Showing posts with label World. Show all posts
Showing posts with label World. Show all posts

West vs Asia education rankings are misleading






















Western schoolchildren are routinely outperformed by their Asian peers, but worrying about it is pointless






















MATHEMATICS and science are as essential to modern economies as coal was to the industrial revolution. So when the results of international tests show Western schoolchildren lagging behind their peers in countries like Singapore and Japan, alarm bells start ringing.












The latest results to cause consternation are from a comparison of mathematical and scientific knowledge called TIMSS, or Trends in International Mathematics and Science Study. This is given every four years to 9-10-year-olds and 13-14-year-olds from more than 50 countries.












The results, released last month, show that students from the UK, US and Australia continue to perform disappointingly. In maths, for example, English, American and Australian 13-year-olds were outperformed by their peers in South Korea, Singapore, Chinese Taipei, Hong Kong, Japan and Russia. It was a similar story in science.












Cue much wailing and gnashing of teeth. US secretary of education Arne Duncan lamented that "a number of nations are out-educating us today... If we as a nation don't turn that around, those nations will soon be outcompeting us in a knowledge-based, global economy."












Australia's Education Standards Institute director Kevin Donnelly said the results proved that the country's education system had gone "pear-shaped".












However, there are reasons to think that such worries are misplaced.












First of all, although the results are not world-beating, they are far from terrible. All were above average, and better than many other developed nations. For the US at least, they continue a trend of long-term improvement. In the first international mathematics survey, conducted in 1964, the US finished second from bottom.












Second, the common-sense connection between test scores and future economic success doesn't necessarily hold up. For developed nations, there is scant evidence that TIMSS rankings correlate with measures of prosperity or future success. The same holds for a similar test, the Program for International Student Achievement (PISA).












In 2008, Christopher Tienken, then at Rutgers University in New Jersey, compared 1995 TIMSS scores with the 2006 Growth Competitiveness Index. This index was devised by the World Economic Forum to measure a nation's future economic health. Tienken found that for developed countries there was no statistically significant relationship (International Journal of Education Policy & Leadership, vol 3, no 4).












Tienken, now at Seton Hall University in South Orange, New Jersey, has since done a similar analysis of the 2003 PISA mathematics rankings and two measures of economic success: per-capita GDP in 2010, and the 2010-2011 Growth Competitiveness Index. The study, to be published in April, again found no statistically significant relationship.












These findings make TIMSS and PISA rankings seem irrelevant. But it could be worse than that. In many cases, high test scores correlate with economic failure.












Japanese students, for example, have always been near the top of the TIMSS. You might expect those high-flying students to be driving a high-flying economy. Yet the Japanese economy stagnated throughout the 1990s and 2000s.












There may be no causal connection, but the same negative correlation is seen elsewhere.












In 2007, Keith Baker of the US Department of Education made a rough comparison of long-term correlations between the 1964 mathematics scores and several measures of national success decades later.












Baker found negative relationships between mathematics rankings and numerous measures of prosperity and well-being: 2002 per-capita wealth, economic growth from 1992 to 2002 and the UN's Quality of Life Index. Countries scoring well on the tests were also less democratic. Baker concluded that league tables of international success are "worthless" (Phi Delta Kappan, vol 89, p 101).












A more recent analysis of 23 countries found a significant negative relationship between 2009 PISA scores and ranking on the Global Entrepreneurship Monitor's measure of perceived entrepreneurial capabilities. This counts the percentage of people in a country who feel confident that they could start a business.












With so many indicators showing a negative relationship, perhaps we need to reconsider how we interpret success - or failure - on international education scores. "If we believe that these tests actually tell us how well a kid or a country is doing, and then we hold people accountable for that, those people are going to focus on what's most likely to be tested, and they're going to cut out everything else," says Tienken.


















This is especially relevant to the UK, where the education secretary Michael Gove has justified some of his controversial reforms by referring to the country's performance on the international educational stage.












We might instead consider that in a global economy, where the answers to almost any standard question are a few smartphone taps away, skills like creativity and initiative will be the true drivers of prosperity. None of these traits can be measured easily by tests. When testing consumes precious educational time, focus and money, they get squeezed out.












"Standardised tests reward the ability to find answers to pre-existing questions, but finding the question is more important," says Yong Zhao, an education researcher at the University of Oregon in Eugene who found the negative relationship between PISA scores and entrepreneurship.












We must, of course, continue to promote the importance of mathematics and science, but fixating on international tests as a way to achieve this could prove counterproductive.




















MacGregor Campbell is a New Scientist consultant based in Portland, Oregon, and a former teacher



































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Silent Skype calls can hide secret messages









































Got a secret message to send? Say it with silence. A new technique can embed secret data during a phone call on Skype. "There are concerns that Skype calls can be intercepted and analysed," says Wojciech Mazurczyk at the Institute of Telecommunications in Warsaw, Poland. So his team's SkypeHide system lets users hide extra, non-chat messages during a call.












Mazurczyk and his colleagues Maciej Karaƛ and Krysztof Szczypiorski analysed Skype data traffic during calls and discovered an opportunity in the way Skype "transmits" silence. Rather than send no data between spoken words, Skype sends 70-bit-long data packets instead of the 130-bit ones that carry speech.












The team hijacks these silence packets, injecting encrypted message data into some of them. The Skype receiver simply ignores the secret-message data, but it can nevertheless be decoded at the other end, the team has found. "The secret data is indistinguishable from silence-period traffic, so detection of SkypeHide is very difficult," says Mazurczyk. They found they could transmit secret text, audio or video during Skype calls at a rate of almost 1 kilobit per second alongside phone calls.












The team aims to present SkypeHide at a steganography conference in Montpellier, France, in June.


















































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Graphic in-car crash warnings to slow speeding drivers



Paul Marks, chief technology correspondent


142093734.jpg

(Image: Cityscape/a.collection/Getty)


"You would die if you crashed right now." Would such a warning make you take your foot off the accelerator? That's the idea behind a scheme to warn drivers of the consequences of speeding developed by engineers at Japan's Fukuoka Institute of Technology and heavy goods vehicle maker UD Trucks, also in Japan. They are developing what they call a "safe driving promotion system" that warns drivers what kind of crash could ensue if they don't slow down.






