral commission said.

49-year-old Pahor, who was backed by the centre-left opposition Social Democrats (SD), also received the votes of the centre-right ruling parties in the second round.

He appeared to have won voters over with a populist US-style campaign -- and by admitting that some of his decisions as prime minister had been wrong.

Pahor was ousted as premier by a no-confidence vote in 2011, but during his presidential campaign, he capitalised on his image as a good-looking, relaxed, people's politician.

"This victory is only the beginning of a new hope, a new time," Pahor said after exit polls earlier on Sunday gave him victory. He was "overwhelmed" by the support he had received, he said.

Earlier, he had told reporters: "If I succeed, that result will send a strong message to Slovenian politicians that collaboration and unity are needed to overcome the (economic) difficulties."

Voter turnout in the second round however was 41.95 per cent, the lowest ever at a presidential election since Slovenia declared independence in 1991.

Pahor became the favourite to take over the largely ceremonial presidential post after a surprise win in the first round on November 11, when he pushed Turk into second place.

Unlike Turk, he had defended the austerity measures introduced by Prime Minister Janez Jansa's centre-right government, arguing that there was no other option.

The belt-tightening is aimed at cutting the public deficit this year to 3.5 per cent of GDP.

The cuts, including to public sector wages and welfare benefits, have brought thousands of protesters out into the streets in recent weeks.

The prime minister was among the first to congratulate Pahor on his win.

"During the campaign debates, he said things that were not popular but had to be said, and despite that he received such support," Jansa told journalists on Sunday.

Earlier, Jansa's ruling Slovenian Democratic Party (SDS) tweeted: "This evening is marked by hopes that the new president will bring more collaboration."

At a debate last week, Pahor had called for more cooperation with the government, adding: "We should not lose any more time speculating about possible alternatives (to austerity)."

Slovenia, once seen as a star new member of the European Union, is suffering one of the deepest recessions in the eurozone. The problems with its banks have raised fears it may need a bailout.

The European Commission has predicted the country's output will shrink 2.3 per cent this year and 1.6 per cent in 2013.

Turk had hoped to capitalise on the wave of protests against austerity measures.

"This government has been unsuccessful, it is arrogant, and it should make big changes," Turk said as he voted Sunday, urging it to "listen to protesters."

On Sunday evening however, he admitted defeat in a speech to supporters. Clearly disappointed, he regretted the low turnout.

"I failed to convince more citizens to cast their votes and to give me their support," he said.

Turk, long a thorn in the side of the government, ran as an independent candidate, but with backing from the largest centre-left opposition party, Positive Slovenija (PS).

Although Slovenia's president has little power, analysts say the prime minister will benefit from collaborating with the head of state.

This could be particularly important if the opposition and unions succeed in calling referendums to try to block new reforms.

Those reforms include a controversial IMF-backed plan to create a "bad bank", a financial institution that would take over risky debt held by state-owned banks to restore trust in their balance sheets.

A week after the first-round vote, 30,000 people attended a rally in Ljubljana called by Slovenia's main unions to protest at austerity cuts, and several other demonstrations have followed.

On Friday, police in Ljubljana used tear gas and water cannon against demonstrators, detaining more than 30 people after violence erupted at the end of a largely peaceful rally.

Some 1.7 million were eligible to vote on Sunday.

- AFP/xq



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Facebook Powerball hoaxer is software engineer, report says



Is that a software engineer's beard?



(Credit:
Screenshot by Chris Matyszczyk/CNET)


You have probably barely slept for wondering what kind of sniveling snail would put their picture up on Facebook with a fake winning Powerball ticket.


Or you have probably barely slept for wondering what kind of saintly sort would ask people to share on Facebook his picture with a winning Powerball ticket and offer $1 million to a random sharer.


Either way, the excitement generated by Nolan Daniels has been heated and profound -- especially as more than 2 million people have now shared in the experience.


Now, it seems, we know which Nolan Daniels he is.


The Savannah Morning News, which first brought his tale to prominence, has now announced that this Nolan Daniels is Nolan Ryan Daniels, software engineer.


It says that this Nolan Ryan Daniels is the co-owner of N2 Technologies, based in Mesa, Ariz. This is a company that offers various software services to those in the medical industry.


His LinkedIn profile offers that he is a "Seasoned Computer Programmer and SQL Expert."


The Savannah Morning News says that it has spoken with his brother, Derek, who confirmed his identity and declared: "I think he craves the love from people."


