Today at New Scientist: 21 January 2013







Twitter reveals how Higgs gossip reached fever pitch

Anyone who fondly remembers the heady days of excitement preceding the Higgs boson announcement last year can now relive the experience



Vibrating navigator shows cyclists the way

A buzzing GPS-fuelled belt that tells cyclists when to turn might help them keep their eyes on the road and save lives



Call off the pregnancy police - women want the truth

Pregnant women can do without being made to feel guilty and burdened by wrong or contradictory advice. Just give them the facts, says Linda Geddes



Supernova-powered bow shock creates cosmic spectacle

The infrared vision of NASA's Spitzer Space Telescope shows how a massive speeding star is electrifying its surroundings



First video of squid sex reveals deep-sea Kama Sutra

Watch a pair of squid caught in the act for the first time in an unexpected sexual position



Let's be clear on health risks from radiation

Should Californians have had iodine after Fukushima? In Radiation Robert Peter Gale and Eric Lax clear up the confusion over radiation and health



Wind power delivers too much to ignore

Although aesthetic concerns need to be heard, qualms about wind's reliability are wide of the mark, argues an energy policy researcher



Quadruple DNA helix discovered in human cells

The classic double helix has been joined by a four-stranded version that may play a role in cancer



Turn up the bass to scare birds away from planes

Subwoofers that blast out sounds too low to be heard by humans can keep birds out of busy air space, and prevent them colliding with planes



Earth may be crashing through dark matter walls

If the universe is a patchwork quilt of exotic force fields, we should be able to detect dark matter whenever we cross between patches



Blinded by sun? Let your steering wheel guide you

A steering wheel that buzzes when drivers are dazzled by bright lights and drift from their lane could help curb accidents



NASA planet-hunter is injured and resting

The Kepler space telescope has put its search for alien Earths on hold while it recovers from a stressed reaction wheel



High-tech Dreamliner's wings clipped by battery trouble

Boeing's 787 Dreamliner is replete with cutting-edge technology. But problems with its complex systems now have the planes grounded around the world




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Bank of Japan boosts fiscal 2013 GDP growth forecast






TOKYO: The Bank of Japan on Tuesday lifted its growth forecast for the country's economy in the fiscal year starting in March, a glimmer of positive news as the country struggles to cement a recovery.

The BoJ said it now expected Japan's gross domestic product to expand by 2.3 percent in the year ended March 2014, up from an earlier 1.6 percent forecast.



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3D printer to carve out world's first full-sized building



A rendering of the "Landscape House" by architect Janjaap Ruijssenaars.



(Credit:
Universe Architecture)


Sure, we've heard of 3D-printed iPhone cases, dinosaur bones, and even a human fetus -- but something massive, like a building?

This is exactly what architect Janjaap Ruijssenaars has been working on. The Dutch native is planning to build what he calls a "Landscape House." This structure is two-stories and is laid out in a figure-eight shape. The idea is that this form can borrow from nature and also seamlessly fit into the outside world.

Ruijssenaars describes it on his Web site as "one surface folded in an endless mobius band," where "floors transform into ceilings, inside into outside."

The production of the building will be done on a 3D printer called the D-Shape, which was invented by Enrico Dini. The D-Shape uses a stereolithography printing process with sand and a binding agent -- letting builders create structures that are supposedly as strong as concrete.

According to the Los Angeles Times, the printer will lay down thousands of layers of sand to create 20 by 30-foot sections. These blocks will then be used to compile the building.

The "Landscape House" will be the first 3D-printed building and is estimated to cost between $5 million and $6 million, according to the BBC. Ruijssenaars plans to have it done sometime in 2014.

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Attack at Algeria Gas Plant Heralds New Risks for Energy Development



The siege by Islamic militants at a remote Sahara desert natural gas plant in Algeria this week signaled heightened dangers in the region for international oil companies, at a time when they have been expanding operations in Africa as one of the world's last energy frontiers. (See related story: "Pictures: Four New Offshore Drilling Frontiers.")


As BP, Norway's Statoil, Italy's Eni, and other companies evacuated personnel from Algeria, it was not immediately clear how widely the peril would spread in the wake of the hostage-taking at the sprawling In Amenas gas complex near the Libyan border.



A map of disputed islands in the East and South China Seas.

Map by National Geographic



Algeria, the fourth-largest crude oil producer on the continent and a major exporter of natural gas and refined fuels, may not have been viewed as the most hospitable climate for foreign energy companies, but that was due to unfavorable financial terms, bureaucracy, and corruption. The energy facilities themselves appeared to be safe, with multiple layers of security provided both by the companies and by government forces, several experts said. (See related photos: "Oil States: Are They Stable? Why It Matters.")


