Slashdot Mirror

New calculations show how to make an electromagnetic "wormhole" — a tube that is invisible from the sides but allows light to shine down the center. The practical applications are a ways off, as even the design of a spherical invisibility cloak has not advanced beyond working (in theory) for a single wavelength of visible light.

Roland Piquepaille writes to let us know about research into producing palpable maps for the blind. Scientific American has the story of Greek researchers who produce 3D "haptic" maps that "use force fields to represent walls and roads so the visually impaired can better understand the layout of buildings and cities." Two separate systems produce haptic output from standard video and from 2D maps. The systems have been tested on a small number of users. Currently the devices that interpret the "force fields" for sight-impaired users are not portable, and so the systems are most appropriate for doing research before, e.g., visiting a new city.

ThanatosMinor writes "In a 5-4 decision today, the U.S. Supreme Court ruled that the EPA has the authority to regulate carbon dioxide emissions, saying that the EPA's reasons for not doing so in the past were 'arbitrary, capricious or otherwise not in accordance with law.' The ruling does not require the EPA to regulate carbon. But concerns about global climate change and its ties to human activity did appear to be deciding factors in the case." The AP coverage stresses that the ruling upholds the right of states to sue the Federal government over issues of global warming.

gandracu writes "It appears that a variety of genetically modified maize produced by Monsanto is toxic for the liver and kidneys. What's worse, Monsanto knew about it and tried to conceal the facts in its own publications. Greenpeace fought in court to obtain the data and had it analyzed by a team of experts. MON863, the variety of GM maze in question, has been authorized for markets in the US, EU, Australia, Canada, China, Japan, Mexico, and the Philippines. Here are Greenpeace's brief on the study and their account of how the story was unearthed (both PDFs)."

evil agent passes along an article in Scientific American reporting that new radiocarbon dating techniques have cast doubt on the accepted story of how the Americas were populated. In the traditional view, "[M]igrants out of northeast Asia slipped into the Americas bearing finely shaped stone projectiles, so-called 'Clovis points,' after the town in New Mexico where they were first uncovered. This Clovis culture rapidly spread throughout the empty continents and by 1,000 years after their arrival had reached the southernmost tip of what is now South America, making them the original ancestors of indigenous Americans." The new dating of Clovis sites suggests that "Clovis" was not a people, but rather a technology. That is, a new and more efficient method of making arrowheads for hunting spread rapidly through a pre-existing population in both North and South America, over at most 350 years.

Scientific American has an article on Gordon Bell's 9-year-long experiment of recording great swaths of his life on digital media. The idea harks back to an article by Vannevar Bush in the 1940s, which arguably presaged hypertext and the Web as well. Bell, the father of the VAX computer and now with Microsoft Research, first published a paper on his experiment in CACM in 2001. The goal is to record "all of Bell's communications with other people and machines, as well as the images he sees, the sounds he hears and the Web sites he visits." Storage requirements are estimated at a modest 18 GB a year, 1.1 TB over a 60-year span. Not a lot if the article's projection comes to pass — that we will all be walking around with 1 TB of storage in our portable devices by 2015. The article is co-authored by Jim Gemmell, who wrote the software for the MyLifeBits project.

prostoalex writes "Canadian company D-Wave Systems is getting some technology press buzz after successfully demonstrating their quantum computer (discussed here earlier) that the company plans to rent out. Scientific American has a more technical description of how the quantum computer works, as well as possible areas of application: 'The quantum computer was given three problems to solve: searching for molecular structures that match a target molecule, creating a complicated seating plan, and filling in Sudoku puzzles.' Another attendee provides some videos from the demo." Anyone want to guess how long before "qubit" gets compressed to "quit" (as "bigit" became "bit" in the last century)?

mstaj noted that Bill Gates has an article in January edition of Scientific American A Robot in Every Home."Imagine being present at the birth of a new industry. It is an industry based on groundbreaking new technologies, wherein a handful of well-established corporations sell highly specialized devices for business use and a fast-growing number of start-up companies produce innovative toys, gadgets for hobbyists and other interesting niche products. But it is also a highly fragmented industry with few common standards or platforms. Projects are complex, progress is slow, and practical applications are relatively rare. In fact, for all the excitement and promise, no one can say with any certainty when — or even if — this industry will achieve critical mass. If it does, though, it may well change the world."