Well, he certainly has enjoyed quite some love -- especially from people who would love it if he would give them quite some money.


Derek Daniels also teased: "He did this to make himself feel better."


Naturally, one has tried to contact this very Nolan Daniels in an attempt to ascertain his own perspective on both his jape and the impact it has enjoyed all over the world.



More Technically Incorrect



Thus far, he has maintained a stoic silence. Which might mean that "The Today Show" or another fine breakfast serial has secured his story.


I am sure there will be software engineers who will admire his sense of humor.


Though a few might feel it denigrates the sheer precision of their profession that he didn't present the numbers in ascending order -- which is normal for a Powerball ticket.


As of this writing, Daniels -- who was, indeed, reportedly named after pitcher Nolan Ryan -- continues to receive messages of goodwill.


Just a couple of hours ago, the improbably named Louan Lheureuxx posted to his Facebook page: "This is not luck! There is no such thing! It is Karma. This man probably really deserved this :) awesome!!!"


It will surely be, um, awesome if he becomes a nationally recognized figure, ready to fool the world again with his next artful dodge.


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Photos: Kilauea Lava Reaches the Sea









































































































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Chiefs: Jovan Didn't Have 'Long Concussion History'













The death of Kansas City Chiefs linebacker Jovan Belcher, the latest in a string of tragic NFL suicides, has left the player's teammates, coaches, family and friends wondering what could have led a man described as generous and caring to murder his girlfriend -- the mother of his 3-month-old daughter -- and then kill himself.


Kansas City police say Belcher, 25, shot and killed his girlfriend Saturday morning before going to the team stadium and and committing suicide by shooting himself in the head as he was talking to coaches.


"When the officers arrived, when they were pulling up, they actually observed a black male who had a gun to his head and he was talking to a couple of coaches out in the parking lot," Kansas City Police spokesman Darin Snapp told ABC News Radio. "As officers pulled up, and began to park, that's when they heard the gunshot and it appears the individual took his own life."


It's not yet clear what prompted Belcher's actions, but his suicide follows those of former NFL players Junior Seau, 43, and Dave Duerson, 50, both of whom died of self-inflicted gunshot wounds to the chest in the last two years.


The suicides of Seau, Duerson and a number of other NFL players have been blamed on concussions racked up from playing the violent sport, and a condition called chronic traumatic encephalopathy, or CTE, but that may not be the case for Belcher.








Kansas City Chiefs Player Jovan Belcher's Murder-Suicide Watch Video









Did Brain Injury Lead to NFL Star's Suicide? Watch Video







Chiefs chairman Clark Hunt said today that Belcher was "a player who had not had a long concussion history," even though he was a three-time all-America wrestler and a star on the football team at his West Babylon, N.Y., high school.


Seau's and Duerson's brains are both being studied at Boston University's Center for the Study of Traumatic Encephalopathy, where researchers have already learned that Duerson had CTE, which may have led to his suicide.


CTE is a progressive, degenerative disease found in people who have had brain trauma from repeated blows to the head, according to the Center. It includes brain tissue degeneration and a buildup of an abnormal protein called tao, resulting in symptoms including confusion, aggression, and depression. Ultimately, CTE results in dementia.


In 2006, former Pittsburgh Steelers player Terry Long killed himself by drinking antifreeze, and former Philadelphia Eagles player Andre Waters shot himself in the head. Both of them suffered from CTE.


Researchers at Boston University found evidence of CTE in 12 of the 13 professional football players' brains they received between 2008 and 2010, according to the university. CTE can also be found in hockey players, wrestlers, and boxers.


"Football is entertainment in which the audience is expected to delight in gladiatorial action that a growing portion of the audience knows may cause the players degenerative brain disease," ABC News' George Will wrote in a Washington Post column published Aug. 3 just before he appeared on "This Week with George Stephanopoulos."


Will cited Seau and Duerson in his column, both of whom committed suicide after 2010, adding that 62-year-old former NFL safety Ray Easterling committed suicide in April 2012. Esterling's autopsy revealed that he had dementia and depression brought on by CTE.





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Weaver ants help flowers get the best pollinator









































MOST flowers don't want pesky ants hanging around scaring away would-be pollinators. Not so the Singapore rhododendron - the first flower found to recruit ants to chase poor pollinators away.












