![]() |
| Home RSS Directory F.A.Q Try Custom Feed Sonneries Portable |
Latest Flows from this sub-category: random selection from this sub-category: |
News for nerds, stuff that matters Sat, 20 Mar 2010 00:41:00 +0100 ByronScott writes "In today's 'gross news' category, some female insects just might be getting lucky. As an alternative to toxic pesticides, scientists at the Hebrew University of Jerusalem have created 'super-sexed' sterilized male leafhoppers to knock bug boots with females in the wild, resulting in decreased populations. Yes, that means that the female bugs will miss out on the joys of motherhood, but the idea that the insects will be having some fun instead of being gassed to death by poisons is pretty cool."
Read more of this story at Slashdot. Fri, 19 Mar 2010 19:06:00 +0100 Inovaovao writes "As announced on Twitter by the CMS experiment, the LHC has finally accelerated both beams to 3.5 TeV for the first time. It thus broke the previous energy record of 1.18 TeV it had set last fall, about a month since operations started again this year. It'll be a while yet before we see stable beams and collisions at 3.5 TeV. You won't get much of a clue to the timetable by reading the General Manager's pompous announcements. If you want to follow what's going on, look at the Status Ops."
Read more of this story at Slashdot. Fri, 19 Mar 2010 16:22:00 +0100 An anonymous reader writes "Scientists have created the first device to render an object invisible in three dimensions. The 'cloak,' described in the journal Science (abstract; full text requires login), hid an object from detection using light of wavelengths close to those that are visible to humans. Previous devices have been able to hide objects from light travelling in only one direction; viewed from any other angle, the object would remain visible. This is a very early but significant step towards a true invisibility cloak." The "object" hidden in this work was a bump one micrometer high. The light used was just longer than the wavelengths our eyes detect. To get a visible-light cloak, the features of the cloaking metamaterial would need to be reduced in size from 300 nm to 10 nm.
Read more of this story at Slashdot. Fri, 19 Mar 2010 13:12:00 +0100 epee1221 writes "The Clay Mathematics Institute has announced its acceptance of Dr. Grigori Perelman's proof of the Poincaré conjecture and awarded the first Millennium Prize. Poincaré questioned whether there exists a method for determining whether a three-dimensional manifold is a spherical: is there a 3-manifold not homologous to the 3-sphere in which any loop can be gradually shrunk to a single point? The Poincaré conjecture is that there is no such 3-manifold, i.e. any boundless 3-manifold in which the condition holds is homeomorphic to the 3-sphere. A sketch of the proof using language intended for the lay reader is available at Wikipedia."
Read more of this story at Slashdot. Fri, 19 Mar 2010 06:48:00 +0100 parallel_prankster writes "Bruce Bueno de Mesquita is a professor of politics at New York University and a senior fellow at the Hoover Institution at Stanford University in California. In his new book, The Predictioneer (The Predictioneer's Game in the US), he describes a computer model based on game theory which he — and others — claim can predict the future with remarkable accuracy. The website also has a game page where he provides an online version of the game and information on how to play." The (semi-paywalled; may need to register) New Scientist has a story on de Mesquita, too; a snippet: "Over the past 30 years, Bueno de Mesquita has made thousands of predictions about hundreds of issues from geopolitics to personal problems. Overall, he claims, his hit rate is about 90 per cent."
Read more of this story at Slashdot. Thu, 18 Mar 2010 19:20:00 +0100 An anonymous reader writes "D-Shape, an innovative new 3-D printer, builds solid structures like sculptures, furniture, even buildings from the ground up. The device relies on sand and magnesium glue to actually build structures layer by layer from solid stone. The designer, Enrico Dini, is even talking with various organizations about making the printer compatible with moon dust, paying the way for an instant moonbase!"
Read more of this story at Slashdot. Thu, 18 Mar 2010 18:18:00 +0100 SpuriousLogic writes "A team of researchers have created a 'quantum state' in an object billions of times larger than ever before. From the article: 'Such states, in which an object is effectively in two places at once, have until now only been accomplished with single particles, atoms and molecules. In this experiment, published in the journal Nature, scientists produced a quantum state in an object billions of times larger than previous tests. The team says the result could have significant implications in quantum computing.'"