Benjamin Long writes to note a study, by a team of neuroscientists and engineers, that demonstrated that humans can follow a scent trail — an ability that most had assumed only animals possessed. Furthermore, the study demonstrated for the first time that humans make use of differential information from the two nostrils. The researchers blindfolded college students who crawled through grass to sniff out a chocolate-scented trail. Here is the abstract of the paper in Nature Neuroscience. From the article: "The humans, however, still sniffed much more slowly than dogs, which may partially account for canines' greater efficiency at scent tracking. [A commentator] says that despite their relatively sluggish speed, the fact that subjects improved with training is noteworthy. 'I think that shows the effect of our distinctively different behavior in actually using this sense,' he says. 'The dog [has] been doing this its whole life, and humans [were] just asked to plunge in the first time they've ever done it.'"

eldavojohn writes "An academic paper on math [PDF] has been released by Paul Bressloff, resulting in much ado about the mathematical modeling of the brain's memory storage. The paper deals with specific receptors called AMPA and how memories are held while synapses still fire. Scientific American is running a more detailed report on the subject." From the article "At any given time, some AMPA receptors are moving inside the nerve cell where they are unable to receive signals. But to maintain memory, a number of AMPA receptors are anchored in place with what are known as scaffolding proteins, Bressloff said. The computer models examined how many AMPA receptors are anchored at the receiving area on the surface as opposed to those found elsewhere in the nerve cell. The more AMPA receptors that are anchored in place, the stronger the synapse."

brian0918 writes "Multiple news sites are reporting that levels of the second most important greenhouse gas, methane, have stabilized". From Scientific American: "During the two decades of measurements, methane underwent double-digit growth as a constituent of our atmosphere, rising from 1,520 parts per billion by volume (ppbv) in 1978 to 1,767 ppbv in 1998. But the most recent measurements have revealed that methane levels are barely rising anymore — and it is unclear why." From NewScientist: "Although this is good news, it does not mean that methane levels will not rise again, and that carbon dioxide remains the 800-pound gorilla of climate change."

dptalia writes "It's that time of year again, where everyone is putting out their best of 2006 lists. Last week, Popular Science did it, and today, Scientific American has released their top 50 list. Of note are improvements in RFID technology, discoveries in nantechnology, and net neutrality."

dptalia writes "It's that time of year again, where everyone is putting out their best of 2006 lists. Last week, Popular Science did it, and today, Scientific American has released their top 50 list. Of note are improvements in RFID technology, discoveries in nantechnology, and net neutrality."

dptalia writes "It's that time of year again, where everyone is putting out their best of 2006 lists. Last week, Popular Science did it, and today, Scientific American has released their top 50 list. Of note are improvements in RFID technology, discoveries in nantechnology, and net neutrality."

dptalia writes "It's that time of year again, where everyone is putting out their best of 2006 lists. Last week, Popular Science did it, and today, Scientific American has released their top 50 list. Of note are improvements in RFID technology, discoveries in nantechnology, and net neutrality."

dptalia writes, "For decades scientist have thought that the moon has been 'dead' for about 1 to 3 billion years. However, new research points to the idea that the moon may have been volcanically active as recently as 1 million years ago. In fact, NASA geophysicist Paul Lowman believes the moon's core is still molten."

doug141 writes to point out a Reuters story on the attention tax authorities are beginning to focus on virtual economies. From the article: "Users of online worlds such as Second Life and World of Warcraft transact millions of dollars worth of virtual goods and services every day... People who cash out of virtual economies by converting their assets into real-world currencies are required to report their incomes to the U.S. Internal Revenue Service or the tax authority where they live in the real world... 'Right now we're at the preliminary stages of looking at the issue and what kind of public policy questions virtual economies raise — taxes, barter exchanges, property and wealth,' said Dan Miller, senior economist for the Joint Economic Committee of the U.S. Congress."

uncleO writes "The current issue of Scientific American has an interesting article, Impact from the Deep, about the possible causes for the five major global extinctions. It contends that only the most recent one was caused by a 'dinosaur killer' asteroid impact. Evidence suggests that the others were caused by 'great bubbles of toxic H2S gas erupting into the atmosphere' from the oceans due to anoxia." From the article: "The so-called thermal extinction at the end of the Paleocene began when atmospheric CO2 was just under 1,000 parts per million (ppm). At the end of the Triassic, CO2 was just above 1,000 ppm. Today with CO2 around 385 ppm...climbing at an annual rate of 2 ppm...to 3 ppm, levels could approach 900 ppm by the end of the next century."