Francisco Gonzálvez at EEZA, the arid zone experimental station in Almeria, Spain, and colleagues studied flowers frequented by large carpenter bees (Xylocopa) and a much smaller solitary bee, Nomia. The larger bees seemed to be better pollinators - setting far more fruit than the smaller bees.












The team found that Nomia avoided plants with weaver ant patrols, and when they did dare to land, were chased away or ambushed by the ants. Being so much bigger, carpenter bees weren't troubled by the ants (Journal of Ecology, DOI:10.1111/1365-2745.12006).












Plants usually produce chemical repellents to scare off insects that prey on their pollinators. But lab tests suggested Gonzálvez's flowers were actively attracting weaver ants, although how remains a mystery. The team thinks carpenter bees choose flowers with ants so they don't have to compete with Nomia.












Michael Kaspari of the University of Oklahoma in Norman says this is a new kind of plant-ant interaction, and that the team makes a "strong case" for the rhododendron manipulating the behaviour of weaver ants to ward off inefficient pollinators.


















































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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Football: Beckham's US adventure ends with victory






LOS ANGELES: The Los Angeles Galaxy rallied with three goals in the second half on Saturday to capture a second straight MLS Cup crown with a 3-1 win over Houston in David Beckham's farewell match in North America.

Robbie Keane, Omar Gonzalez and Landon Donovan scored goals for the heavily-favoured Galaxy who clinched their fourth MLS Cup title by beating the Dynamo for the second consecutive year.

Beckham's final game, which was played in intermittent rain, started out as a low-key farewell with no festivities before the game to honour the football icon.

But he walked off to massive cheers from the crowd of 30,000 at the Home Depot Center after the Galaxy, trailing 0-1 at the interval, came alive in the second half.

Republic of Ireland forward Keane appeared to have scored off a free kick from Beckham early in the second half but he was ruled offside.

Galaxy's Gonzalez made it 1-1 in the 60th minute with a header as he beat two Houston defenders in the air before floating the ball over goalkeeper Tally Hall.

Donovan gave the Galaxy their first lead five minutes later from the penalty spot.

The Galaxy were awarded the penalty after a handball by Houston's Ricardo Clark.

Keane capped the scoring with a goal off a penalty kick in injury time, firing a low shot into the net.

After Keane's goal, Beckham was taken out of the game to a massive ovation. He walked over to the sidelines and hugged coach Bruce Arena.

Beckham, credited with helping raise football's profile in the US sports landscape in his half-dozen seasons here, had not even received the biggest cheer when the Galaxy players were introduced.

That went to Galaxy captain Donovan, although those cheers quickly turned to groans as Donovan missed an open goal in the 13th minute from six yards out after taking a perfect pass from Keane.

Beckham set up the play with a long pass up the left side to wide open Keane.

Moments later Houston's Brad Davis went down at midfield after taking a knee to the head from Beckham.

Galaxy goalkeeper Josh Saunders was forced to make a couple of huge saves in the first half. In the 27th minute he just got a hand on a Kofi Sarkodie shot from in close to deflect it over the bar.

Houston's Calen Carr opened the scoring just before halftime with a nice run down the right side before slipping the ball between Saunders and the near post.

Carr used his speed to get open then outmuscled Galaxy defender Tommy Meyer to get off a hard shot to the top of the net that beat a falling Saunders.

- AFP/xq



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McAfee nabbed? His blog says maybe, following CNN interview



The bizarre real-life potboiler concerning on-the-lam antivirus-software pioneer John McAfee continued today, as -- following a cloak-and-dagger CNN interview with the fugitive -- McAfee's own blog posted an item saying he may have been captured at the Belize-Mexico border.


The item, pictured above and reported earlier by news agency AFP, says little more than that and calls the report of the capture "unconfirmed." We'll update this post -- or link to a new, separate story -- when we know more.



Earlier, CNN managed to track McAfee down for an on-camera interview somewhere in his longtime country of residence, Belize -- where he's in hiding after his neighbor was shot to death. A CNN article accompanying an online video of the interview says its reporter had to provide a secret password and partake in a secret-agent-like, twisting-and-turning
car ride to get to the antivirus-software pioneer.


