Moth navigation probed to improve micro-drone flight

It turns out moths are far better at video games than we might have thought. When navigating through a virtual forest, hawkmoths determine their route ahead of time depending on how much of the forest they can see. Mimicking their strategy might help us improve the flying ability of the micro-drones now being built.

Moths certainly see the world differently from humans as they zip along at 25 wingbeats per second. To figure out how they use landmarks to aid their navigation, Yonatan Munk of the University of Washington in Seattle created a virtual forest containing various amounts of "fog" that obscured the virtual trees. He then tied a hawkmoth (Manduca sexta) to an input device in front of the screen. This device detected when the moth was turning and caused the visualisation to respond accordingly.

"I'm essentially giving the moth a joystick," Munk said at the Society for Integrative and Comparative Biology meeting in San Francisco, where he presented the research last week.

The simple animation (see video) tricked the moth into navigating through the trees it saw. Similar techniques have been used to fool fruit flies, mice and fish. When the insect thought it was about to crash into a tree, it would often flail its legs as though trying to land or slow down.

Munk and his colleagues set up three virtual environmental scenarios to see whether moths always navigate through trees in the same way. Surprisingly, they found that the moths changed their strategy depending on visibility conditions.

If virtual "fog" rendered visibility so poor that the moth had just quarter of a second to respond to approaching obstacles, it would fly in wide circles until it found a tree, which it then used as a reference point.

Next, the researchers lifted the virtual fog slightly, giving the moth about 2 seconds to respond to obstacles. Now, if trees loomed to the left or right, the moths veered sharply towards them.

Information filter

Finally, with no fog at all, the moth could see trees even a virtual kilometre away. Now there was no longer a correlation between the moth's left and right turns and the total number of trees visible to its left or right, says Munk. However, there was a correlation between its turns and the number and position of nearby trees – in other words, moths ignored visible distant trees when navigating in very clear conditions.

It's interesting that the moths appear to plan their strategy ahead of time depending on how much of their environment they can see, says Mark Willis of Case Western University in Cleveland, Ohio. "We're used to thinking of insects as little stimulus-response machines."

By controlling what an insect encounters in a virtual reality world, researchers can tease apart how the creatures integrate different sensory inputs while navigating, says Willis. This information is important if we are to design effective flight navigation algorithms for micro-drones similar in size to the moths. "We're starting to understand what's going on in those beady little bug brains," Willis says.

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Football: 'Guardiola to City' talk did not faze Mancini

MANCHESTER, United Kingdom: Roberto Mancini on Friday said that he was never concerned about the prospect of Pep Guardiola taking his job at Manchester City, despite speculation before the Spaniard joined Bayern Munich.

Guardiola, the former Barcelona coach, was said to be lined up for a move to Eastlands should Mancini fail to deliver a trophy this year, despite leading the club to the English Premier League title last term.

The arrival at City of former Barca directors Ferran Soriano and Txiki Begiristain as chief executive and director of football only fuelled the rumours that the champions were building a backroom team for Guardiola.

But Guardiola is now set to take over at the German giants from next season, after signing a three-year contract earlier this week.

"I think that after one year out of work he decided to go to an important team," he told a news conference. "Bayern Munich is one of the world's top clubs because of its history. He decided this because it was the best solution for him.

"I did not have any problems about (the speculation of a move to City)," he added. "I understand the newspapers write that every day every manager wants to come here because it's a good place. But I think we work very well here.

"I have a five-year contract," he said, adding that he did not think it was likely that that he would be replaced in the meantime.

Mancini, whose side are currently seven points behind league leaders and local rivals Manchester United, said that although he wants to add to his squad, he may only be able to sign young players instead of big names in the transfer window.

"I think in January it is difficult to take good players because there is not one club who can sell good players," he explained.

"Maybe we can find some young players if we get a chance. In the last 12 days we probably can do something but I am not sure."

Mancini also welcomed a move to rescind a red card handed to City defender Vincent Kompany for a challenge on Jack Wilshere in last weekend's win over Arsenal, allowing him to escape a three-match ban.

"I am very pleased because I think it (the decision) is correct," said the manager. "I think the referee managed the game very well but in that situation he did not get to see well. After, I think he did very well.

"I don't think that tackle was a red card. Sometimes it's not."

Mancini meanwhile revealed that Sergio Aguero will return to action in City's home game against Fulham on Saturday, as the Argentina international has completed his recovery from a hamstring injury.

Aguero has not played since City beat Stoke on New Year's Day.

Mancini said he was relieved City appear to have overcome several recent injury problems, with the manager blaming the Premier League's hectic schedule for the club's fitness problems.