"It is particularly striking not only because it hasn't happened before, but because it happened in Algeria, one of the stronger states in the region," says Hanan Amin-Salem, a senior manager at the industry consulting firm PFC Energy, who specializes in country risk. She noted that in the long civil war that gripped the country throughout the 1990s, there had never been an attack on Algeria's energy complex. But now, hazard has spread from weak surrounding states, as the assault on In Amenas was carried out in an apparent retaliation for a move by French forces against the Islamists who had taken over Timbuktu and other towns in neighboring Mali. (See related story: "Timbuktu Falls.")


"What you're really seeing is an intensification of the fundamental problem of weak states, and empowerment of heavily armed groups that are really well motivated and want to pursue a set of aims," said Amin-Salem. In PFC Energy's view, she says, risk has increased in Mauritania, Chad, and Niger—indeed, throughout Sahel, the belt that bisects North Africa, separating the Sahara in the north from the tropical forests further south.


On Thursday, the London-based corporate consulting firm Exclusive Analysis, which was recently acquired by the global consultancy IHS, sent an alert to clients warning that oil and gas facilities near the Libyan and Mauritanian borders and in Mauritania's Hodh Ech Chargui province were at "high risk" of attack by jihadis.


"A Hot Place to Drill"


The attack at In Amenas comes at a time of unprecedented growth for the oil industry in Africa. (See related gallery: "Pictures: The Year's Most Overlooked Energy Stories.") Forecasters expect that oil output throughout Africa will double by 2025, says Amy Myers Jaffe, executive director of the energy and sustainability program at the University of California, Davis, who has counted 20 rounds of bidding for new exploration at sites in Africa's six largest oil-producing states.


Oil and natural gas are a large part of the Algerian economy, accounting for 60 percent of government budget revenues, more than a third of GDP and more than 97 percent of its export earnings. But the nation's resources are seen as largely undeveloped, and Algeria has tried to attract new investment. Over the past year, the government has sought to reform the law to boost foreign companies' interests in their investments, although those efforts have foundered.


Technology has been one of the factors driving the opening up of Africa to deeper energy exploration. Offshore and deepwater drilling success in the Gulf of Mexico and Brazil led to prospecting now under way offshore in Ghana, Mozambique, and elsewhere. (See related story: "New Oil—And a Huge Challenge—for Ghana.") Jaffe says the Houston-based company Anadarko Petroleum has sought to transfer its success in "subsalt seismic" exploration technology, surveying reserves hidden beneath the hard salt layer at the bottom of the sea, to the equally challenging seismic exploration beneath the sands of the Sahara in Algeria, where it now has three oil and gas operations.


Africa also is seen as one of the few remaining oil-rich regions of the world where foreign oil companies can obtain production-sharing agreements with governments, contracts that allow them a share of the revenue from the barrels they produce, instead of more limited service contracts for work performed.


"You now have the technology to tap the resources more effectively, and the fiscal terms are going to be more attractive than elsewhere—you put these things together and it's been a hot place to drill," says Jaffe, who doesn't see the energy industry's interest in Africa waning, despite the increased terrorism risk. "What I think will happen in some of these countries is that the companies are going to reveal new securities systems and procedures they have to keep workers safe," she says. "I don't think they will abandon these countries."


This story is part of a special series that explores energy issues. For more, visit The Great Energy Challenge.


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Quadruple DNA helix discovered in human cells








































Sixty years after James Watson and Francis Crick established that DNA forms a double helix, a quadruple-stranded DNA helix has turned up.













Quadruple helices that intertwine four, rather than two, DNA strands had been made in the laboratory, but were regarded as curiosities as there was no evidence that they existed in nature. Now, they have been identified in a range of human cancer cells.












The four-stranded packages of DNA, dubbed G-quadruplexes, are formed by the interaction of four guanine bases that together form a square. They appear to be transitory structures, and were most abundant when cells were poised to divide. They appeared in the core of chromosomes and also in telomeres, the caps on the tips of chromosomes that protect them from damage.












Because cancer cells divide so rapidly, and often have defects in their telomeres, the quadruple helix might be a feature unique to cancer cells. If so, any treatments that target them will not harm healthy cells.












"I hope our discovery challenges the dogma that we really understand DNA structure because Watson and Crick solved it in 1953," says Shankar Balasubramanian of the University of Cambridge, UK.











Tagged with antibodies













Balasubramanian's team identified the four-stranded structures in cancer cells with the help of an antibody that attaches exclusively to G-quadruplexes. To stop them from unravelling into the ordinary DNA, they exposed the cells to pyridostatin, a molecule that traps quadruple helices wherever they form.












