Slashdot Mirror
Domain: nature.com
Stories and comments across the archive that link to nature.com.
Stories · 1,757
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Video Games Boost Visual Skills
cmburns69 writes "A new study published in Nature Magazine (MSNBC summary) suggests that playing action games improves visual skills. Among other things, young adults who played action games such as Grand Theft Auto and Medal of Honor regularly could track up to five objects at a time - 30% more than non-players. Apparently, the game type is important, as ten hours of the block-rotating game Tetris failed to improve test scores." -
Sperm Sorting Chip
Makarand writes "Microscopically narrow fluid streams running side by side barely mix - a phenomenon put to use in a new stamp size silicon chip for purifying sperm. This technique could find use in infertility clinics where centrifugal technqiues, which can damage fragile sperm, are currently used to purify sperm. Semen and salt water are dripped into etched lanes less than half a millimeter wide from opposite ends of the chip. When the lanes merge, the healthy and wriggly sperm swim into the salt water stream and leave the dead and the disabled sperm behind." -
Designing Proteins In Silico
Fluorophore writes "In a recent issue of the scientific journal Nature, scientists in the lab of Homme Hellinga at Duke University reported designing proteins using a cluster of 20 computers. These proteins were then tested in the lab and shown to bind their intended targets including TNT, serotonin and lactate. This is a tremendous step for computational biology, nicely reviewed in C&E News' top story. Designer proteins such as this can be developed for bioremediation of weapons dump sites (TNT) and sensitive sensors of drugs/contaminants that can easily be grown in bacteria." -
Silicon Seduced From Silica
Roland Piquepaille writes "Making silicon is an expensive process, which conventionally involves carbothermal reduction, in which the oxygen is removed from silica by a heterogeneous-homogeneous reaction sequence at approximately 1,700 C. Now, Japanese researchers have developed a new technique which uses electricity to remove the oxygen from silica. Their technique is based on the immersion of silica in a bath of molten calcium chloride salt at 850 C, which should reduce the costs of making silicon -- and other elements, like zirconium. Check this column for a summary or read this article from Nature for additional details." -
Falling to Earth's Core in a Big Blob of Iron
Colin Douglas Howell writes "Um...wow. I found this idea via the BBC, (see also the Nature article), but it's really worth reading the annotated paper on the subject. (Gotta love the title.) Basically, you drill a hole in the crust, blast a big crack in it, inject a huge mass of molten iron with a little probe floating inside (made out of material which won't melt or dissolve in the iron), and let the iron mass sink to the core by gravity, carrying the probe with it. (The initial crack grows downward as the iron sinks.) As the probe falls, it sends data back using seismic signals that can be picked up with a gravitational wave observatory like LIGO, but coupled to the ground. Of course, there are enormous problems with the whole thing, but it's still cool to read about. To me, the idea is even neater because it was dreamed up by Dave Stevenson, one of my old professors (and one of the best professors I've ever had). I hope he doesn't mind being Slashdotted. :-)" -
LCD Screens Almost Paper-thin
DarklordSatin writes "Nature.com has an article up about new LCDs that are thin enough to roll up and can display black and white at 96 dpi. More coverage by Wired and Scientific American. Thanks go to Arstechnica for the heads up." Wow. Let the speculation for new uses begin! Update: 05/10 14:59 GMT by CN : Whoops, this is really a dupe of an older story that slipped through because I only searched for LCDs. Ah well, it's still cool. -
LCD Screens Almost Paper-thin
DarklordSatin writes "Nature.com has an article up about new LCDs that are thin enough to roll up and can display black and white at 96 dpi. More coverage by Wired and Scientific American. Thanks go to Arstechnica for the heads up." Wow. Let the speculation for new uses begin! Update: 05/10 14:59 GMT by CN : Whoops, this is really a dupe of an older story that slipped through because I only searched for LCDs. Ah well, it's still cool. -
Digital Darwin
An anonymous reader writes "Using genetic algorithms to breed strings of computer code graphically, this week's Nature magazine describes results from Caltech and Michigan State. Their program is Avida. While they mainly mimic mutation, not genetic cross-over [or inheritance (thus wiping away much memory of initial conditions)], their simulations show how a short-term backward step in survival strategies can generate innovative advances. It is not unlike running a maze which necessarily involves testing alot of dead-ends, and thus shares the graphical look of Conway's classic Game of Life." Here's a National Geographic story about this as well, or see their press release. -
Digital Darwin