DustCollector writes to mention a Scientific American blog post about the highly successful Star Trek auction at Christie's on Thursday. The props, from many different shows, went for far more than was estimated. From the article: "The auction board flickered in perpetual motion as dollars changed along with the equivalent in euros, British pounds, Hong Kong dollars and Japanese yen (what, no quatloos?). Picard's Enterprise-E captain's chair, estimated to sell for $7,000-$8,000, went for $52,000. Two prop wine bottles of 'Chateau Picard,' estimated to go for $500 to $700, sold for $5,500. 'That's probably a record for empty wine bottles,' the auctioneer quipped. The sale prices so exceeded the estimated price that absentee bidders--those who place a maximum and hope for the best--hardly stood a chance: I counted only two successful absentee bids in the first 124 lots."

BlueCup writes "Dozens of fossils of an ancient loon-like creature that some say is the missing link in bird evolution have been discovered in northwest China. The remains of 40 of the nearly modern amphibious birds, so well-preserved that some even have their feathers, were found in Gansu province, researchers report in Friday's issue of the journal Science. Previously only a single leg of the creature, known as Gansus yumenensis, had been found."

blonde rser writes "This weeks Scientific American Podcast plays excerpts from NYC Mayor Michael Bloomberg's commencement address at John Hopkins University (text and video can be found online). Once he gets past the standard pomp and circumstance he makes a strong, pro-science speech. It is impressive how he very directly demonizes those that would politicize stem cell research, global warming, Terry Schaivo, and evolution." From the speech: "Hopkins' motto is 'Veritas vos liberabit' - 'the truth shall set you free' - not that 'you shall be free to set the truth!'" Stirring stuff.

linguizic writes "According to Scientific American Online: '10 month olds can learn to associate words with objects in their environment when given interesting enough stimuli. A two-year-old can quickly link an object--whether a flashy rattle or a boring latch--to a word. Even a one-year-old can follow a parent's gaze to an object and match it with a word being spoken. But although anecdotal evidence seems to show that babies younger than one year can learn words, it remains unclear whether they are in fact mastering language. Now a new study reveals that 10-month-old infants can link words and objects, but only if the object is already interesting to them.'"

linguizic writes "According to Scientific American, global warming could be creating stronger hurricanes: 'Since the 1970s, ocean surface temperatures around the globe have been on the rise--from one half to one degree Fahrenheit, depending on the region. Last summer, two studies linked this temperature rise to stronger and more frequent hurricanes. Skeptics called other factors into account, such as natural variability, but a new statistical analysis shows that only this sea surface temperature increase explains this trend.'"

gokulpod writes "Scientific American reports that a family of animals known as Diatomyidae thought to have been dead for 11 million years has been discovered in Laos. From the article: 'Fossilized remnants of this group have been found throughout Asia with a distinctive jaw structure and molars. It represents a rare opportunity to compare assumptions derived from the fossil record and an actual living specimen to determine overall accuracy of the techniques involved. This discovery also provides a compelling argument for preservation efforts in Southeast Asia.'"

ScentCone writes "Pennies, pipes, untold miles of CAT5 - they tie up a lot of copper. Unlike abundant iron and aluminum, copper is relatively scarce. But it's vital to electricity generation/transmission, plumbing, and other uses central to a modern standard of living. Scientific American is providing a quick overview of the situation. They report the conclusion that there simply isn't enough available. Canada, Mexico and the US average 170kg of copper use per person, and the most generous estimates suggest that only 1.6 billion unused metric tons exist. More reclamation and use of fiber, wireless, and PVC helps - but won't be enough to cover the billions of people who don't yet live in highly wired/mechanized societies."