Their patent-pending system uses the battery of radar, ultrasound sonar and laser sensors found in modern cars and trucks to work out the current kinetic energy of a vehicle. It also checks out the distance to the vehicle in front and keeps watch on its brake lights, too. An onboard app that has learned the driver's reaction time over all their previous trips then computes the likelihood of collision - and if the driver's speed is risky, it displays the scale of damage that could result.


The warning that flashes up could vary from something like a potential whiplash injury due to a rear-end shunt to a fatal, car-crushing collision with fire. The inventors hope this kind of in-car advice will promote safety more forcefully than current warning systems, which merely display the distance to the vehicle in front. "A sense of danger will be awakened in the driver that makes them voluntarily refrain from dangerous driving," they predict.




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Unique meteorite hints Mars stayed moist for longer








































A scorched rock bought in Morocco turned out to be a diamond in the rough. The unusual meteorite may be the first sample of the Red Planet's crust ever to hit Earth, and it suggests that Mars held on to its water for longer than we thought.












The meteorite, dubbed Northwest Africa (NWA) 7034, is strikingly different from the 111 previously discovered Martian meteorites. "You could look at meteorites for the rest of your life and not find another one like this," says Carl Agee of the University of New Mexico in Albuquerque, who was part of a team that has recently analysed NWA 7034. "This is in its own new group."













The most distinctive difference is its mineral content. Previously found meteorites had unearthly oxygen isotopes that marked them as being from another planet, and their volcanic origin made Mars the most likely culprit. But compared to these meteorites, surface rocks studied by Martian rovers and orbiters are much richer in light metals such as potassium and sodium. This suggests the known meteorites came from deeper inside the Red Planet.












"We're watching data coming back from Mars, and everything that comes back doesn't look like the Martian meteorites we have in our collections," says Munir Humayun of Florida State University in Tallahassee, who was not involved in the new study. "That's kind of a bummer."











By contrast, NWA 7034's chemistry closely resembles the rock and soil studied by NASA's Spirit rover. Preliminary measurements from the Curiosity rover, which landed in August 2012, suggest its landing site also has a similar composition.












Drying era













"Finally, it looks as if we have a sample that is very similar to the rocks that the rovers are seeing," Agee says. What's more, the Moroccan meteorite may come from a period in Mars' history when the planet was drying out.











Mars is thought to have once been much warmer, wetter and more hospitable to life. Then it morphed into the dry, cold desert we see today. The oldest known Mars meteorite, called the Allan Hills meteorite, is 4.5 billion years old. The other 110 meteorites are much younger – 1.5 billion years old at most – and formed after Mars is thought to have lost its water.













NWA 7034 is 2.1 billion years old, making it the first meteorite that may hail from the transitional era. Intriguingly, it has as much as 30 times more water than previous meteorites locked up in its minerals. "It opens our mind to the possibility that climate change on Mars was more gradual," Agee says. "Maybe it didn't lose its water early on."











Hot deal













The 319.8-gram rock found its way to Agee's lab via an amateur collector named Jay Piatek. He bought it for what turned out to be a knock-down price from a Moroccan meteorite dealer, who recognised its scorched exterior as a sign that it fell from space. "It didn't look like a Martian meteorite, so it didn't have the Martian meteorite value at the time," Agee says, adding that Mars rock can go for $500 to $1000 per gram.












Piatek brought the rock to Agee's lab to find out what it was. "Honestly, I had never seen anything like it. I was baffled, initially," Agee says. "Now, about a year and a half after the first time I set eyes on this thing, we are convinced that it is Martian, a new type, and has important implications for understanding the history of Mars."












Humayun says the results so far are exciting, and that the rock's carbon content could also yield valuable insights once other researchers get their hands on it.












"What's the most exciting thing you would want to do with a rock that comes from the near surface of Mars, especially one that seems to be loaded with water?" he asks. "I would say, what about life?" Agee and colleagues found organic matter in the meteorite, he says, but it will take more work to determine whether it was of Martian or terrestrial origin.












If it's Martian, "that would spark a lot of excitement", he says.












Journal reference: Science, DOI: 10.1126/science.1228858


















































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2013 Smart Guide: More people than ever 'mentally ill'



































Read more: "2013 Smart Guide: 10 ideas that will shape the year"












Mental illness could strike more of us in 2013 than ever before. But don't blame the strain of modern living: changes to diagnostic guidelines mean unprecedented numbers of people could be taking psychoactive drugs.











In May, the American Psychiatric Association will publish the latest edition of its diagnostic manual, known as DSM-5. Changes to the text approved in December mean, for example, that some people grieving after a bereavement could soon be diagnosed with depression. And Asperger's syndrome is to be subsumed into autism spectrum disorder.













That change is likely to decrease the number of children diagnosed with some form of autism, because not all those who might have been diagnosed with Asperger's would meet autism criteria. But overall, critics fear an expansion of the boundaries of mental illness. "The phrase I use is the 'sickening of society'," says Frank Farley of Temple University in Philadelphia, Pennsylvania, one of the organisers of a petition that tried unsuccessfully to open DSM-5 up to wider scientific review.












Some 20 per cent of US citizens have experienced a diagnosable mental illness in the past year. How this figure will now change is unclear - for the most part the implications for rates of diagnosis haven't been studied.











Allen Frances of Duke University in Durham, North Carolina, led the last DSM revision in 1994 and has been a fierce critic of DSM-5. He fears drug companies will scent a marketing opportunity. Already, he says, "antipsychotics are being giving out like candy".





















































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In-depth 2012: The best long reads of the year









































Read more: "2013 Smart Guide: 10 ideas that will shape the year"












Dig deeper, look closer and think harder – these are the goals of New Scientist's in-depth articles. Each one is perfect for saving in your favourite read-it-later app and curling up in front of a glowing tablet for a good long read.