"We don't have time to recover, this is the reason," he added. "If every player play every two days for one year then they go and play international football there is no time to recover."

- AFP/de

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RIM launches final BlackBerry 10 'Portathon' event

BlackBerry App World.

(Credit:
Screenshot by Dara Kerr/CNET)

Research In Motion will hold its final BlackBerry 10 "Portathon" event this weekend.

Starting today at 9 a.m. PT, the company will allow developers to port their applications available on other mobile platforms to BlackBerry 10. Each approved app will net the developers $100, up to a maximum of 20 applications. To sweeten the pot a bit, RIM will enter all developers who submit five or more apps into a drawing that could see them win a free BlackBerry 10 Dev Alpha device.

RIM has been running Portathon events nearly every week for the last several weeks in an attempt to get as many mobile developers as possible to bring their products to the operating system. Last week, Alec Saunders, RIM vice president of developer relations, tweeted that the company netted 15,000 app submissions for BlackBerry 10 in a period of 37.5 hours. As with this weekend's event, that Portathon paid developers $100 per app.

RIM has made no secret of its belief that BlackBerry 10 is the future for the company, and if the operating system fails, so too could RIM. The company is expected to hold a major event on January 30 to unveil the long-awaited operating system. CNET will, of course, be there to cover every last detail.

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First Human Contact With Large Emperor Penguin Colony

One of the largest emperor penguin colonies in Antarctica was discovered last month by a team from the International Polar Foundation's Princess Elisabeth station.

The penguin colony had previously been identified through satellite imagery by researchers from the British Antarctic Survey. The penguins themselves didn't show up very clearly, but their excrement stains on the ice did.

Expedition leader Alain Hubert, who has spent seven seasons in Antarctica, long suspected a colony existed somewhere along the vast coast near Princess Elisabeth station. "When you go on the coast," explained the Belgian explorer, "after ten minutes, penguins come out of the water to look at who you are and what you are doing."

The satellite images gave Hubert and his team a rough idea of where to start looking. When ice research brought them within 37 miles (60 kilometers) of the probable location, they hopped on their snowmobiles for a side trip. The team traversed steep crevasses from the continent's cliffs down to the ice shelf, which has been shifting 650 feet (200 meters) toward the sea each year. "We were lucky to find it," said Hubert.

They finally came upon the colony at midnight in early December, when the sun was still shining during the Antarctic summer. Spread out on the ice were 9,000 emperor penguins, about three-quarters of them chicks. Despite his polar experience, Hubert had never seen a full colony before. "You can approach them," he said. "When you talk to them, it's like they are listening to you."

Researchers hope penguins will tell them—through population numbers and colony locations—how they are faring with climate change. Emperor penguins breed on the sea ice. If the ice breaks up early, before the chicks can fend for themselves, the chicks die and the future of the colony is imperiled.

Hubert has high hopes for his newly met neighbors because they located their nursery on top of an underwater rift, where the sea ice is less likely to melt. "They are quite clever, these animals."

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Manti Te'o's Fake Girlfriend May Have Duped Others

Notre Dame star linebacker Manti Te'o's fake girlfriend "Lennay Kekua" may have hoaxed other unsuspecting suitors.

"Catfish" movie director and actor Ariel Schulman told "Good Morning America" today that he believes there may have been "a few other people duped by the fake Lennay character."

Schulman and his brother Nev Schulman have been looking into the elaborate scam and claim to be corresponding with various players involved. They have come to believe that there were "a lot of other people that she was corresponding with before and maybe even during her relationship [with Te'o]."

Nev Schulman was the subject of the 2010 movie "Catfish," which spawned the TV series, because he himself was sucked in by an Internet pretender -- or a "catfish" -- who built an elaborate fake life.

As questions mount about Te'o's possible role in the complex scam, the number one question is whether Te'o was unknowingly ensnared, as he says, or whether he was complicit in the scam.

"I stand by the guy. My heart goes out to him," Ariel Schulman said. His brother has reached out to Te'o, but has not heard back.

"He had his heart broken," Schulman said. "He was grieving for someone, whether she existed or not. Those were real feelings."

Streeter Lecka/Getty Images

Manti Te'o Hoax: Was He Duped or Did He Know? Watch Video

Manti Te'o Hoax: Notre Dame Star Allegedly Scammed Watch Video

Tale of Notre Dame Football Star's Girlfriend and Her Death an Alleged Hoax Watch Video

Click here for a who's who in the Manti Te'o case

Te'o has kept a low-profile since the news of the scandal broke. He released a statement calling the situation "incredibly embarrassing" and maintaining that he was a victim of the hoax.