An anonymous reader writes "Using genetic algorithms to breed strings of computer code graphically, this week's Nature magazine describes results from Caltech and Michigan State. Their program is Avida. While they mainly mimic mutation, not genetic cross-over [or inheritance (thus wiping away much memory of initial conditions)], their simulations show how a short-term backward step in survival strategies can generate innovative advances. It is not unlike running a maze which necessarily involves testing alot of dead-ends, and thus shares the graphical look of Conway's classic Game of Life." Here's a National Geographic story about this as well, or see their press release. -
Double Helix: 50 Years of DNA
Dr from the Source writes "Despite previous posts, tomorrow (April 25, 2003) is the real 50th anniversary of the publication of the famous paper by J. D. Watson and F. Crick in the Nature journal. Readers can download such paper, along with a few other classic ones from Nature's archive." -
New Titanium Alloy Bends the Rules
BinaryForces writes "According to Yahoo Takashi Saito and his colleagues at the Toyota Central Research and Development Laboratories in Japan have developed a super alloy with unheard of strength and flexibility. It's not only light, but it can be stretched to more than 2.5 times its original length and return to its previous size. Heat causes almost no expansion. It can be bent and straightened repeatedly without becoming brittle. And the cool part is it was developed using high power computation instead of the traditional trial and error method. More details at Nature's website." -
Accelerated Aging Gene Identified
bradbury writes "A host of news sources are carrying news that the gene responsible for Progeria, otherwise known as Hutchinson-Gilford Syndrome, has been identified as Lamin A (LMNA). Sources include a Eureka Alert article, a Science Daily article and a Nature Science Update article. Of interest is the fact that the gene causes at least 6 other genetic diseases. For the hard core science people, an extended discussion of LMNA can be found in the OMIM database here." -
All Shapes in One Equation?
asadodetira writes ""One simple equation can generate a vast diversity of natural shapes, a Belgian biologist has discovered. Nature has the story. "The Superformula" sounds impressive, apparently its only for shapes, i thought you could solve lots of PDE's or tensor integrals or something with this, but not, it's only for shapes." -
DNA, Fifty Years To the Day
An anonymous reader writes "Today being the fiftieth anniversary (April 2, 1953) of the Watson-Crick double-helical, DNA discovery [to quote, 'We wish to put forward a radically different structure...'], there is an interesting tally of completed gene sequences here, and ones still being worked, including the Ames strain of the anthrax bacteria. It also appears that the only lifeforms not using DNA for code storage are a few viruses like the common cold." -
Photonic Ink Changes Color On Command
An anonymous reader submits "According to Nature's report : "A new ink changes colour at the flick of a switch." It now named Photonic Ink, or P-Ink. "P-Ink's iridescent colours depend upon a process called diffraction." "To make the colour of the ink tunable" the team led by Geoffrey Ozin "packs a polymer gel between its stacked spheres" which can change size "when it is soaked in solvent and shrinks when it dries". In addition, it "conducts electricity", and "altering the voltage tunes the ink's colour smoothly through the spectrum." more detail also can found on Advanced Materials." -
Prime Numbers Not So Random?
Jeff Moriarty writes "Some physicists believe they might have caught a whiff of a pattern in the sequence of prime numbers. This would have a huge impact across mathematics, and to people who just really like primes... or like being Prime." -
Hubble Discovers an Evaporating Planet
Licensed2Hack writes "For the first time, astronomers using NASA's Hubble Space Telescope have observed the atmosphere of an extrasolar planet evaporating off into space. Much of the planet may eventually disappear, leaving only a dense core. The planet is a type of extrasolar planet known as a "hot Jupiter." Spaceflightnow and Nature have the details." -
The Taste of Pain
An anonymous reader writes "The more the human genome is unraveled and previously non-genetic based attributes are now associated with a specific genetic function, such as physical and emotional pain and taste, it seems, to me, that our personalities appear to be much less influenced by out environment and more by our genes." A related article links your sense of taste to your risk for cancer, heart disease, etc. -
How Sharks Sense Temperature Change
Makarand writes "Unlike mammals that use ion channels in their cell walls to produce electrical currents and fire nerves in response to changing temperatures, sharks have been found to be using a totally different approach, one that does not rely on the ion channel mechanism at all. According to this article in Nature a temperature sensitive gel in the pores of the snout allows the shark to sense temperature differences as little as 0.001 C. Increasing temperatures improve electrical conductance of this gel which is noticed by electrically sensitive nerve cells. This may also explain how sharks are able to locate where water masses of different temperatures meet in the oceans to find prey. A synthetic version of the shark gel may be of interest to the microelectronics industry." -