This enabled the researchers to count how many formed at each stage of cell multiplication. The G-quadruplexes were most abundant in the "S-phase" – when cells replicate their DNA just prior to dividing.












"I expect they will also exist in normal cells, but I predict that there will be differences with cancer cells," says Balasubramanian. His hunch is that the G-quadruplexes are triggered into action by chaotic genomic mutations and reorganisations typical of cancerous or precancerous cells.












"This research further highlights the potential for exploiting these unusual DNA structures to beat cancer, and the next part of this is to figure out how to target them in tumour cells," says Julie Sharp of Cancer Research UK, which funded the research.












Another important question that Balasubramanian's and other teams will try to answer is whether G-quadruplexes play a role in embryo development, and whether such a role is mistakenly reactivated in cancer cells. "We plan to find out whether the quaduplexes are a natural nuisance, or there by design," he says.












Journal reference: Nature Chemistry, DOI: 10.1038/NCHEM.1548


















































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Auction for Singapore's F&N begins






SINGAPORE: A rare auction for a listed Singaporean company opened on Monday with Thai and Indonesian tycoons facing off to take over diversified conglomerate Fraser and Neave (F&N).

The auction was called by a stock-market watchdog to resolve a protracted battle for F&N after it sold off its most prized asset, Tiger Beer maker Asia Pacific Breweries, to Dutch giant Heineken in September.

At stake are F&N's property, beverages and publishing operations.

A spokesman for the Securities Industry Council (SIC), which called for the auction, said the process officially opened on Monday after Thai billionaire Charoen Sirivadhanabhakdi made a fresh pre-auction bid over the weekend.

Charoen's TCC Assets said Saturday it was increasing its offer for F&N shares it does not own from S$8.88 ($7.24) a share to S$9.55.

The total S$13.75 billion offer trumped the S$13.1 billion, or S$9.08 per share, bid tabled by property firm Overseas Union Enterprise (OUE) in mid-November, but it was still lower than F&N's closing price last week.

The stock surged 1.25 percent, or 12 cents, to S$9.70 by 0130 GMT on Monday.

The revised bid leaves "the Thais in the driving seat this morning", IG Markets said in a report.

"The drawn-out sparring match for the prized asset of Fraser & Neave has reached the final round with the Thais delivering what could be the knockout punch," the report added.

OUE is controlled by Indonesia's Lippo Group, whose founder is Indonesian tycoon Mochtar Riady. His son Stephen is OUE's executive chairman.

Under the auction rules set by SIC, a daily bidding process will take place starting Monday until one party gives up.

F&N shareholders had reacted coolly to the original bids after an adviser gave a much higher valuation than those tabled by TCC Assets and OUE.

- AFP/al



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Where to watch Obama's inauguration online


President Obama was sworn in for his second term today in a quiet ceremony at the White House. But it was a simple prelude to the festivities that will take place tomorrow when Obama and Vice President Joe Biden are sworn in outside of the U.S. Capital before hundreds of thousands of spectators -- and countless more who will be tuning in online to watch the event.


The last presidential inauguration ceremony in 2009 was considered by many to be the most interactive ever. But thanks to multimedia content -- including the return of high-resolution satellite imagery from GeoEye -- we may see just as many innovative forms of coverage for this year's event, even though this one is expected to be more low-key.


The public swearing-in ceremony begins at 11:30 a.m. ET, with the official event happening at 11:55 a.m.


Here's just a partial list of where to tune in. Feel free to add to it in the comments below.


 The 2013 Presidential Inaugural Committee will be hosting a live stream of the swearing-in ceremony starting at 11:30 a.m. ET, as well as live video of the inaugural parade and the Commander-in-Chief's Ball.


 The Wall Street Journal will be presenting the inauguration live at 11 a.m ET. It will be anchored by Washington bureau chief Gerald F. Seib, Wendy Bounds and Simon Constable from its New York studios. You can watch it on multiple platforms including WSJ Live, YouTube, Hulu, and Ustream.


 CBS News, our sister site, will be offering live coverage on TV and the Web starting at 10 a.m. ET. The site will also feature live coverage of related events, interactive slide shows, and analysis of Obama's first term and what's ahead in his next term.


 NBCNews.com and the NBC Politics app, which is available on the iPhone, iPad, or iPod Touch, will carry live streams of NBC News' coverage starting at 10 a.m. ET.


 C-SPAN's online live coverage of the inauguration starts at 7 a.m. ET and will include the swearing in, followed by the president's address, the inaugural luncheon, and the inaugural parade.

