the_newsbeagle writes "To study the mysterious phenomena of dark matter and dark energy, astronomers are turning to supercomputers that can simulate the entire evolution of the universe. One such simulation, the Bolshoi projection, recently did a complete run-through. It started with the state the universe was in around 13.7 billion years ago (not long after the Big Bang) and modeled the evolution of dark matter and energy up to the present day. The run used 14,000 CPUs on NASA's fastest supercomputer."
Sign up for the Slashdot Daily Newsletter! DEAL: For $25 - Add A Second Phone Number To Your Smartphone for life! Use promo code SLASHDOT25. ×
SchrodingerZ writes "With the price of gold skyrocketing in today's market, Michigan State University researchers have discovered a bacterium that can withstand high toxicity levels that are necessary to create natural gold. '"Microbial alchemy is what we're doing — transforming gold from something that has no value into a solid, precious metal that's valuable," said Kazem Kashefi, assistant professor of microbiology and molecular genetics.' The bacteria is Cupriavidus metallidurans, which is conditioned to be tolerant to heavy, toxic metals and to be 25 times stronger than most bacteria. When put into gold-chloride (a natural forming toxic liquid), the bacteria reproduces and converts the liquid into a gold nugget. The complete process takes about a week to perform. This experiment is currently on tour as an art exhibit called 'The Great Work of the Metal Lover.'"
Lasrick writes "Private security contractors strike again, this time at the Y-12 National Security Complex. A nun, a gardener, and a housepainter cut through three security fences to find themselves 20 feet away from highly dangerous nuclear material. And of course, only one guard has been fired (the one who arguably acted the bravest and did the right thing). A Department of Energy report (PDF) on the incident found 'troubling displays of ineptitude in responding to alarms, failures to maintain critical 2 security equipment, over reliance on compensatory measures, misunderstanding of security protocols, poor communications, and weaknesses in contract and resource management.' The contractors have been put on notice, (PDF), but they still have the contracts."
ananyo writes "One of the largest-ever studies of retractions has found that two-thirds of retracted life-sciences papers were stricken from the scientific record because of misconduct such as fraud or suspected fraud — and that journals sometimes soft-pedal the reason. The study contradicts the conventional view that most retractions of papers in scientific journals are triggered by unintentional errors. The survey examined all 2,047 articles in the PubMed database that had been marked as retracted by 3 May this year. But rather than taking journals' retraction notices at face value, as previous analyses have done, the study used secondary sources to pin down the reasons for retraction if the notices were incomplete or vague. The analysis revealed that fraud or suspected fraud was responsible for 43% of the retractions. Other types of misconduct — duplicate publication and plagiarism — accounted for 14% and 10% of retractions, respectively. Only 21% of the papers were retracted because of error (abstract)."
concealment writes "How much privacy is the scientific process entitled to? During the course of their work, researchers produce e-mails, preliminary results, and peer reviews, all of which might be more confused or critical than the final published works. Recently, both private companies with a vested interest in discounting the results, and private groups with a political axe to grind have attempted to use the courts to get access to that material.Would it be possible or wise to keep these documents private and immune to subpoenas? In the latest issue of Science, a group of researchers from the Woods Hole Oceanographic Institution (WHOI) argue that scientists need more legal rights to retain these documents and protect themselves in court."
black6host writes "Humans have reached the moon and are planning to return samples from Mars, but when it comes to exploring the land deep beneath our feet, we have only scratched the surface of our planet. This may be about to change with a $1 billion mission to drill 6 km (3.7 miles) beneath the seafloor to reach the Earth's mantle — a 3000 km-thick layer of slowly deforming rock between the crust and the core which makes up the majority of our planet — and bring back the first ever fresh samples."
An anonymous reader writes "British researchers at the Universities of Sussex and Sheffield are developing a computer model of a bee's brain that they hope can help scientists better understand the brains of more-complex animals, such as humans, and perhaps power artificial intelligence systems for bee-like robots. Called 'Green Brain,' the project is trying to advance the science of AI beyond systems that just follow a predetermined set of rules, and into an area where AI systems can actually act autonomously and respond to sensory signals."