He was captured briefly by news cameras on Thursday at a Florida training facility, but has not spoken publicly.

As for the woman whose photo was used as the face of Lennay Kekua, "Inside Edition" has identified her as Diane O'Meara who is very much alive. The show caught up with her on Thursday, but she declined to comment.

ABC News' legal analyst Dan Abrams said that O'Meara may be the one person in the scandal with the power to sue since her likeness was taken and used without her permission.

As for Te'o, even if he knew about the deception, it appears that he did not do anything illegal.

"He's allowed to lie to the public. He's allowed to lie to the media. He's not allowed to lie to the authorities," Abrams said on "Good Morning America."

Questions also remain about the timeline of events and when Te'o discovered that the "love of his life," as he called her, was nothing more than a fake Internet persona.

According to Notre Dame's timeline of events, Te'o learned his girlfriend didn't exist on Dec. 6.

But in a Dec. 8 interview with South Bend, Ind., TV station WSBT, Te'o said, "I really got hit with cancer. I lost both my grandparents an my girlfriend to cancer." And on Dec. 11, he talked about his girlfriend in a newspaper interview.

Te'o alerted Notre Dame on Dec. 26 about the scam, the university said.

Click here for more scandalous public confessions.

Skeptics have also cited comments by Te'o's father Brian Te'o who told a newspaper how Kekua used to visit his son in Hawaii.

Notre Dame athletic director Jack Swarbrick said the university launched their own investigation.

"Our investigators, through their work, were able to discover online chatter between the perpetrators," Swarbrick said at a Wednesday news conference. "That was sort of the ultimate proof."

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Obama to scientists: tell us how to curb gun violence

With a stroke of his pen, President Barack Obama yesterday ended a de facto freeze on US government research into gun violence as a public health problem – in place since the mid-1990s.

"We don't benefit from ignorance," Obama said, directing the Centers for Disease Control and Prevention (CDC) in Atlanta, Georgia, to assess existing strategies to reduce gun violence and identify pressing questions that should be answered.

The executive order is one of 23 Obama signed as part of measures drawn up in response to the horrific killing last month of 20 children and six adults at Sandy Hook Elementary School in Newtown, Connecticut.

Obama also wants the US Congress to release $10 million for new research, including investigating whether playing violent video games and being exposed to other violent media makes people more likely to commit gun crimes.

With gun violence claiming some 11,000 lives in the US each year, you might imagine that reducing this toll would be near the top of the public health agenda.

For a while, in the early 1990s, it was – with CDC-backed research finding, for instance, that people with guns in the home were more likely to become victims of homicide.

Budget cut

But in 1996, after lobbying by the National Rifle Association, Congress passed language preventing the CDC from using its funds to "advocate or promote gun control". Simultaneously, it slashed $2.6 million from the agency's budget – precisely the CDC's annual funding for gun violence research.

Fearing further cuts, CDC officials have since steered away from investigating the consequences of gun ownership. "It's incredible that the CDC has been so hampered in doing research on this terrible public health issue," says David Hemenway, director of the Harvard Injury Control Research Center.

Noting that "research on gun violence is not advocacy", Obama's order stresses that the CDC is not prohibited from following his directions. It also specifies one initial priority: getting Congress to provide $20 million to expand coverage of the CDC's National Violent Death Reporting System from 18 states to the entire nation.

The NVDRS collects data on the circumstances of homicides from police, coroners' reports and other sources. It could be used to help investigate whether gun control laws are having the desired effect, but its patchy coverage means that many actions taken at the state level cannot easily be studied.

No lack of questions

Gun violence researchers have no shortage of questions that the CDC could now investigate. Garen Wintemute, who heads the Violence Prevention Research Program at the University of California, Davis, wants to examine the value of California's efforts to recover firearms from people who bought them legally, but subsequently became ineligible to own a gun because they were convicted of a serious crime.

"We need to know whether that intervention – which is expensive and potentially risky – actually works," Wintemute says.

Another important question is over the degree of risk posed by people with a history of alcohol abuse owning guns. That could be studied if the CDC restored questions about gun ownership to its Behavioral Risk Factor Surveillance System, the main survey used by the agency to investigate how risky behaviours may lead to disease, injury and death. These were removed after Congress pressured the CDC to abandon gun research.

While the CDC should now be able to study gun violence once again, its budget must be approved by Congress, which is why Obama is also requesting $10 million in new funding, in addition to the $20 million for the NVDRS. The new research, the White House plan says, should include "investigating the relationship between video games, media images, and violence".

It is well established that playing violent video games causes a short-term rise in aggression – measured, for example, by testing volunteers' willingness to subject others to unpleasant blasts of sound.