 Fox News will offer a live stream of the inaugural address as well as coverage of related events around Washington. Fox's coverage will also be available on Hulu.


 ABC News and Yahoo News have teamed up to produce three feeds of online video coverage across ABCNews.com, Yahoo News, GoodMorningAmerica.com, ABC News' iPad and iPhone apps and ABC News affiliate websites, as well as on the ABC News YouTube channel.


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Attack at Algeria Gas Plant Heralds New Risks for Energy Development



The siege by Islamic militants at a remote Sahara desert natural gas plant in Algeria this week signaled heightened dangers in the region for international oil companies, at a time when they have been expanding operations in Africa as one of the world's last energy frontiers. (See related story: "Pictures: Four New Offshore Drilling Frontiers.")


As BP, Norway's Statoil, Italy's Eni, and other companies evacuated personnel from Algeria, it was not immediately clear how widely the peril would spread in the wake of the hostage-taking at the sprawling In Amenas gas complex near the Libyan border.



A map of disputed islands in the East and South China Seas.

Map by National Geographic



Algeria, the fourth-largest crude oil producer on the continent and a major exporter of natural gas and refined fuels, may not have been viewed as the most hospitable climate for foreign energy companies, but that was due to unfavorable financial terms, bureaucracy, and corruption. The energy facilities themselves appeared to be safe, with multiple layers of security provided both by the companies and by government forces, several experts said. (See related photos: "Oil States: Are They Stable? Why It Matters.")


"It is particularly striking not only because it hasn't happened before, but because it happened in Algeria, one of the stronger states in the region," says Hanan Amin-Salem, a senior manager at the industry consulting firm PFC Energy, who specializes in country risk. She noted that in the long civil war that gripped the country throughout the 1990s, there had never been an attack on Algeria's energy complex. But now, hazard has spread from weak surrounding states, as the assault on In Amenas was carried out in an apparent retaliation for a move by French forces against the Islamists who had taken over Timbuktu and other towns in neighboring Mali. (See related story: "Timbuktu Falls.")


"What you're really seeing is an intensification of the fundamental problem of weak states, and empowerment of heavily armed groups that are really well motivated and want to pursue a set of aims," said Amin-Salem. In PFC Energy's view, she says, risk has increased in Mauritania, Chad, and Niger—indeed, throughout Sahel, the belt that bisects North Africa, separating the Sahara in the north from the tropical forests further south.


On Thursday, the London-based corporate consulting firm Exclusive Analysis, which was recently acquired by the global consultancy IHS, sent an alert to clients warning that oil and gas facilities near the Libyan and Mauritanian borders and in Mauritania's Hodh Ech Chargui province were at "high risk" of attack by jihadis.


"A Hot Place to Drill"


The attack at In Amenas comes at a time of unprecedented growth for the oil industry in Africa. (See related gallery: "Pictures: The Year's Most Overlooked Energy Stories.") Forecasters expect that oil output throughout Africa will double by 2025, says Amy Myers Jaffe, executive director of the energy and sustainability program at the University of California, Davis, who has counted 20 rounds of bidding for new exploration at sites in Africa's six largest oil-producing states.


Oil and natural gas are a large part of the Algerian economy, accounting for 60 percent of government budget revenues, more than a third of GDP and more than 97 percent of its export earnings. But the nation's resources are seen as largely undeveloped, and Algeria has tried to attract new investment. Over the past year, the government has sought to reform the law to boost foreign companies' interests in their investments, although those efforts have foundered.


Technology has been one of the factors driving the opening up of Africa to deeper energy exploration. Offshore and deepwater drilling success in the Gulf of Mexico and Brazil led to prospecting now under way offshore in Ghana, Mozambique, and elsewhere. (See related story: "New Oil—And a Huge Challenge—for Ghana.") Jaffe says the Houston-based company Anadarko Petroleum has sought to transfer its success in "subsalt seismic" exploration technology, surveying reserves hidden beneath the hard salt layer at the bottom of the sea, to the equally challenging seismic exploration beneath the sands of the Sahara in Algeria, where it now has three oil and gas operations.


Africa also is seen as one of the few remaining oil-rich regions of the world where foreign oil companies can obtain production-sharing agreements with governments, contracts that allow them a share of the revenue from the barrels they produce, instead of more limited service contracts for work performed.


"You now have the technology to tap the resources more effectively, and the fiscal terms are going to be more attractive than elsewhere—you put these things together and it's been a hot place to drill," says Jaffe, who doesn't see the energy industry's interest in Africa waning, despite the increased terrorism risk. "What I think will happen in some of these countries is that the companies are going to reveal new securities systems and procedures they have to keep workers safe," she says. "I don't think they will abandon these countries."