RougeFive writes "Imagine a warship weapon that can launch projectiles at Mach 10 without explosives (more than three times the muzzle speed of an M16 rifle), that has a range of 220 miles and that uses the enormous speed to destroy the target by causing as much damage as a Tomahawk missile. Meet the U.S. Navy's electromagnetic railgun program."
Zothecula writes "The internet has revolutionized global communications and now researchers at Stanford University are looking to provide a similar boost to bioengineering with a new process dubbed "Bi-Fi." The technology uses an innocuous virus called M13 to increase the complexity and amount of information that can be sent from cell to cell. The researchers say the Bi-Fi could help bio-engineers create complex, multicellular communities that work together to carry out important biological functions."
teleyinex writes "ForestWatchers.net is a citizen project with the goal of making it possible for anyone (locals, volunteers, NGOs, governments, etc), anywhere in the world, to monitor selected patches of forest across the globe, almost in real-time, using a computer connected to the Internet. The project has recently released a first alpha web application (built using the open source crowdsourcing PyBossa framework) where volunteers can participate by classifying satellite images of one area of the Amazon basin."
An anonymous reader writes "In 2008, Sherrie Walters, now 42 years old, discovered that she had rapidly spreading basal cell cancer in her ear. The disease is a type of skin cancer. The doctors pursued an aggressive treatment to combat the destructive disease, removing her ear, part of her skull, and her left ear canal. Though Walters was left without an ear, she was still able to hear with the help of a special hearing aid. A few months ago, doctors from the renowned Johns Hopkins University in Baltimore decided to try a new procedure on Walters. Using cartilage from her rib, the doctors stitched a new ear to match her right one. Then their creation was implanted under the skin of her forearm, where the ear grew for months. ...Doctors attached the ear and blood vessels surgically. Another surgery, conducted this week, gave the ear shape and detail. Dr. Patrick Byrne, a revered plastic and reconstructive surgeon, says that after the swelling goes down and the ear heals, Walters will have an ear that both looks and functions normally."
cylonlover writes "Titan is Saturn's largest moon, and it's said to be one of the most Earth-like celestial bodies in the Solar System. It has a thick atmosphere, and is covered with a network of seas, lakes and rivers – albeit ones made up of liquid hydrocarbons instead of water. Now, a team of scientists are proposing sending a boat-like probe to Titan, that would travel across its largest lake. The probe, which is still in the concept stage, is known as TALISE – that stands for Titan Lake In-situ Sampling Propelled Explorer, although it's also an Iroquois word for 'beautiful water.' The plan calls for it to land in the middle of Ligeia Mare, which is near the moon's north pole. It would then set out on a six-month to one-year mission, taking scientific measurements and obtaining samples as it makes its way to the closest shore."
linjaaho writes "A group of Finnish mathematics researchers, teachers and students write an upper secondary mathematics textbook in a three-day booksprint. The event started on Friday 28th September at 9:00 (GMT+3) and the book will be (hopefully) ready on Sunday evening. The book is written in Finnish. The result — LaTeX source code and the PDF — is published with open CC-BY-license. As far as the authors know, this is the first time a course textbook is written in three-day hackathon. The hackathon approach has been used earlier mainly for coding open source software and writing manuals for open source software. The progress can be followed by visiting the repository at GitHub or the project Facebook page."
sciencehabit writes "Like all invisible things that are only partly understood, black holes evoke a sense of mystery. Astronomers know that the tremendous gravitational pull of a black hole sucks matter in, and that the material falling in causes powerful jets of particles to shoot out of the hole at nearly the speed of light. But how exactly this phenomenon occurs remains a matter of conjecture, because astronomers have never quite managed to observe the details – until now. Astrophysicists have taken the closest look to date at the region where matter swirls around a black hole. By measuring the size of the base of a jet shooting out of the supermassive black hole at the center of the M87 galaxy (abstract), the researchers conclude that the black hole must be spinning and that the material orbiting must also be swirling in the same direction. Some of the material from this orbiting 'accretion disk' is also falling into the black hole, like water swirling down a drain."