norburym writes "Peter Morville is an information architect, an advocate of expanding the boundaries of librarianship in an Internet age and the voice of ambient findability. In this new book from O'Reilly, Morville expands on a theme he's been discussing for several years: we live in an age where computers and the Internet are changing how we access information. Digital networks are available everywhere. As users, we have computers, PDAs, GPS units, smartphones, software and other network technologies that enable constant and mobile connectivity. As Morville writes, ambient findability is "a realm in which we can find anyone or anything from anywhere at anytime" and his book is a thought provoking chronicle of the advent of that goal." Read the rest of Mary's review. Ambient Findability author Peter Morville pages 204 publisher O'Reilly Media rating 9 reviewer Mary Norbury-Glaser ISBN 0596007655 summary Information retrieval in an age of ubiquitous computing.

Ambient Findability is divided into seven sections that track the journey from simply defining what the author means by findability through a history of man's search for location awareness in both the physical environment and in the cyber world; how we interact with information through documents, language, and systems of retrieval; intertwingularity and findable objects; the balance between push (advertising) and pull (information retrieval); being a Web designer and a user advocate; metadata and physical data in the context of findability; and the ability to make informed decisions based on open source and emerging technology.

A core definition offered by the author in Chapter 1 is for findability: "the quality of being locatable or navigable; the degree to which a particular object is easy to discover or locate; the degree to which a system or environment supports navigation and retrieval." Morville discusses how well various websites perform in providing information desired by the user and how successful sites cater to mass customization. Businesses and non-profits that aim to reduce search time and improve findability of their site contents will gain marketplace advantage.

Chapter 2 is an interesting and informative introduction to the history of wayfinding through lessons learned from various animal species (exocentric and egocentric navigation, echolocation, etc.) to how humans have adapted landmarks or created tools to aid in navigation and exploration (lighthouses, compasses, sextants, maps, etc.) and further how architects and urban planners can effectively design built environments. The logical extension of this discussion is how the wayfinding techniques developed in the physical world have translated to the digital realm. In this discussion, we see how we have translated our spatial metaphors to the web.

This leads directly to the next chapter, on how people interact with information. Morville tackles the difficult task of defining information and considers the concept of relevance in relationship to the information we seek to retrieve from the Internet and how the inherent ambiguity of language negatively impacts any system of information retrieval. To top this off, the author reminds us that users themselves introduce added complexity and complication to how people seek information. He cites several research studies and literature on the subject and suggests that there is value in integrating both push and pull in how we interact with information systems.

Chapter 4 deals with the topic of intertwingularity (a combination of "intertwined" and "mingled") or the idea that things are connected together in a complex and nonlinear way. In terms of the Internet and ubiquitous computing, this translates into our ability to connect to disparate bits of data not only from computers but also from mobile devices and other ambient devices (GPS, EZPass, pagers, RFIDs) that are truly pervasive throughout society. Morville takes us through part two of wayfinding with descriptions of GPS technology, interactive mapping and photographic confluence sites, tracking using GPS and cellular communication, RFID, webcams, and of course the convergence of technology as wearable computing (sunglasses that can be used with cell phones and MP3 devices, Bluetooth enabled garments, cameras embedded in glasses, etc.) becomes more common and affordable.

Morville then leads us neatly back to the idea of push and pull. In chapter 5, he discusses the necessary flow toward balance and uses the example of Google, which successfully intertwingles unobtrusive targeted ads with search results. Design and marketing, as the author notes, are not enemies. Yet finding the balance is tricky and not a simple task. Morville describes his "user experience honeycomb" model which combines the key issues that designers should consider when creating a website that optimizes findability and therefore enhances user experience: useful, usable, desirable, findable, accessible, credible, and valuable. He concludes the chapter with hacks that improve web findability: adopting search engine optimization techniques (avoid drop down menus, image maps, frames, etc.; use RSS feeds with backlinks; embrace web standards; determine and include keywords and phrases in visible body text, links, headers, tags, etc.), and personalization (examples include Yahoo! using individual profiles to customize sports scores and stock information, the Weather Channel using zip codes for local weather, and Google Alerts letting users track keywords in news and web sites).