These are our editors' picks of our best features of the year, and all are prime examples of the amazing breadth of big ideas that were ripe for the tackling in 2012. When you have finished digesting these readable meals, visit our in-depth articles archive if you're hungry for more.











Richard Webb: "You might not have heard of the algorithm that runs the world." I certainly hadn't, or that its mathematical foundations are starting to look a little wobbly. An eye-opening examination of how seemingly abstruse mathematics is in fact deeply embedded in modern life: "The algorithm that runs the world"












Sally Adee: Gastric bypass surgery is the best surgery you're not getting, said Dr Oz on his popular medical advice show in the US. Because of enthusiasm from people like him, this operation has become massively popular – but by whimsically hacking at our stomach, might we might be messing with a system far more complicated than anyone really understands? Samantha Murphy had the surgery and began to realise that losing 45 kilograms could come with some profound neurological trade-offs: "Change your stomach, change your brain"












Michael Le Page: Nowadays most people either haven't heard of the 1970 book The Limits to Growth, or believe – wrongly – that the research it was based on has been discredited. But the main message of Limits is perhaps more relevant than ever – that a delayed response to mounting environmental problems leads to catastrophe further down the line: "Boom and doom: Revisiting prophecies of collapse"












Richard Fisher: This is a simple story about a scientific mystery. Strange rumbles, whistles and blasts have been reported all over the world for centuries. In New York state, they are called "Seneca guns"; in the Italian Apennines they are described as brontidi, which means thunder-like; in Japan they are yan; and along the coast of Belgium they are called mistpouffers – or fog belches. Yet the cause is often unexplained – what on Earth could be behind them? "Mystery booms: The source of a worldwide sonic enigmaSpeaker"












Valerie Jamieson: It's been a sensational year for particle physics, but the Higgs boson isn't the only fascinating particle in town. Meet 11 more particles that change our understanding of the subatomic world: "11 particles for 11 physics puzzlesMovie Camera"












David Robson: What is the secret of the legendary "flow state" that seems to mark out genius in everyone from piano virtuosos to tennis champions? With the latest brain stimulation techniques, it may soon be within everyone's reach, and Sally Adee writes with panache as she describes her own use of the technology during a terrifying marksmanship training session. This has everything I want to read in a story – drama, a revolutionary idea and some practical advice for anyone to try at home: "Zap your brain into the zone: Fast track to pure focus"












Graham Lawton: The writer of this article, Christopher Kemp, is a self-confessed lover of marginalia – nooks and crannies of science that are often overlooked. But as this beautifully written story reveals, those nooks and crannies often contain rich and fascinating material. Material, in fact, like ambergris: "Heaven scent: The grey gold from a sperm whale's gut"












Ben Crystall: Many people may remember the wonder material Starlite from an episode of BBC TV's Tomorrow's World – it seemed to have a miraculous ability to withstand fire and heat. So what happened to it? In this feature Richard Fisher uncovers the strange tale of Starlite and its eccentric inventor Maurice Ward, and on the way reveals fascinating details about Ward and his creation. And though Ward is dead, the story may not be over – it now looks like Starlite could get a second chance… "The power of cool: Whatever became of Starlite?"












Clare Wilson: I enjoyed working on this feature the most this year because to me it truly represents the future of medicine. New Scientist often predicts that some new medicine or technology will be available in five years' time. When it comes to using gene therapies or stem cell therapies on babies in the womb – the subject of this feature – the timeline is probably more uncertain, yet I don't see how anyone can doubt that some day it will happen: "Fetal healing: Curing congenital diseases in the womb"



















































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2012 review: The year in health science









































Read more: "2013 Smart Guide: 10 ideas that will shape the year"











The first half of 2012 will be remembered for the saga over whether or not to publish controversial research involving versions of the H5N1 bird flu virus engineered to spread more easily in mammals. In the end openness won out, and both contentious studies did finally see the light of day.












This was also the year that saw the battle to eradicate polio reach its crucial endgame – just as another problem, in the form of totally drug resistant tuberculosis, reared its head.












Away from infectious disease, 2012 brought us a theory on the link between Tutankhamun, epilepsy and the first monotheistic religion, and an insight into the perils of premature ageing in Italy's ominously named Triangle of Death. Here are 10 more of the year's memorable stories.












Babies are born dirty, with a gutful of bacteria
Far from being sterile, babies come complete with an army of bacteria. The finding could have implications for gut disorders and our health in general












Forensic failure: 'Miscarriages of justice will occur'
Our survey of UK forensic scientists reveals that many are concerned that closure of the Forensic Science Service will lead to miscarriages of justice












Scandal of an underfunded and undertreated cancer
Lung cancer in those who have never smoked is on the rise – but they face the same stigma as their smoking counterparts












Ovarian stem cells discovered in humans
Stem cells capable of forming new eggs could promise limitless eggs for IVF treatments, and the rejuvenation of older eggs












Paralysis breakthrough: spinal cord damage repaired
An implant helping paralysed people stand unaided suggests the spinal cord is able to recover function years after severe damage












A real fMRI high: My ecstasy brain scan
Graham Lawton reports the highs, lows and psychedelic purple doors involved in taking MDMA while having his brain scanned












You may carry cells from siblings, aunts and uncles
Male cells found in the umbilical cord blood of baby girls with older brothers suggests fetal cells cross between mother and baby more than once thought












Can we deter athletes who self-harm to win?
The Paralympics may encourage a debate on a dangerous practice – and potential ways to prevent it












First non-hormonal male 'pill' prevents pregnancy
A non-hormonal drug that temporarily reverses male fertility appears to have few side effects in mice












Mining MRSA genetic code halts superbug outbreak
Whole genome sequencing of an MRSA outbreak has identified the person who unwittingly spread the bacteria around a hospital, stopping further infection

















































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2013 Smart Guide: Curiosity to reach Mars mother lode









































Read more: "2013 Smart Guide: 10 ideas that will shape the year"











NASA'S Curiosity rover is about to have its cake and eat it too. Around September, the rover should get its first taste of layered sediments at Aeolis Mons, a mountain over 5 kilometres tall that may hold preserved signs of life on Mars.