Fungi May Help With Asbestos Cleanups
Makarand writes "Asbestos cleanups are tricky as disturbed soil can disperse and make asbestos fibers airborne. Now scientists are developing bioremediation measures that involve allowing iron-gathering fungi to grow on asbestos contaminated soil and render the asbestos harmless according to this article in Nature. The toxicity of asbestos is partly due to its iron content and microorganisms can help by removing it from the asbestos. Also, the fungi bind asbestos fibers into a web making it difficult for them to become airborne. Identifying the asbestos-attacking genes and introducing them into other microorganisms may be the next step in fighing asbestos pollution." -
Nature lets authors keep copyright
oever writes "In the latest issue of Nature, it says that the copyright for all articles published by the Nature Publishing Group will remain with the article's authors. (I guess I'll have to publish in Nature from now on.) However, to publish an article in Nature, you still have to agree on some limitations with respect to publishing the article in other media. For example, you can put a PDF on you webpage but it's not allowed to add the article to an archive (Google cache?)." -
Nature lets authors keep copyright
oever writes "In the latest issue of Nature, it says that the copyright for all articles published by the Nature Publishing Group will remain with the article's authors. (I guess I'll have to publish in Nature from now on.) However, to publish an article in Nature, you still have to agree on some limitations with respect to publishing the article in other media. For example, you can put a PDF on you webpage but it's not allowed to add the article to an archive (Google cache?)." -
Nature lets authors keep copyright
oever writes "In the latest issue of Nature, it says that the copyright for all articles published by the Nature Publishing Group will remain with the article's authors. (I guess I'll have to publish in Nature from now on.) However, to publish an article in Nature, you still have to agree on some limitations with respect to publishing the article in other media. For example, you can put a PDF on you webpage but it's not allowed to add the article to an archive (Google cache?)." -
Nature lets authors keep copyright
oever writes "In the latest issue of Nature, it says that the copyright for all articles published by the Nature Publishing Group will remain with the article's authors. (I guess I'll have to publish in Nature from now on.) However, to publish an article in Nature, you still have to agree on some limitations with respect to publishing the article in other media. For example, you can put a PDF on you webpage but it's not allowed to add the article to an archive (Google cache?)." -
EL Material Can Generate Both Red and Green Light
Burstwave writes "According to this story, investigators at Philips, in collaboration with researchers at the University of Amsterdam, have developed the first electrochemiluminescent material that can generate both red and green light, an effect that depends on current flow. The full report will appear in Nature on Monday. This significant advance in ECL technology will lead to smaller and brighter full-color LED displays." -
Redesigning The "Back" Button
TheMatt writes "Nature Science Update is reporting today about research by New Zealand scientists on redesigning how the "Back" button works in your browser. They point to the fact that the current "Back" is more of an "Up" in a stack of pages. They propose a system that records all pages visited. A good summary page of their efforts in web navigation (including a interesting thumbnail-style "Back" menu) can be found on their page." -
Redesigning The "Back" Button
TheMatt writes "Nature Science Update is reporting today about research by New Zealand scientists on redesigning how the "Back" button works in your browser. They point to the fact that the current "Back" is more of an "Up" in a stack of pages. They propose a system that records all pages visited. A good summary page of their efforts in web navigation (including a interesting thumbnail-style "Back" menu) can be found on their page." -
DNA Goes Binary
Anonymous Coward writes "Chemists in the United States have constructed the simplest possible genetic language. Like Morse or binary code, it has only two letters - but it can orchestrate some of the basic molecular reactions needed for life to evolve." -
Fake Snow from Potato Starch
Makarand writes "According to this article on Nature.com German chemists have created a new biodegradable type of fake snow from potato starch for the film industry. Most artificial snow types are plastic and it is impossible to pick up all the snow flakes scattered on film sets. The new snow presents no such problems. A good soaking is all that is needed to dissolve these biodegradable snow flakes. The process involves using starch from corn, potatoes or seaweed and puffing it up to make a spongy foam resembling snow." -
Who Owns Science?