In chapter 6, "The Sociosemantic Web," Morville outlines the controversy surrounding an article, "The Semantic Web," that appeared in May 2001 in the Scientific American. The authors of the article propose an ambitious "road map for future Web design" that subsequently fueled a debate between W3C Semantic Web members and social software supporters. The debate leads to a discussion about how well metadata can be normalized in an environment such as the Web. Morville uses this debate as an introduction to a history and structural description of metadata. He describes the formulation of taxonomies and the use of controlled vocabularies to enable findability. Of course, web sites are not simply hierarchical; they are complexly grouped which brings us to the idea of folksonomies where users tag objects with one or more keywords that become shared. Folksonomies are obviously not great for findability since they fail at semantic relationships and hierarchy. However, all forms of structure (folksonomies, ontologies, and taxonomies) can co-exist on the Web to describe metadata and the differences between data and metadata are becoming less distinct. Amazon is a perfect example of this: traditional publication and topic details and concordance are documented along with customer reviews and rankings. Amazon also has the option to "search inside this book" which makes the pages and even the text itself become metadata.

The final chapter of the book delves into how we are ultimately capable of making informed decisions through the power of the Internet: the sheer volume and variety of sources available to us and the ease of access enable us to take charge of decisions we would normally trust to those professionals outside of our narrow realm of expertise. We decide which information to believe in. Morville considers information literacy and digital librarianship and proffers the idea that libraries and the Internet have common principles of maintaining free expression, privacy, free and equal access, and intellectual freedom.

Tim O'Reilly is well known for expanding the boundaries of technology in print and through conferences like the Emerging Technology Conference, the Web 2.0 Conference, and the Open Source Convention held in both the US and in Europe. His agenda has never been to fill convention halls with attendees who fit a lowest common denominator; his aim has been to bring together people who not only think smart but who also have the ability to think outside the normal boundaries of their particular field of interest (Robert J. Lang, Freeman Dyson, James Gosling, among others) and who therefore inspire innovation. With the publication of Ambient Findability, O'Reilly Media continues this tradition of giving readers an opportunity to experience the visionary writing of people like Peter Morville.

Read Ambient Findability if: you are interested in expanding your business or nonprofit through its presence on the Internet; you are a librarian and want to grow into the nontraditional environment of the Web; you are a Web designer and want to optimize the findability of your sites on the Internet; you are a user and want to enhance your searching experience. Read this book if you are a teacher, a student, a writer, a parent...in short, if you use a computer or a handheld or a GPS or a smartphone or any type of technology that connects you to the world, then you should read this book. Peter Morville's Ambient Findability will amaze and delight you. It will give you new insight into how ubiquitous computing is affecting how we find and use information and how we, as users, can and will shape the future of how data is stored and retrieved.

Mary Norbury-Glaser is IT Director at the Barbara Davis Center, an affiliate center at the University of Colorado Health Sciences Center in Denver."

You can purchase Ambient Findability from bn.com. Slashdot welcomes readers' book reviews -- to see your own review here, read the book review guidelines, then visit the submission page.

FruFox writes "A recent study has pointed to a possible link between autism and lack of so-called 'mirror neurons' , either physically or functionally. This provides the first solid physical evidence to back up the theory that autism's root cause is a profound lack of empathy. This probably impacts the world of Asperger's Syndrome as well. Many Slashdot readers are undoubtedly familiar with the world of Asperger's / autism."

Pedrito writes "Scientific American is running a story in this month's issue about preparing for a flu pandemic. What this article tries to convey is that a pandemic is definitely coming. Whether it's from the H5N1 strain (which would likely cause hundreds of millions of deaths) or another strain a few years down the road. There have been 3 other flu pandemics in the past 100 years. The 1918 strain being the worst, with 40 million killed. The reason H5N1 is being followed so closely is because it's already spread to people and because it's incredibly lethal (a roughly 50% fatality rate at th moment). Even if the fatality rate dropped to 5% when and if it mutates into an easily communicable form, it would be twice as deadly as the 1918 virus."

Phil Shapiro writes "With the cost of hurricane Katrina running as high as $100 billion, the thought of trying to control the severity of hurricanes should be mulled. Dissipating the energy of hurricanes as they're forming might be within the range of the feasible. Scientific American tackles this topic in an article last year, as does this crank. (I admit the crank is me.) Is this type of thing feasible, or is it best not even tried at all?"