Previous rovers uncovered ample evidence of ancient water, a key ingredient for life as we know it. With its sophisticated on-board chemistry lab, Curiosity is hunting for more robust signs of habitability, including organic compounds - the carbon-based building blocks of life as we know it.













Observations from orbit show that the layers in Aeolis Mons - also called Mount Sharp - contain minerals thought to have formed in the presence of water. That fits with theories that the rover's landing site, Gale crater, was once a large lake. Even better, the layers were probably laid down quickly enough that the rocks could have held on to traces of microorganisms, if they existed there.


















If the search for organics turns up empty, Aeolis Mons may hold other clues to habitability, says project scientist John Grotzinger of the California Institute of Technology in Pasadena. The layers will reveal which minerals and chemical processes were present in Mars's past. "We're going to find all kinds of good stuff down there, I'm sure," he says.











Curiosity will explore a region called Glenelg until early February, and then hit the gas. The base of the mountain is 10 kilometres away, and the rover can drive at about 100 metres a day at full speed. The journey should take between six and nine months, but will include stops to check out any interesting landmarks. After all, some of the most exciting discoveries from Mars rovers were a result of serendipity.













"It's a discovery-driven mission," Grotzinger says. "We picked this site because we wanted to go to Mount Sharp. But we'll kind of follow our nose, and see where it leads us off on side trails."




















































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Today on New Scientist: 28 December 2012







Best videos of 2012: Rare view of Challenger tragedy

Watch a rare amateur video of the Challenger explosion, our most-viewed video of the year



Strong jet stream super-charged US Christmas storms

Record snowfall and dozens of tornadoes snarled holiday travel as a powerful winter storm plowed across much of the US, while rainstorms battered the UK



2012 review: The year in life science

The year's biggest stories in life science, including James Cameron's descent into the Mariana trench and efforts to break into Antarctica's buried lakes



Superstorm lessons for adapting to climate change

As the post-Sandy rebuild gets under way, coastal cities around the world will be watching



Best videos of 2012: First MRI movie of childbirth

Watch a unique view of a baby's birth, at number 2 in our countdown of the year's top science videos



Fleadom or death: Reviving the glorious flea circus

The parasite-based sideshows were almost done for by the domestic vacuum cleaner - but they are bouncing back, finds Graham Lawton



Approval for gene-modified salmon spawns controversy

Apparently months late, US regulators have declared genetically engineered fish safe to farm and eat, but final approval could be some way off



Best videos of 2012: New aircraft flies inside out

Watch a novel flying machine use a unique mechanism to propel itself, at number 3 in our countdown of the top videos of the year



2012 review: The year in technology

The year's biggest stories in technology, including Kinect devices that may spot signs of autism and controlling a robot by the power of thought



Superdoodles: The science of scribbling

Far from being a distraction, doodling has an important purpose - and you can harness it



2013 Smart Guide: Wave goodbye to the mouse

The Leap, a 3D motion control device set to launch next year, will let you control your computer with touch-free hand and finger movements





Read More..

Today on New Scientist: 28 December 2012







Best videos of 2012: Rare view of Challenger tragedy

Watch a rare amateur video of the Challenger explosion, our most-viewed video of the year



Strong jet stream super-charged US Christmas storms

Record snowfall and dozens of tornadoes snarled holiday travel as a powerful winter storm plowed across much of the US, while rainstorms battered the UK



2012 review: The year in life science

The year's biggest stories in life science, including James Cameron's descent into the Mariana trench and efforts to break into Antarctica's buried lakes



Superstorm lessons for adapting to climate change

As the post-Sandy rebuild gets under way, coastal cities around the world will be watching



Best videos of 2012: First MRI movie of childbirth

Watch a unique view of a baby's birth, at number 2 in our countdown of the year's top science videos



Fleadom or death: Reviving the glorious flea circus

The parasite-based sideshows were almost done for by the domestic vacuum cleaner - but they are bouncing back, finds Graham Lawton



Approval for gene-modified salmon spawns controversy

Apparently months late, US regulators have declared genetically engineered fish safe to farm and eat, but final approval could be some way off



Best videos of 2012: New aircraft flies inside out

Watch a novel flying machine use a unique mechanism to propel itself, at number 3 in our countdown of the top videos of the year



2012 review: The year in technology

The year's biggest stories in technology, including Kinect devices that may spot signs of autism and controlling a robot by the power of thought



Superdoodles: The science of scribbling

Far from being a distraction, doodling has an important purpose - and you can harness it



2013 Smart Guide: Wave goodbye to the mouse

The Leap, a 3D motion control device set to launch next year, will let you control your computer with touch-free hand and finger movements





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2013 Smart Guide: Wave goodbye to the mouse



































Read more: "2013 Smart Guide: 10 ideas that will shape the year"












If the Leap is anything to go by, the days of the mouse are numbered. The 3D-gesture-sensing device lets you control your computer with a wave of your hand - and it could be yours early next year.












Developed by Silicon Valley startup Leap Motion, the Leap is the size of a smartphone and behaves like a smaller, super-accurate version of Microsoft's Kinect motion sensor. It is also significantly cheaper, at only $70. Connected to your PC or Mac's USB port, the Leap creates a 3D interaction space in front of your computer screen, in which the tiniest motions of your fingers, or gestures of your hands, can be sensed.












As a result, you can wave up with your hand to scroll up a web page, or point into a game with an index finger to move characters where you want them to go. Standard Windows or Mac applications can be controlled by making clicking, grabbing, scrolling and pinch-to-zoom gestures, the company says.












Leap Motion won't say how the software achieves its accuracy - they claim it is 200 times that of existing motion-sensing technologies, able to track movements to one-hundredth of a millimetre. We do know that it uses infrared LEDs and cameras, with light from the LEDs reflected from your hands back to the cameras.