In the brief interview, which you can check out here, McAfee says, "I will certainly not turn myself in, and I will certainly not quit fighting. I will not stop my blog." He says he'll either get arrested or get away and clarifies that "Get away doesn't mean leave the country. It means they will, No. 1, find the murderer of Mr. Faull and, No. 2, the people of this country -- who are by and large terrified to speak out -- start speaking out,"


McAfee has been on the run since his neighbor Gregory Faull was discovered dead on November 12. McAfee and Faull had reportedly had run-ins with each other over McAfee's dogs and armed security guards. In an interview with Wired that same day, McAfee said he thought the killers had actually been looking for him and not Faull.


Other aspects of the tale include the fact that the 67-year-old McAfee's home was raided in May and that police said they found multiple unlicensed firearms and McAfee with a 17-year-old girl. They also said he was manufacturing an antibiotic in his home without a license. McAfee's blog provides another unusual twist. Apparently begun about a week after Faull's murder, it includes entries from McAfee himself about his flight. In one such post, McAfee writes that he is traveling with a 20-year-old woman named Samantha, whom he credits with helping to keep him fed, clothed, and in hiding:



"She has also helped me evade detection by grabbing me and kissing me, in public, in a fashion that causes passerby's to feel embarrassment at the thought of staring and by creating emotional scenes that cause the curious to momentarily forget what they were looking for," he wrote. "She is acutely aware of her surroundings and is as street smart as a sober hobo."


Today's CNN report noted that police in Belize have said they don't consider McAfee a suspect in the killing; they want him only for questioning. The news agency also noted that McAfee maintains that his troubles began when he refused to bribe a government official and that he will be killed if he's arrested.


Again, the post on McAfee's whoismcafee.com/The Hinterland blog says the report of McAfee's capture is unconfirmed, so it remains to be seen if it turns out to be true. If nothing else, however, the post adds yet another chapter to this strangely unfolding tale.


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Photos: Kilauea Lava Reaches the Sea









































































































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Police: KC Chiefs Player Killed Girlfriend, Self













Jovan Belcher, a linebacker for the Kansas City Chiefs, committed suicide today in front of his coaches and police officers outside the team's stadium, shortly after he fatally shot his girlfriend, police said.


"We heard that they had been arguing in the past [and] as far as recently, they'd been arguing before the shooting occurred this morning," Kansas City Police spokesman Darin Snapp told ABC News Radio.


The victim was identified Kasandra Perkins, 22. Snapp said the couple had lived together and had a 3-month-old daughter.


A woman first alerted police this morning that her daughter had been shot by her boyfriend, who was a Kansas City Chiefs player, Snapp said. Police initially believed the woman was Perkins' mother, but later learned she was Belcher's mother, who lived with the couple to help care for their daughter and according to family members felt extremely close to Perkins.


It is believed Belcher drove to Arrowhead Stadium shortly after the shooting and police were called.


"When the officers arrived, when they were pulling up, they actually observed a black male who had a gun to his head and he was talking to a couple of coaches out in the parking lot," Snapp said. "As officers pulled up, and began to park, that's when they heard the gunshot and it appears the individual took his own life."












Idaho Teacher Accused of Locking Boy, 5, in Dark Closet Watch Video





Snapp said the coaches told officers they didn't feel they were in any danger from Belcher.


"They said the player was actually thanking them for everything they'd done for him," he said. "They were just talking to him and he was thanking them and everything. That's when he walked away and shot himself."


Kansas City is scheduled to host the Carolina Panthers on Sunday, and the league has told the Panthers to go ahead with their travel plans because the game will be played as scheduled.


In a statement posted on their website, the Chiefs said they are "cooperating with authorities in their investigation" and did not mention Belcher by name.


The 6-foot-2, 228-pound linebacker joined the Kansas City Chiefs in 2009, and had spent all four seasons of his career with the team. He has played every in game since joining the team.


Originally from West Babylon, N.Y., where he was a three-time all-America wrestler in addition to playing on the football team, Belcher went undrafted out of the University of Maine, where he started all 45 games in which he played.


Maine Head Football Coach Jack Cosgrove described Jovan as a "tremendous student-athlete."


"His move to the NFL was in keeping with his dreams," Cosgrove said in a statement released by the university today. "This is an indescribably horrible tragedy. At this difficult time, our thoughts and prayers are with Jovan, Kasandra and their families."


Belcher signed with the Chiefs as a rookie free agent, started 15 of 16 games his second season and last year started all 16 games as left inside linebacker.


Belcher expressed gratitude for his NFL career in an article posted on Nov. 21 on the Chiefs' website that has since been taken down.


"First and foremost, God. Family and friends just keeping me focused, coaches and just everyone," he said.



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