TheBackBencher writes "Scientific American today has a very interesting article about "Stopping Spam" by Joshua Goodman, David Hackerman and Robert Rounthwaite from Microsoft Research. They talk about different types of spam -- spam with emails, spam on IMs, spamlinks on web pages and image based spam. They mention different techniques for spam filtering mainly fingerprinting matching techniques, n grams model, naive bayesian approach, optical character recognition, challenge/response systems and Human Interacted Proofs (HIP) in a very lucid style. They however do not mention fingerprinting approach of using Nilsimsa Hash to tackle addition of random words by spammers in emails or hypertextus interruptus technique used by spammers of splitting words using HTML comments, pairs of zero width tags, or bogus tags. Also, Spam-Research is reporting the SplitFit Technique that Spammers are using to fool Yahoo! Mail SpamGuard."

IvyMike writes "The April issue Scientific American opens with a Perspectives column titled Okay, We Give Up. It opens, 'For years, helpful letter writers told us to stick to science. They pointed out that science and politics don't mix. They said we should be more balanced in our presentation of such issues as creationism, missile defense and global warming. We resisted their advice and pretended not to be stung by the accusations that the magazine should be renamed Unscientific American, or Scientific Unamerican, or even Unscientific Unamerican. But spring is in the air, and all of nature is turning over a new leaf, so there's no better time to say: you were right, and we were wrong.'"

Dotnaught writes "Scientific American has an intriguing story about EpiSims, an outbreak simulator. Designed by Los Alamos National Laboratory (LANL), it deals with a social networking of a different sort: 'To understand what a social network really is and how it can be used for epidemiology, imagine the daily activities and contacts of a single hypothetical adult, Ann. She has short brushes with family members during breakfast and then with other commuters or carpoolers on her way to work. Depending on her job, she might meet dozens of people at work, with each encounter having a different duration, proximity and purpose.'"

Dotnaught writes "Scientific American has an intriguing story about EpiSims, an outbreak simulator. Designed by Los Alamos National Laboratory (LANL), it deals with a social networking of a different sort: 'To understand what a social network really is and how it can be used for epidemiology, imagine the daily activities and contacts of a single hypothetical adult, Ann. She has short brushes with family members during breakfast and then with other commuters or carpoolers on her way to work. Depending on her job, she might meet dozens of people at work, with each encounter having a different duration, proximity and purpose.'"

prostoalex writes "Scientific American is seeking better Web searches. They report on all sorts of innovations happening outside the Google-Yahoo-MSN zone that the press is usually reporting on, including GPS-enhanced searches from University of Maryland, Shape Retrieval and Analysis from Princeton, musical search engine from New Zealand Digital Library Project, and some of the projects that A9 and Ask.com have been working on."

prostoalex writes "Scientific Americans looks into the human brain, trying to figure out why some events just tend to stick in our memories forever, while the others are gone: "How does a gene "know" when to strengthen a synapse permanently and when to let a fleeting moment fade unrecorded? And how do the proteins encoded by the gene "know" which of thousands of synapses to strengthen? The same questions have implications for understanding fetal brain development, a time when the brain is deciding which synaptic connections to keep and which to discard. In studying that phenomenon, my lab came up with an intriguing solution to one of these mysteries of memory.""

prostoalex writes "Scientific American claims that advances in commercially available quantum encryption might obsolete the existing factorization-based solutions: "The National Security Agency or one of the Federal Reserve banks can now buy a quantum-cryptographic system from two small companies - and more products are on the way. This new method of encryption represents the first major commercial implementation for what has become known as quantum information science, which blends quantum mechanics and information theory. The ultimate technology to emerge from the field may be a quantum computer so powerful that the only way to protect against its prodigious code-breaking capability may be to deploy quantum-cryptographic techniques.""

museumpeace writes "Tired of fixing your computer? What if your system broke down two billion miles from the nearest spare part or human? NASA has just held a colloquium where Ulster University computer science researcher Roy Sterritt was invited to present his ideas on Autonomic Computing. In the last few years,the leading system vendors have realized 'There is no less than a crisis today in three areas: cost, availability and user experience.' There has been a fair amount of academic research since customers like NASA see in it the potential to make remotely operated complex systems sustainable. It all makes for some very cool systems design work and there are lots of further research opportunities. Just don't forget what it may do to your job."