immerrath writes "The New York Times has an article [Sorry, tomorrow's article, no Google link yet] on a movement that is rapidly gaining support in the scientific community: the Public Library of Science(PLoS). The founders, Nobel Laureate Harold Varmus, Stanford biologist Pat Brown and Berkeley Lab scientist Michael Eisen, argue that scientific literature cannot be privately controlled or owned by the publishers of scientific journals, and must instead be available in public archives freely accessible by anyone and everyone. This has very important implications for the fundamental principle that Science must transcend all economic, national and other barriers. For a while now, PLoS has been trying to get scientific journals to release the rights to scientific papers; many major journals have not complied -- in response, PLoS is starting PLoS-standard-compliant journals (for which they received a $9 million grant from the Gordon and Betty Moore Foundation), to demonstrate the validity of the idea and persuade academic publishers to adopt the free access model. They even have a GPL-like open access Licence, and their journals have some very prominent scientists on the editorial board. Here is the text of an earlier Newsweek article about PLoS, and here is a Nature Public Debate explaining the issues. Michael Eisen received the 2002 Benjamin Franklin award for his work on PLoS. Don't forget to sign the PLoS open letter!" -
Silkworms Spin Yarn With Human Protein
Makarand writes "Genetically engineered silkworms were able to weave the human protein collagen into their cocoons according to this online article in nature magazine. The human protein ,used in applications like artificial skin and and wound dressings, could be then extracted from the silk yarn using a simple chemical process. This technique could effectively replace the current expensive processes of reaping human therapeutic proteins from bioreactors in the future. Countries that have an established sericulture industry could convert their production facilities to produce medically useful proteins." -
Silkworms Spin Yarn With Human Protein
Makarand writes "Genetically engineered silkworms were able to weave the human protein collagen into their cocoons according to this online article in nature magazine. The human protein ,used in applications like artificial skin and and wound dressings, could be then extracted from the silk yarn using a simple chemical process. This technique could effectively replace the current expensive processes of reaping human therapeutic proteins from bioreactors in the future. Countries that have an established sericulture industry could convert their production facilities to produce medically useful proteins." -
Life Confirmed At Extreme Depths
SEWilco writes "A few years ago the life forms around deep-ocean thermal vents were a surprise. Now ancient bacteria alive in rock 2 miles down have been found. The story is in the San Francisco Chronicle. It is also at Nature.Com, but that server is already rejecting connects. Other bacteria survived frozen in the pressures of an ocean 100 miles deep. This increases the known limits of where life can exist on any planet. Thomas Gold undoubtedly is not surprised at hot, deep bacteria living on hydrogen." -
Frogs Adapts Call Frequency to Maximize Babes
BKize writes "Like a teenager turning his guitar amp up to 11, Nature magazine has an article on the discovery that a male Bornean frog tunes its mating call to its home tree cavity to maximize the sound volume, and thereby increase the odds it will attract a female. A lab experiment revealed the frog dynamically adjusts the frequency of the call if the acoustic properties of the cavity change." -
Frogs Adapts Call Frequency to Maximize Babes
BKize writes "Like a teenager turning his guitar amp up to 11, Nature magazine has an article on the discovery that a male Bornean frog tunes its mating call to its home tree cavity to maximize the sound volume, and thereby increase the odds it will attract a female. A lab experiment revealed the frog dynamically adjusts the frequency of the call if the acoustic properties of the cavity change." -
Chemists Sweeten Plastics For Faster Diodegradation
Makarand writes "Nature has an online article describing attempts of chemists to create tweaked versions polythene, polystyrene and polypropylene that would rapidly biodegrade in a landfill in the presence of soil bacteria. Their technique adds sugars to the polymer chains, like pendants on a necklace, sweetening them in the process and making them palatable to soil bacteria. Less than 3% of the final plastic would be sugar. However, soil bacteria open the chains when they feed on the sugar kicking off the decay process." -
Overview of Computational Biology
woyouwenti writes "Nature is doing an overview on computational biology. Fascinating stuff if you haven't seen before. I especially like the overview by David Searls including my favorite new science category - "Protein Linguistics"..." -
Size Does Matter... But Only in Women
Frankenmoro writes "This online article at Nature notes that new research indicates that a woman's intelligence is directly related to the size of her brain. But, before you uber-male-geeks start to gloat, it may be that a woman with half your brain size has the same language processing power as you do, seeing as how you only use half of your brain to process language, and she's using it all... Lazy boy." -
Size Does Matter... But Only in Women
Frankenmoro writes "This online article at Nature notes that new research indicates that a woman's intelligence is directly related to the size of her brain. But, before you uber-male-geeks start to gloat, it may be that a woman with half your brain size has the same language processing power as you do, seeing as how you only use half of your brain to process language, and she's using it all... Lazy boy." -