Read more of this story at Slashdot. Thu, 18 Mar 2010 17:00:00 +0100 Garrett Fox writes "University of Cincinnati researchers describe a method of getting photosynthesis from a high-surface-area foam containing enzymes that produce sugar using light and CO2 (abstract). Oddly, the foam itself is derived from a species of frog. More interesting is that the technique doesn't use whole cells or apparently even chloroplasts. The researchers claim 'chemical conversion efficiencies approaching 96%,' as well as tolerance for deliberately high-CO2 environments."
Read more of this story at Slashdot. Thu, 18 Mar 2010 05:41:00 +0100 An anonymous reader writes "Researchers at the Massachusetts Institute of Technology on have released research detailing how molecules in chips can self-assemble, potentially reducing manufacturing costs. The researchers have developed a technique in which polymers automatically fall into place to create an integrated circuit."
Read more of this story at Slashdot. Thu, 18 Mar 2010 03:30:00 +0100 Kilrah_il writes "The linked article provides a short summary of the problems scientists have with statistics. As an intern, I see it many times: Doctors do lots of research but don't have a clue when it comes to statistics — and in the social science area, it's even worse. From the article: 'Even when performed correctly, statistical tests are widely misunderstood and frequently misinterpreted. As a result, countless conclusions in the scientific literature are erroneous, and tests of medical dangers or treatments are often contradictory and confusing.'"
Read more of this story at Slashdot. Thu, 18 Mar 2010 01:45:00 +0100 ByronScott writes "Want eyesight that could put your neighborhood cyborg to shame? Well, University of Washington professor Babak Amir Parviz and his students are working on solar-powered contact lenses embedded with hundreds of semitransparent LEDs, letting wearers experience augmented reality right through their eyes. If their research proves successful, the applications — from health monitoring to gameplay to just plain bionic sight — could be endless."
Read more of this story at Slashdot. Wed, 17 Mar 2010 23:20:00 +0100 Lanxon writes "The guy behind Ultima Online once bought an old Russian rover, despite it being lost on the moon somewhere. And now, using images released by NASA, it has been located on the moon's surface after nearly four decades of being MIA, reports Wired. Richard Garriott, who created the Ultima Online multiplayer game, bought the Lunokhod 2 in a Sotheby's auction in New York in 1998. And so new was the discovery of his lost possession, he hadn't even heard that the craft had been discovered when Wired spoke to him."
(Richard Garriott is also well known as Lord British.)
Read more of this story at Slashdot. Wed, 17 Mar 2010 22:33:00 +0100 Chroniton writes "NASA ice scientists have found a shrimp-like creature and a possible jellyfish 'frolicking' beneath 600 feet of solid Antarctic ice, where only microbes were expected to live. The odds of finding two complex lifeforms after drilling only an 8-inch-wide hole suggests there may be much more. And if such life is possible beneath Earth's oceans, why not elsewhere, like Europa?"
Read more of this story at Slashdot. Wed, 17 Mar 2010 17:46:00 +0100 davecl writes "The Planck satellite has released its first new science images, showing the large scale filamentary structure of cold dust in our own galaxy. This release coincides with the completion of its first survey of the entire sky a couple of weeks ago. There's lots more work to be done, and more observations to be made, before results are ready on the Big Bang, but these images demonstrate Planck's performance and capability. More information is available on the Planck mission blog (which I maintain)."
Read more of this story at Slashdot. Wed, 17 Mar 2010 16:02:00 +0100 telomerewhythere writes "A quest that began over a decade ago with a chance observation has reached a milestone: the identification of a gene that may regulate regeneration in mammals. The absence of this single gene, called p21, confers a healing potential in mice long thought to have been lost through evolution and reserved for creatures like flatworms, sponges, and some species of salamander. 'Unlike typical mammals, which heal wounds by forming a scar, these mice begin by forming a blastema, a structure associated with rapid cell growth and de-differentiation as seen in amphibians. According to the Wistar researchers, the loss of p21 causes the cells of these mice to behave more like embryonic stem cells than adult mammalian cells, and their findings provide solid evidence to link tissue regeneration to the control of cell division. "Much like a newt that has lost a limb, these mice will replace missing or damaged tissue with healthy tissue that lacks any sign of scarring," said the project's lead scientist.' Here is the academic paper for those with PNAS access."
Read more of this story at Slashdot. |
|
contact |