CodeWanker writes "Scientific American is reporting that scientists in China have developed a better, faster way to screen foodstuffs for infectious agent contamination. Bind antibodies to flourescent silica bits, mix with your hamburger, and turn on the black lights. Hilarity ensues."

Roland Piquepaille writes "Several sources reported last week that a new technique that produces 3D holograms of handwriting could be used to detect fake signatures on checks, credit card receipts or other important handwritten documents. Here are pointers to Nature, Scientific American or BBC News Online. Instead of using 2D techniques to look at the sequence of pen strokes in a signature, this new method is based on 3D micro-profilometry which permits to translate the writing into an image showing dips and furrows of the sample so that anomalies can be detected. If you plan to imitate your spouse's signature, beware! Forensics have a new and very efficient tool. As an example, for the use of ballpoint pens on normal paper, the success rate was 100%. You'll find more details, references and pictures in this overview."

securitas writes "With the Athens 2004 Summer Olympics about to begin, games officials are on the lookout for the use of performance-enhancing drugs by athletes who want to gain an edge over their competitors. Scientific American's H. Lee Sweeney reports on sports officials who are looking to the near future with fear, anticipating a new, undetectable kind of doping that threatens to transform the fundamental nature of sports: gene doping (single-page view). The technology uses new 'therapies that give patients a synthetic gene, which can last for years, producing high amounts of naturally occurring muscle-building chemicals. The chemicals are indistinguishable from their natural counterparts and are only generated locally in the muscle tissue .... so officials will have nothing to detect in a blood or urine test.' The article from the July 2004 issue includes diagrams by Jen Christiansen on the importance of skeletal muscles that provide athletes' power and how gene doping works. Is the future of competitive sports an elite cadre of genetically engineered athletes?"

securitas writes "With the Athens 2004 Summer Olympics about to begin, games officials are on the lookout for the use of performance-enhancing drugs by athletes who want to gain an edge over their competitors. Scientific American's H. Lee Sweeney reports on sports officials who are looking to the near future with fear, anticipating a new, undetectable kind of doping that threatens to transform the fundamental nature of sports: gene doping (single-page view). The technology uses new 'therapies that give patients a synthetic gene, which can last for years, producing high amounts of naturally occurring muscle-building chemicals. The chemicals are indistinguishable from their natural counterparts and are only generated locally in the muscle tissue .... so officials will have nothing to detect in a blood or urine test.' The article from the July 2004 issue includes diagrams by Jen Christiansen on the importance of skeletal muscles that provide athletes' power and how gene doping works. Is the future of competitive sports an elite cadre of genetically engineered athletes?"

securitas writes "With the Athens 2004 Summer Olympics about to begin, games officials are on the lookout for the use of performance-enhancing drugs by athletes who want to gain an edge over their competitors. Scientific American's H. Lee Sweeney reports on sports officials who are looking to the near future with fear, anticipating a new, undetectable kind of doping that threatens to transform the fundamental nature of sports: gene doping (single-page view). The technology uses new 'therapies that give patients a synthetic gene, which can last for years, producing high amounts of naturally occurring muscle-building chemicals. The chemicals are indistinguishable from their natural counterparts and are only generated locally in the muscle tissue .... so officials will have nothing to detect in a blood or urine test.' The article from the July 2004 issue includes diagrams by Jen Christiansen on the importance of skeletal muscles that provide athletes' power and how gene doping works. Is the future of competitive sports an elite cadre of genetically engineered athletes?"

securitas writes "With the Athens 2004 Summer Olympics about to begin, games officials are on the lookout for the use of performance-enhancing drugs by athletes who want to gain an edge over their competitors. Scientific American's H. Lee Sweeney reports on sports officials who are looking to the near future with fear, anticipating a new, undetectable kind of doping that threatens to transform the fundamental nature of sports: gene doping (single-page view). The technology uses new 'therapies that give patients a synthetic gene, which can last for years, producing high amounts of naturally occurring muscle-building chemicals. The chemicals are indistinguishable from their natural counterparts and are only generated locally in the muscle tissue .... so officials will have nothing to detect in a blood or urine test.' The article from the July 2004 issue includes diagrams by Jen Christiansen on the importance of skeletal muscles that provide athletes' power and how gene doping works. Is the future of competitive sports an elite cadre of genetically engineered athletes?"