Pointing and clicking has been a mainstay of our interactions with personal computers for nearly 30 years, and old habits die hard. But if the Leap is as good as the pre-release hype suggests, the mouse could soon be ousted, with little more than a wave goodbye.




















































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Three gods: The hardest logic puzzle ever


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New Scientist 2012 holiday quiz

















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THIS was the year we held our breath in almost unbearable anticipation while we waited to see whether physicists at the Large Hadron Collider would finally get a clear view of the Higgs boson, so tantalisingly hinted at last December. Going a bit blue, we held on through March when one of the LHC's detectors seemed to lose sight of the thing, before exhaling in a puff of almost-resolution in July, when researchers announced that the data added up to a fairly confident pretty-much-actual-discovery of the particle.












Early indications were that it might be a weird and wonderful variety of the Higgs, prompting a collective gasp of excitement. That was followed by a synchronised sigh of mild disappointment when later data implied that it was probably the most boring possible version after all, and not a strange entity pointing the way to new dimensions and the true nature of dark matter. Prepare yourself for another puff or two as the big story moves on next year.













This respirational rollercoaster might be running a bit too slowly to supply enough oxygen to the brain of a New Scientist reader, so we have taken care to provide more frequent oohs and aahs using less momentous revelations. See how many of the following unfundamental discoveries you can distinguish from the truth-free mimics that crowd parasitically around them.












1. Which of these anatomical incongruities of the animal kingdom did we describe on 14 July?












  • a) A fish, found in a canal in Vietnam, that wears its genitals under its mouth
  • b) A frog, found in a puddle in Peru, that has no spleen
  • c) A lizard, found in a cave in Indonesia, that has four left feet
  • d) A cat, found in a tree in northern England, that has eight extra teeth

2. "A sprout by any other name would taste as foul." So wrote William Shakespeare in his diary on 25 December 1598, setting off the centuries of slightly unjust ridicule experienced by this routinely over-cooked vegetable. But which forbiddingly named veg did we report on 7 July as having more health-giving power than the sprout, its active ingredient being trialled as a treatment for prostate cancer?












  • a) Poison celery
  • b) Murder beans
  • c) Inconvenience potatoes
  • d) Death carrots

3. Scientists often like to say they are opening a new window on things. Usually that is a metaphor, but on 10 November we reported on a more literal innovation in the fenestral realm. It was:












  • a) A perspex peephole set in the nest of the fearsome Japanese giant hornet, to reveal its domestic habits
  • b) A glass porthole implanted in the abdomen of a mouse, to reveal the process of tumour metastasis
  • c) A crystal portal in the inner vessel of an experimental thorium reactor, to reveal its nuclear fires to the naked eye
  • d) A small window high on the wall of a basement office in the Princeton physics department, to reveal a small patch of sky to postgraduate students who have not been outside for seven years

4. On 10 March we described a new material for violin strings, said to produce a brilliant and complex sound richer than that of catgut. What makes up these super strings?












  • a) Mousegut
  • b) Spider silk
  • c) Braided carbon nanotubes
  • d) An alloy of yttrium and ytterbium

5. While the peril of climate change looms inexorably larger, in this festive-for-some season we might take a minute to look on the bright side. On 17 March we reported on one benefit of global warming, which might make life better for some people for a while. It was:












  • a) Receding Arctic sea ice will make it easier to lay undersea cables to boost internet speeds
  • b) Increasing temperatures mean that Greenlanders can soon start making their own wine
  • c) Rising sea levels could allow a string of new beach resorts to open in the impoverished country of Chad
  • d) More acidic seawater will add a pleasant tang to the salt water taffy sweets made in Atlantic City

6. In Alaska's Glacier Bay national park, the brown bear in the photo (above, right) is doing something never before witnessed among bearkind, as we revealed on 10 March. Is it:












  • a) Making a phonecall?
  • b) Gnawing at a piece of whalebone to dislodge a rotten tooth?
  • c) Scratching itself with a barnacle-covered stone tool?
  • d) Cracking oysters on its jaw?

7. Men have much in common with fruit flies, as we revealed on 24 March. When the sexual advances of a male fruit fly are rejected, he may respond by:












  • a) Whining
  • b) Hitting the booze
  • c) Jumping off a tall building
  • d) Hovering around the choosy female long after all hope is lost

8. While great Higgsian things were happening at the LHC, scientists puzzled over a newly urgent question: what should we call the boson? Peter Higgs wasn't the only physicist to predict its existence, and some have suggested that the particle's name should also include those other theorists or perhaps reflect some other aspect of the particle. Which of the following is a real suggestion that we reported on 24 March?

























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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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New Scientist 2012 holiday quiz

















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THIS was the year we held our breath in almost unbearable anticipation while we waited to see whether physicists at the Large Hadron Collider would finally get a clear view of the Higgs boson, so tantalisingly hinted at last December. Going a bit blue, we held on through March when one of the LHC's detectors seemed to lose sight of the thing, before exhaling in a puff of almost-resolution in July, when researchers announced that the data added up to a fairly confident pretty-much-actual-discovery of the particle.












Early indications were that it might be a weird and wonderful variety of the Higgs, prompting a collective gasp of excitement. That was followed by a synchronised sigh of mild disappointment when later data implied that it was probably the most boring possible version after all, and not a strange entity pointing the way to new dimensions and the true nature of dark matter. Prepare yourself for another puff or two as the big story moves on next year.













This respirational rollercoaster might be running a bit too slowly to supply enough oxygen to the brain of a New Scientist reader, so we have taken care to provide more frequent oohs and aahs using less momentous revelations. See how many of the following unfundamental discoveries you can distinguish from the truth-free mimics that crowd parasitically around them.