Definitive answer

What is unclear is whether prolonged exposure to violent games translates into an increased risk of real-world violence. Getting a definitive answer would mean following the behaviour of thousands of children into adulthood so that any link between gaming and violent crime can be identified, says Craig Anderson, who heads the Center for the Study of Violence at Iowa State University in Ames.

Given the gun lobby's powerful influence in Congress, it is unclear whether gun studies will earn the CDC additional funds, or whether they will have to compete with existing priorities.

Obama's main proposals on gun control similarly hang in the balance, requiring congressional approval. The president wants Congress to impose bans on assault weapons and large-capacity ammunition magazines, and to close a loophole that allows individuals to sell guns privately without background checks on the buyer.

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: Rodgers slams Suarez over diving admission

LONDON: Liverpool manager Brendan Rodgers on Thursday said that his controversial striker Luis Suarez could face punishment from the club after admitting that he dived to try to win a penalty in a league game with Stoke City.

In an interview with Fox Sports Argentina, Suarez admitted "falling" during October's 0-0 draw between the clubs at Anfield, prompting Rodgers, who had defended him from criticism at the time, to hit out.

"I think it is wrong. It is unacceptable. I have spoken to Luis and it will be dealt with internally," said Rodgers. "(Diving) is not something we advocate. Our ethics are correct."

Rodgers spoke to Suarez on Thursday and said he had been "totally understanding on where I am coming from as manager of the club.

"What was said was wrong. He takes that and we move on," he added.

Suarez hit the headlines for a theatrical fall in the Stoke game after he went to ground under a challenge from Marc Wilson in an unsuccessful attempt to win a second-half penalty.

FIFA vice-president Jim Boyce was moved to describe Suarez's tumble as "cheating", adding that the tendency for players to easily fall to the ground was a "cancer" in the game.

Suarez has been accused of diving at regular intervals during his time in England and he admitted in the interview that he had gone down on purpose.

"I was criticised for trying to win a penalty by falling in a match against Stoke," said the Uruguay international. "It's true I fell because we were drawing against Stoke at home and we needed to do something.

"But afterwards, the coaches of Stoke, Everton, all of them, came forward. I came to realise that the name of Suarez was a (newspaper) seller."

Suarez sparked controversy again earlier this month when he handled the ball prior to scoring Liverpool's winning goal in their 2-1 victory at non-league Mansfield Town in the FA Cup.

"The other day, a ball hit my hand without me meaning it to," he said. "I kissed my wrist (in celebration) and everyone started rounding on me."

Suarez also claimed that foreign players are treated differently to home-grown players in the Premier League.

"It's difficult," he said. "It's what Carlitos (Tevez) said, it's what Kun (Sergio Aguero) said: foreigners, and especially the South Americans, are treated differently to local players."

Suarez added that his run-in with Manchester United defender Patrice Evra, which saw him hit with a 40,000 fine pounds and an eight-match ban for racial abuse, was long forgotten.

"When people come and insult me, saying I'm South American, I don't start crying. It's something that stays on the pitch, part of football. My conscience is clear," he said, before claiming that Manchester United control the British press.

"They've got a lot of power and they'll always help them."

- AFP/fa

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Microsoft challenges poor grade for Security Essentials

Microsoft isn't too happy with the results of a recent test that found fault with its antivirus software.

For the second time in a row, the company's Security Essentials failed to win certification from AV-Test, a German-based testing lab that evaluates the efficacy of antivirus products. Out of 25 programs tested, only three failed to gain AV-Test's thumb's up for certification.

Microsoft's Forefront Endpoint Protection, which is geared toward corporate customers, also failed to gain certification.

Microsoft responded to the test via a blog posted yesterday, challenging its findings.

"Our review showed that 0.0033 percent of our Microsoft Security Essentials and Microsoft Forefront Endpoint Protection customers were impacted by malware samples not detected during the test," Joe Blackbird, program manager for Microsoft's Malware Protection Center, said. "In addition, 94 percent of the malware samples not detected during the test didn't impact our customers."

Blackbird cited three different examples in which he believes AV-Test missed the mark.

AV-Test reports on samples hit/missed by category. We report (and prioritize our work) based on customer impact.

AV-Test's test results indicate that our products detected 72 percent of all "0-day malware" using a sample size of 100 pieces of malware. We know from telemetry from hundreds of millions of systems around the world that 99.997 percent of our customers hit with any 0-day did not encounter the malware samples tested in this test.

AV-Test's test results indicate that our products missed 9 percent of "recent malware" using a sample size of 216,000 pieces of malware. We know from telemetry that 94 percent of these missed malware samples were never encountered by any of our customers.