securitas writes "With the Athens 2004 Summer Olympics about to begin, games officials are on the lookout for the use of performance-enhancing drugs by athletes who want to gain an edge over their competitors. Scientific American's H. Lee Sweeney reports on sports officials who are looking to the near future with fear, anticipating a new, undetectable kind of doping that threatens to transform the fundamental nature of sports: gene doping (single-page view). The technology uses new 'therapies that give patients a synthetic gene, which can last for years, producing high amounts of naturally occurring muscle-building chemicals. The chemicals are indistinguishable from their natural counterparts and are only generated locally in the muscle tissue .... so officials will have nothing to detect in a blood or urine test.' The article from the July 2004 issue includes diagrams by Jen Christiansen on the importance of skeletal muscles that provide athletes' power and how gene doping works. Is the future of competitive sports an elite cadre of genetically engineered athletes?"

securitas writes "With the Athens 2004 Summer Olympics about to begin, games officials are on the lookout for the use of performance-enhancing drugs by athletes who want to gain an edge over their competitors. Scientific American's H. Lee Sweeney reports on sports officials who are looking to the near future with fear, anticipating a new, undetectable kind of doping that threatens to transform the fundamental nature of sports: gene doping (single-page view). The technology uses new 'therapies that give patients a synthetic gene, which can last for years, producing high amounts of naturally occurring muscle-building chemicals. The chemicals are indistinguishable from their natural counterparts and are only generated locally in the muscle tissue .... so officials will have nothing to detect in a blood or urine test.' The article from the July 2004 issue includes diagrams by Jen Christiansen on the importance of skeletal muscles that provide athletes' power and how gene doping works. Is the future of competitive sports an elite cadre of genetically engineered athletes?"

trifakir writes "Scientific American talks about the imperfections of the current patent law, subject to the book of two authors from the Harvard Business School. It seems that even business people start seeing the insanity of the current patent system. This time it seems that they are not only criticizing, but suggesting some procedural amendments (e.g. patent conflicts resolved by a judge and not by a jury). Do you think that any of these has chances being heard by the big wigs?"

trifakir writes "Scientific American talks about the imperfections of the current patent law, subject to the book of two authors from the Harvard Business School. It seems that even business people start seeing the insanity of the current patent system. This time it seems that they are not only criticizing, but suggesting some procedural amendments (e.g. patent conflicts resolved by a judge and not by a jury). Do you think that any of these has chances being heard by the big wigs?"

A reader writes: "In the June (paper) issue of Scientific American, there is a mini-article descibing the energy being wasted by power supplies in computers. Those things are only 60-70% efficient in converting line-voltage AC to low-voltage DC, and there are so many millions of them out there that a modest efficiency increase could trim $1billion or more from the annual energy costs of the USA. Well, various governmental agencies are seeking to get improved power-supply efficiency into the marketplace. The central "clearinghouse" site is at efficientpowersupplies.org, and details of their contest are in this PDF."

Roland Piquepaille writes "In this article from Backbone Magazine, Douglas Mulhall, author of 'Our Molecular Future' tells us about the future of nanomedicine. He thinks that medical diagnosis will be the first successful steps, involving nanorobots which will raise alerts when they detect pre-cancerous cells. And twenty years from now, researchers envision that nanomedicine will be a trillion dollar industry. Around 2025, you'll pay $1,000 a year for a nanopill that will extend your life by suppressing heart attacks, diabetes and other diseases. Other scientists say that nanotechnology will be used to build synthetic bone and tissue, an opinion shared by Scientific American, which warns that growing replacement organs is still at least another 10 to 20 years in front of us. More details and references are available in this overview focused on how nanomedicine is going to totally take over healthcare in the 21st century. [Additional note: Slashdot described Mulhall's Law of Disassembly last February.]"

niktesla writes "Scientific American is carrying a story about sythetic life - genetic engineered "machines" made from DNA building blocks called "BioBricks". The goal is to produce a library of building blocks that can be assembled to give predictable results. Reminds me of the technology behind Blade Runner's replicants."