1. Which of these anatomical incongruities of the animal kingdom did we describe on 14 July?












  • a) A fish, found in a canal in Vietnam, that wears its genitals under its mouth
  • b) A frog, found in a puddle in Peru, that has no spleen
  • c) A lizard, found in a cave in Indonesia, that has four left feet
  • d) A cat, found in a tree in northern England, that has eight extra teeth

2. "A sprout by any other name would taste as foul." So wrote William Shakespeare in his diary on 25 December 1598, setting off the centuries of slightly unjust ridicule experienced by this routinely over-cooked vegetable. But which forbiddingly named veg did we report on 7 July as having more health-giving power than the sprout, its active ingredient being trialled as a treatment for prostate cancer?












  • a) Poison celery
  • b) Murder beans
  • c) Inconvenience potatoes
  • d) Death carrots

3. Scientists often like to say they are opening a new window on things. Usually that is a metaphor, but on 10 November we reported on a more literal innovation in the fenestral realm. It was:












  • a) A perspex peephole set in the nest of the fearsome Japanese giant hornet, to reveal its domestic habits
  • b) A glass porthole implanted in the abdomen of a mouse, to reveal the process of tumour metastasis
  • c) A crystal portal in the inner vessel of an experimental thorium reactor, to reveal its nuclear fires to the naked eye
  • d) A small window high on the wall of a basement office in the Princeton physics department, to reveal a small patch of sky to postgraduate students who have not been outside for seven years

4. On 10 March we described a new material for violin strings, said to produce a brilliant and complex sound richer than that of catgut. What makes up these super strings?












  • a) Mousegut
  • b) Spider silk
  • c) Braided carbon nanotubes
  • d) An alloy of yttrium and ytterbium

5. While the peril of climate change looms inexorably larger, in this festive-for-some season we might take a minute to look on the bright side. On 17 March we reported on one benefit of global warming, which might make life better for some people for a while. It was:












  • a) Receding Arctic sea ice will make it easier to lay undersea cables to boost internet speeds
  • b) Increasing temperatures mean that Greenlanders can soon start making their own wine
  • c) Rising sea levels could allow a string of new beach resorts to open in the impoverished country of Chad
  • d) More acidic seawater will add a pleasant tang to the salt water taffy sweets made in Atlantic City

6. In Alaska's Glacier Bay national park, the brown bear in the photo (above, right) is doing something never before witnessed among bearkind, as we revealed on 10 March. Is it:












  • a) Making a phonecall?
  • b) Gnawing at a piece of whalebone to dislodge a rotten tooth?
  • c) Scratching itself with a barnacle-covered stone tool?
  • d) Cracking oysters on its jaw?

7. Men have much in common with fruit flies, as we revealed on 24 March. When the sexual advances of a male fruit fly are rejected, he may respond by:












  • a) Whining
  • b) Hitting the booze
  • c) Jumping off a tall building
  • d) Hovering around the choosy female long after all hope is lost

8. While great Higgsian things were happening at the LHC, scientists puzzled over a newly urgent question: what should we call the boson? Peter Higgs wasn't the only physicist to predict its existence, and some have suggested that the particle's name should also include those other theorists or perhaps reflect some other aspect of the particle. Which of the following is a real suggestion that we reported on 24 March?

























Continue reading page

|1

|2



























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.




































All comments should respect the New Scientist House Rules. If you think a particular comment breaks these rules then please use the "Report" link in that comment to report it to us.


If you are having a technical problem posting a comment, please contact technical support.








Read More..

Today on New Scientist: 21 December 2012







Cadaver stem cells offer new hope of life after death

Stem cells can be extracted from bone marrow five days after death to be used in life-saving treatments



Apple's patents under fire at US patent office

The tech firm is skating on thin ice with some of the patents that won it a $1 billion settlement against Samsung



Himalayan dam-building threatens endemic species

The world's highest mountains look set to become home to a huge number of dams - good news for clean energy but bad news for biodiversity



Astrophile: Black hole exposed as a dwarf in disguise

A white dwarf star caught mimicking a black hole's X-ray flashes may be the first in a new class of binary star systems



Blind juggling robot keeps a ball in the air for hours

The robot, which has no visual sensors, can juggle a ball flawlessly by analysing its trajectory



Studio sessions show how Bengalese finch stays in tune

This songbird doesn't need technological aids to stay in tune - and it's smart enough to not worry when it hears notes that are too far off to be true



Giant tooth hints at truly monumental dinosaur

A lone tooth found in Argentina may have belonged to a dinosaur even larger than those we know of, but what to call it?



Avian flu virus learns to fly without wings

A strain of bird flu that hit the Netherlands in 2003 travelled by air, a hitherto suspected by unproven route of transmission



Feedback: Are wind turbines really fans?

A tale of "disease-spreading" wind farms, the trouble with quantifying "don't know", the death of parody in the UK, and more



The link between devaluing animals and discrimination

Our feelings about other animals have important consequences for how we treat humans, say prejudice researchers Gordon Hodson and Kimberly Costello



Best videos of 2012: First motion MRI of unborn twins

Watch twins fight for space in the womb, as we reach number 6 in our countdown of the top videos of the year



2012 Flash Fiction winner: Sleep by Richard Clarke

Congratulations to Richard Clarke, who won the 2012 New Scientist Flash Fiction competition with a clever work of satire



Urban Byzantine monks gave in to temptation

They were supposed to live on an ascetic diet of mainly bread and water, but the monks in 6th-century Jerusalem were tucking into animal products



The pregnant promise of fetal medicine

As prenatal diagnosis and treatment advance, we are entering difficult ethical territory



2013 Smart Guide: Searching for human origins in Asia

Africa is where humanity began, where we took our first steps, but those interested in the latest cool stuff on our origins should now look to Asia instead



The end of the world is an opportunity, not a threat

Don't waste time bemoaning the demise of the old order; get on with building the new one



Victorian counting device gets speedy quantum makeover

A photon-based version of a 19th-century mechanical device could bring quantum computers a step closer



Did learning to fly give bats super-immunity?