Microsoft cut AV-Test a bit of slack by saying it's difficult for such independent groups to devise tests that can mimic the real-world conditions of virus attacks. At a security conference last year, AV-Test itself admitted to certain flaws in the methods used by current independent tests. But it still stood behind its own approach.

Security Essentials has been on a bumpy ride with AV-Test as of late.

In 2009, Microsoft's initial version of the software scored well in the group's testing. But more recent tests conducted last Winter and last Fall found the product much less effective.

CNET contacted AV-Test for comment and will update the story if the group responds.

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6 Ways Climate Change Will Affect You

Photograph by AP Photo/Marcio Jose Sanchez

The planet keeps getting hotter, new data showed this week. Especially in America, where 2012 was the warmest year ever recorded, by far. Every few years, the U.S. federal government engages hundreds of experts to assess the impacts of climate change, now and in the future.

From agriculture (pictured) to infrastructure to how humans consume energy, the National Climate Assessment Development Advisory Committee spotlights how a warming world may bring widespread disruption.

Farmers will see declines in some crops, while others will reap increased yields.

Won't more atmospheric carbon mean longer growing seasons? Not quite. Over the next several decades, the yield of virtually every crop in California's fertile Central Valley, from corn to wheat to rice and cotton, will drop by up to 30 percent, researchers expect. (Read about "The Carbon Bathtub" in National Geographic magazine.)

Lackluster pollination, driven by declines in bees due partly to the changing climate, is one reason. Government scientists also expect the warmer climate to shorten the length of the frosting season necessary for many crops to grow in the spring.

Aside from yields, climate change will also affect food processing, storage, and transportation—industries that require an increasing amount of expensive water and energy as global demand rises—leading to higher food prices.

—Daniel Stone

Published January 16, 2013

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Manti Te'o Hoax Exposes 'Catfish' Internet Scams

Notre Dame Athletic Director Jack Swarbrick cited the documentary "Catfish" in trying to explain how he said
star linebacker Manti Te'o became the victim of an elaborate hoax that duped him into believing that his online girlfriend died during the 2012 college football season.

"I would refer all of you, if you're not already familiar with it, with both the documentary called 'Catfish,' the MTV show which is a derivative of that documentary, and the sort of associated things you'll find online and otherwise about catfish, or catfishing," Swarbrick told reporters Wednesday.

The 2010 blockbuster film stars Nev Schulman, who was the real-life victim of a "catfish" scam. Schulman wanted to make the documentary to show how he was sucked in by an Internet pretender -- or a "catfish" -- who built an elaborate fake life.

Schulman made the documentary as he was falling for someone named "Megan," a gorgeous 20-something from Michigan. Their online relationship blossomed until Schulman confronted "Megan."

"Megan" turned out to be a middle-aged mom of two named Angela Wesselman, who later said she had been diagnosed with schizophrenia.

Mike Ehrmann/Getty Images

Manti Te'o Hoax: Notre Dame Star Allegedly Scammed Watch Video

'Catfish' Star Nev Schulman's Red Flags for Spotting Online Fakers Watch Video

Tale of Notre Dame Football Star's Girlfriend and Her Death an Alleged Hoax Watch Video

Inside 'Catfish': A Tale of Twisted Cyber-Romance

"It was different. It was something new. It was a little mysterious," Schulman told ABC News in an earlier interview, describing his reaction before he discovered Megan's true identity.

Now, a much wiser Schulman is helping others catch the "catfish" in his new hit series on MTV inspired by the real-life documentary, "Catfish: The TV Show."

'Catfish' Stars Nev Schulman's Advice for Online Dating

In one episode, Schulman meets Sunny, who says she has been dating a medical student online named "Jameson" for eight months.

"He's going to be an anesthesiologist. He does online classes," Sunny says of "Jameson" in the episode.

Schulman convinces Sunny to take a road trip to meet "Jameson" face to face and and Sunny later finds out "Jameson" was really a woman who was pretending to be a man online for at least four years.

"I mean who does that," Sunny said in the episode.

For Te'o, 21, the scam was allegedly worse. The Hawaiian said during the season that his girlfriend, Lennay Kekua, died of leukemia in September on the same day Te'o's grandmother died, triggering an outpouring of support for Te'o at Notre Dame and in the media.

"If the person you're talking to has a series of family incidents, this is something to watch out for," Schulman said.

As more become connected through various social media outlets, Schulman says these "catfish" hoaxes will continue.

"So long as we're not looking people in the eye face-to-face, there's always going be room, a lot of room for deception," he said.

WATCH: Deadspin Writer Who Uncovered Hoax Explains the Story

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