This story is part of a special series that explores energy issues. For more, visit The Great Energy Challenge.


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Earth may be crashing through dark matter walls



































Earth is constantly crashing through huge walls of dark matter, and we already have the tools to detect them. That's the conclusion of physicists who say the universe may be filled with a patchwork quilt of force fields created shortly after the big bang.












Observations of how mass clumps in space suggest that about 86 per cent of all matter is invisible dark matter, which interacts with ordinary matter mainly through gravity. The most popular theory is that dark matter is made of weakly interacting massive particles.











WIMPs should also interact with ordinary matter via the weak nuclear force, and their presence should have slight but measurable effects. However, years of searches for WIMPs have been coming up empty.













"So far nothing is found, and I feel like it's time to broaden the scope of our search," says Maxim Pospelov of the University of Victoria in Canada. "What we propose is to look for some other signatures."











Bubbly cosmos













Pospelov and colleagues have been examining a theory that at least some of the universe's dark matter is tied up in structures called domain walls, akin to the boundaries between tightly packed bubbles. The idea is that the hot early universe was full of an exotic force field that varied randomly. As the universe expanded and cooled, the field froze, leaving a patchwork of domains, each with its own distinct value for the field.












Having different fields sit next to each other requires energy to be stored within the domain walls. Mass and energy are interchangeable, so on a large scale a network of domain walls can look like concentrations of mass – that is, like dark matter, says Pospelov.












If the grid of domain walls is packed tightly enough – say, if the width of the domains is several hundred times the distance between Earth and the sun – Earth should pass through a domain wall once every few years. "As a human, you wouldn't feel a thing," says Pospelov. "You will go through the wall without noticing." But magnetometers – devices that, as the name suggests, measure magnetic fields – could detect the walls, say Pospelov and colleagues in a new study. Although the field inside a domain would not affect a magnetometer, the device would sense the change when Earth passes through a domain wall.












Dark matter walls have not been detected yet because anyone using a single magnetometer would find the readings swamped by noise, Pospelov says. "You'd never be able to say if it's because the Earth went through a bizarre magnetic field or if a grad student dropped their iPhone or something," he says.











Network needed













Finding the walls will require a network of at least five detectors spread around the world, Pospelov suggests. Colleagues in Poland and California have already built one magnetometer each and have shown that they are sensitive enough for the scheme to work.












Domain walls wouldn't account for all the dark matter in the universe, but they could explain why finding particles of the stuff has been such a challenge, says Pospelov.












If domain walls are found, the news might come as a relief to physicists still waiting for WIMPs to show up. Earlier this month, for instance, a team working with a detector in Russia that has been running for more than 24 years announced that they have yet to see any sign of these dark matter candidates.












Douglas Finkbeiner of the Harvard-Smithsonian Center for Astrophysics, who was not involved in Pospelov's study, isn't yet convinced that dark matter walls exist. But he is glad that physicists are keeping an open mind about alternatives to WIMPs.












"We've looked for WIMP dark matter in so many ways," he says. "At some point you have to ask, are we totally on the wrong track?"












Journal reference: Physical Review Letters, DOI: 10.1103/PhysRevLett.110.021803


















































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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Hundreds stranded as Scoot flights delayed






SINGAPORE: Hundreds of passengers were stranded after their flights on the budget airline Scoot were delayed.

Callers to the MediaCorp News hotline said flights from Singapore to Bangkok in Thailand and back, and flights from Singapore to Tianjin in China were affected.

One caller reported that more than 300 passengers were stuck at Changi Airport after their scheduled flight TZ88 to Tianjin did not take off.

A Scoot spokesperson said the issue arose when due to technical reasons, the airline was not able to accommodate 23 people booked on the Bangkok bound flight.

After unsuccessfully seeking volunteers, the last 23 passengers to check in were told that they could not board and would be given tickets on the next day's flight plus compensation - in accordance with the terms and conditions they accepted upon purchase of their tickets.

The spokesperson said regrettably the 23 passengers would not accept the offer.

A large group of their friends who were already in the boarding area then became disruptive and would not let the flight board.

Eventually, after a lengthy delay, 23 other passengers agreed to travel at a later date and the aircraft left for Bangkok.

The aircraft deployed to Bangkok, upon its return to Singapore, subsequently operates to Tianjin.

The spokesperson added that because of the delayed departure to Bangkok, its return to Singapore was also delayed and, hence, the Tianjin flight too.

Some passengers who had checked in for the Tianjin flight returned home, while others stayed in the airport and have been provided meal vouchers and refreshments.

Scoot said it sincerely regrets the disruption.

- CNA/ck



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