When bats first took to the air, something changed in their DNA which may have triggered their incredible immunity to viruses



Van-sized space rock is a cosmic oddball

Fragments from a meteor that exploded over California in April are unusually low in amino acids, putting a twist on one theory of how life on Earth began




Read More..

Today on New Scientist: 21 December 2012







Cadaver stem cells offer new hope of life after death

Stem cells can be extracted from bone marrow five days after death to be used in life-saving treatments



Apple's patents under fire at US patent office

The tech firm is skating on thin ice with some of the patents that won it a $1 billion settlement against Samsung



Himalayan dam-building threatens endemic species

The world's highest mountains look set to become home to a huge number of dams - good news for clean energy but bad news for biodiversity



Astrophile: Black hole exposed as a dwarf in disguise

A white dwarf star caught mimicking a black hole's X-ray flashes may be the first in a new class of binary star systems



Blind juggling robot keeps a ball in the air for hours

The robot, which has no visual sensors, can juggle a ball flawlessly by analysing its trajectory



Studio sessions show how Bengalese finch stays in tune

This songbird doesn't need technological aids to stay in tune - and it's smart enough to not worry when it hears notes that are too far off to be true



Giant tooth hints at truly monumental dinosaur

A lone tooth found in Argentina may have belonged to a dinosaur even larger than those we know of, but what to call it?



Avian flu virus learns to fly without wings

A strain of bird flu that hit the Netherlands in 2003 travelled by air, a hitherto suspected by unproven route of transmission



Feedback: Are wind turbines really fans?

A tale of "disease-spreading" wind farms, the trouble with quantifying "don't know", the death of parody in the UK, and more



The link between devaluing animals and discrimination

Our feelings about other animals have important consequences for how we treat humans, say prejudice researchers Gordon Hodson and Kimberly Costello



Best videos of 2012: First motion MRI of unborn twins

Watch twins fight for space in the womb, as we reach number 6 in our countdown of the top videos of the year



2012 Flash Fiction winner: Sleep by Richard Clarke

Congratulations to Richard Clarke, who won the 2012 New Scientist Flash Fiction competition with a clever work of satire



Urban Byzantine monks gave in to temptation

They were supposed to live on an ascetic diet of mainly bread and water, but the monks in 6th-century Jerusalem were tucking into animal products



The pregnant promise of fetal medicine

As prenatal diagnosis and treatment advance, we are entering difficult ethical territory



2013 Smart Guide: Searching for human origins in Asia

Africa is where humanity began, where we took our first steps, but those interested in the latest cool stuff on our origins should now look to Asia instead



The end of the world is an opportunity, not a threat

Don't waste time bemoaning the demise of the old order; get on with building the new one



Victorian counting device gets speedy quantum makeover

A photon-based version of a 19th-century mechanical device could bring quantum computers a step closer



Did learning to fly give bats super-immunity?

When bats first took to the air, something changed in their DNA which may have triggered their incredible immunity to viruses



Van-sized space rock is a cosmic oddball

Fragments from a meteor that exploded over California in April are unusually low in amino acids, putting a twist on one theory of how life on Earth began




Read More..

Today on New Scientist: 21 December 2012







Cadaver stem cells offer new hope of life after death

Stem cells can be extracted from bone marrow five days after death to be used in life-saving treatments



Apple's patents under fire at US patent office

The tech firm is skating on thin ice with some of the patents that won it a $1 billion settlement against Samsung



Himalayan dam-building threatens endemic species

The world's highest mountains look set to become home to a huge number of dams - good news for clean energy but bad news for biodiversity



Astrophile: Black hole exposed as a dwarf in disguise

A white dwarf star caught mimicking a black hole's X-ray flashes may be the first in a new class of binary star systems



Blind juggling robot keeps a ball in the air for hours

The robot, which has no visual sensors, can juggle a ball flawlessly by analysing its trajectory



Studio sessions show how Bengalese finch stays in tune

This songbird doesn't need technological aids to stay in tune - and it's smart enough to not worry when it hears notes that are too far off to be true



Giant tooth hints at truly monumental dinosaur

A lone tooth found in Argentina may have belonged to a dinosaur even larger than those we know of, but what to call it?



Avian flu virus learns to fly without wings

A strain of bird flu that hit the Netherlands in 2003 travelled by air, a hitherto suspected by unproven route of transmission



Feedback: Are wind turbines really fans?

A tale of "disease-spreading" wind farms, the trouble with quantifying "don't know", the death of parody in the UK, and more



The link between devaluing animals and discrimination

Our feelings about other animals have important consequences for how we treat humans, say prejudice researchers Gordon Hodson and Kimberly Costello



Best videos of 2012: First motion MRI of unborn twins

Watch twins fight for space in the womb, as we reach number 6 in our countdown of the top videos of the year



2012 Flash Fiction winner: Sleep by Richard Clarke

Congratulations to Richard Clarke, who won the 2012 New Scientist Flash Fiction competition with a clever work of satire



Urban Byzantine monks gave in to temptation

They were supposed to live on an ascetic diet of mainly bread and water, but the monks in 6th-century Jerusalem were tucking into animal products



The pregnant promise of fetal medicine

As prenatal diagnosis and treatment advance, we are entering difficult ethical territory



2013 Smart Guide: Searching for human origins in Asia

Africa is where humanity began, where we took our first steps, but those interested in the latest cool stuff on our origins should now look to Asia instead



The end of the world is an opportunity, not a threat

Don't waste time bemoaning the demise of the old order; get on with building the new one



Victorian counting device gets speedy quantum makeover

A photon-based version of a 19th-century mechanical device could bring quantum computers a step closer



Did learning to fly give bats super-immunity?

When bats first took to the air, something changed in their DNA which may have triggered their incredible immunity to viruses



Van-sized space rock is a cosmic oddball

Fragments from a meteor that exploded over California in April are unusually low in amino acids, putting a twist on one theory of how life on Earth began




Read More..