Galactic Fossil Found
jazzyseth writes "This story on Nature.com's website reports "Astronomers have discovered a star on the outskirts of the Milky Way that may represent those that filled our Galaxy, and perhaps the Universe, with the chemical elements around us. This fossil from the early days of our Galaxy contains virtually no metal." Here is another link to an article on the BBC website describing the discovery of our galaxy's "oldest star"." -
Galactic Fossil Found
jazzyseth writes "This story on Nature.com's website reports "Astronomers have discovered a star on the outskirts of the Milky Way that may represent those that filled our Galaxy, and perhaps the Universe, with the chemical elements around us. This fossil from the early days of our Galaxy contains virtually no metal." Here is another link to an article on the BBC website describing the discovery of our galaxy's "oldest star"." -
Using Microwaves to Drill Through Glass
Linux_ho writes "UPI is reporting that Israeli researchers have developed a drill that can melt a small hole in glass, ceramics, or concrete with no dust or noise. Nature.com reports that it doesn't work very well with good heat conductors or materials with very high melting points, but the researchers envision a wide variety of manufacturing applications, and possibly some medical uses as well." -
There's a Hole in the Middle of It All
Apparition writes "CNN is reporting that the star at the center of our galaxy is actually a super-massive black hole. The article then claims that it occupies a volume of space about 3 times that of our solar system. If my math is correct, about 230 million suns could fit into that same volume, so it doesn't impress me that the claimed mass of the black hole is only between 2.6 and 3.7 million times that of the sun. So what is up here? Since when do black holes occupy so much space (I thought they were points)? And how can something with a density only 1/100 of our Sun be called super-massive?" I think the article is talking about a maximum possible size of the object, due to limitations on the resolution of our instruments. Nature has a no-registration story about the research. Update: 10/16 23:44 GMT by M : There's an article with more information on space.com, and a press release from the European Southern Observatory. -
Ultra-Strong Nanotube Composites
TheMatt writes "In a story that makes you say "Cool!", Nicholas Kotov and co-workers have created a nanotube composite material six times stronger than carbon-fiber composites. Their final product is a crosslinked material which appears to be just as strong as silicon carbide and tantalum carbide!" -
Malaria Genome Mapped
kilaasi writes "A team of scientist have mapped the malaria-genome. 'After six years, Gardner and an international team have pieced together the DNA sequence of the tiny parasite Plasmodium falciparum that causes the majority of human malaria.' This does not imply that there is a cure at the moment, but it does give hope for a cure in the future. Regards Claus" -
DNA's Error Detecting Code
MagnetarJones writes "Science News Online and Nature.com - Genetic information stored in DNA is read out - transcribed - every time living cells make a new protein molecule to perform some cell function. And this information is copied onto a new strand of DNA when a cell divides. The consequences of wrongly read or copied information can be disastrous. Malfunctioning genes can cause diseases and defects. Errors can occasionally have beneficial effects - they create the mutations that drive the evolutionary process - but they are usually detrimental. Strands of DNA carry information--of the genetic sort--encoded in their chemical structure. Chemist Dónall A. Mac Dónaill of Trinity College in Dublin, Ireland, has now shown that patterns inherent in the chemical makeup of DNA correspond to a digital error-detecting code. His report appears in the Sept. 12 Chemical Communications." -
Human Limb Regeneration a Possibility?
SablKnight writes "This NY Times article (free reg. req.) says maybe. Apparently research is being done in parallel with the more controversial stem cell implantation to attempt to regenerate missing parts in humans. Though this has been a subject of mild interest for centuries, serious research started much more recently, when an experiment involving mice suffered a setback. 'A few years ago, Dr. Ellen Heber-Katz, an immunologist at the Wistar Institute in Philadelphia, was conducting an experiment with those mice, which develop a disease similar to lupus. As is common, Dr. Heber-Katz punched a pattern of holes in each mouse's ear to so she could tell which mouse was which. Three weeks later, she said, when she checked on the experiment, 'there were no ear holes.'' A quick google search reveals similar stories about Dr. Heber-Katz' research in other publications, such as the Science Daily and Nature." -
Parity Code And DNA
jnana writes "There's an interesting article in Nature about error-correcting parity code in DNA. It seems that there are enzymes that check for even-parity nucleotides (according to a 0 and 1 assignment scheme in the article) and recognize odd-parity nucleotides as errors. The authors argue that this parity scheme is the reason that adenine, thymine, cytosine, and guanine became the building blocks of nucleotides instead of other types of purines and pyrimidines that must have coexisted with them." -
Crypto with Epoxy Tokens, Glass Balls and Lasers
Anonymous Coward writes "Scientists from MIT and ThingMagic have collaborated and developed an innovative crypto mechanism using epoxy tokens, glass spheres and lasers. They have actually created a physical one-way function that cannot be tampered, copied or faked! The full scoop can be found at MSNBC, and also at Nature, & TOI." -
Rivers Ran with Gold... 3 Billion Years Ago