The end of the world is an opportunity, not a threat






















Don't waste time bemoaning the demise of the old order; get on with building the new one
















Read more: "2013 Smart Guide: 10 ideas that will shape the year"












A FEW days ago, a woman called New Scientist's subscription desk with an unusual question. Was it true that the world would end in a week's time? She was worried about her young relatives: "They don't deserve to die," she told our sympathetic, if nonplussed, representative.











Our usual response to such enquiries is to say there's about as much reason to expect the world to end this week as any other, which is to say: not much ("Countering the new horsemen of the apocalypse", New Scientist, 1 December, p 5). But surprising numbers of people think otherwise. In a recent poll by the US Public Religion Research Institute (PRRI), about 2 per cent of people said they expected the world to end before 2012 does; 15 per cent - many of them evangelical Christians - said the end would come in their lifetimes.












Most of us are jokier about prophecies of doom, but still subject to deep-seated anxiety about what the future will bring. The order of things has crumbled in recent years. But we should relish, rather than fear, the challenge of rebuilding it. After all, apocalyptic thinking is also about renewal: those waiting for the world to end usually expect a better one to take its place ("The end is always nigh in the human mind", New Scientist, 4 June 2011, p 30).












There is certainly cause for concern. Struggling western economies eye the fate of Greece uneasily. Democracy's birthplace has plunged abruptly from apparent affluence to penury. Nor are its problems confined to its borders: its economic crisis is turning into a continent-wide public health problem, with long-vanquished "tropical" diseases staging a troubling comeback ("Greek crisis: How to prevent a humanitarian disaster", New Scientist, 26 May, p 6).












There's better news on the global scale - although it still has its befuddling features. The Global Burden of Disease report released last week shows life expectancies to have risen significantly around the world over the past 40 years - but we now die of different causes, from AIDS to traffic accidents. Strikingly, excess weight is now a bigger global health problem than undernutrition (see "Overeating now bigger global problem than lack of food").













And the general increase in living standards is being thrown into doubt by climate change, which is becoming more serious, more quickly, than most feared ("Climate change: It's even worse than we thought", New Scientist, 17 November, p 34). Thankfully, public acceptance of the problem seems also to be on the rise. Some 6 out of 10 people in the PRRI poll think the severity of recent natural disasters is evidence of global climate change. That's a bolder link than most scientists would make. But then again, more than a third of those polled took such disasters as evidence of the end of the world.












This is a deeply unhelpful reaction. Our species has certainly made a mess of the atmosphere, and it will take immense efforts to sort it out. But we are capable of them. It's our species that built a huge machine to test our theories of the universe's finest workings. It's also our species that this year winched a giant robot down to the surface of another planet to see what's there. And beyond sating our curiosity, it's our species that's cut the death rate in our under-5s by 60 per cent in 20 years.












So yes, the world is complicated, and the challenges we face are enormous. But we mustn't just throw up our hands in despair: all the ingenuity and determination we can muster will be needed. We have to believe that we can make the world a better place, and act to make it one. We shouldn't view the end of the old world as a threat - but as an opportunity.
























































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.




































All comments should respect the New Scientist House Rules. If you think a particular comment breaks these rules then please use the "Report" link in that comment to report it to us.


If you are having a technical problem posting a comment, please contact technical support.








Read More..

Fail-safe software could stop flash crashes









































HIGH-FREQUENCY trading algorithms are seriously profitable. But they are also a serious problem, leading to mysterious "flash crashes" on the world's financial markets. So would emergency fail-safes of the kind used to prevent medical robots and nuclear reactors going haywire be any help?












Philip Bond, a computer scientist at the University of Bristol, UK, thinks so. At present, suspicious trading at an exchange can be stopped by a catch-all "market halt", but that's often too late: what is needed is a reliable way of sensing when wild stock-price variations suggest a build-up to a crash. At that point a smart circuit breaker could step in, Bond told a London meeting of the Centre for the Study of Financial Innovation on 11 December.












The idea is to avoid another debacle like the flash crash of 6 May 2010, when $10 trillion was briefly knocked off the Dow Jones Industrial Average after a trading firm's high-frequency algorithm went awry. Prices mostly recovered in a matter of minutes, but the turbulence caused slumps in stock prices around the globe.












High-speed traders have a distinct advantage over traditional investors, according to research by Andrei Kirilenko, chief economist at the US Commodity Trading Futures Commission, and his colleagues. Kirilenko presented the findings on 30 November at the National Bureau of Economic Research's Market Microstructure Meeting. This skewed playing field might increase market instability even more.












Because high-frequency trading algorithms (HFTs) can work at blistering speeds - a trade every 60 microseconds is common - a lot can happen before humans have a chance to intervene. This has left governments scrambling to come up with ways to regulate the practice. The European Parliament is considering legislation that could force traders to increase trading intervals to a "safer" half a second.












But Bond and his colleagues, who examined the risks of high-speed trading for the UK government, say that enforcing a delay is wrong-headed. Making algorithms wait half a second would stop them from reacting to breaking financial news and render them useless.












Instead, they propose using circuit-breaker algorithms that will trip when trading becomes erratic. Such software monitors systems like medical robots and nuclear reactors for potentially dangerous behaviour. "HFT circuit breakers need to be considered as very high reliability software engineered to work under stressed conditions and with multiple backups," he says.


















A decision is needed fast. The proportion of high frequency trades has declined in the US in recent years as they have lost some of their initial edge, but they still account for a majority of trades. And the hardware needed to get in the game is becoming more accessible - a server running a high-speed system costs only $270,000, and prices will keep falling.












Any technical backstops will have to distinguish between algorithms gone haywire and simple bad decision-making, warns Fod Barnes, an economist with UK consultants Oxera. "The HFT system is a bit more complex than just engineering," he says. "Why should those who manage to write an algorithm that makes a series of very bad trades be protected from their own folly?"




















































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.




































All comments should respect the New Scientist House Rules. If you think a particular comment breaks these rules then please use the "Report" link in that comment to report it to us.


If you are having a technical problem posting a comment, please contact technical support.








Read More..