kkleiner writes "Now the field of 3D printing has advanced so far that a company called Nanoscribe is offering one of the first commercially available 3D printers for the nanoscale. Nanoscribe's machine can produce tiny 3D printed objects that are only the width of a single human hair. Amazingly this includes 3D printed objects such as spaceships, micro needles, or even the empire state building."
Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!
Physicist Chris Lee explains one of the toughest judgment calls scientists have to make: figuring out if their crazy ideas are worth pursuing. He says: "Research takes resources. I don't mean money—all right, I do mean money—but it also requires time and people and lab space and support. There is a human and physical infrastructure that I have to make use of. I may be part of a research organization, but I have no automatic right of access to any of this infrastructure. ... This also has implications for scale. A PhD student has the right to expect a project that generates a decent body of work within those four years. A project that is going to take eight years of construction work before it produces any scientific results cannot and should not be built by a PhD student. On the other hand, a project that dries up in two years is equally bad. ... the core idea also needs to be structured so, should certain experiments not work, they still build something that can lead to experiments which do work. Or, if the cool new instrument we want to build can't measure exactly what I intended, there are other things it can measure. One of those other things must be fairly certain of success. To put it bluntly: all paths must lead to results of some form."
An anonymous reader writes "The Obama Administration has put forth a proposal to collect $2 billion over the next 10 years from revenues generated by oil and gas development to fund scientific research into clean energy technologies. The administration hopes the research would help 'protect American families from spikes in gas prices and allow us to run our cars and trucks on electricity or homegrown fuels.' In a speech at Argonne National Laboratory, Obama said the private sector couldn't afford such research, which puts the onus on government to keep it going. Of course, it'll still be difficult to get everyone on board: 'The notion of funding alternative energy research with fossil fuel revenues has been endorsed in different forms by Republican politicians, including Alaskan senator Lisa Murkowsi. But the president still faces an uphill battle passing any major energy law, given how politicized programs to promote clean energy have become in the wake of high-profile failures of government-backed companies.'"
RocketAcademy writes "The Federal Communications Commission has issued a Public Notice to help commercial space companies obtain use of communications frequencies for launch, operations, and reentry. Commercial space companies can obtain the use of government frequencies on a temporary, non-interference basis through the FCC's Experimental Authorization process. Experimental Authorizations are valid for a six-month period from the date of grant and are renewable, but applicants must obtain a new authorization for each launch and must apply 90 days in advance. Unfortunately, this requirement does not meet the needs of suborbital launch providers who expect to fly several times per day and schedule launches as needed, on very short notice."
Hugh Pickens writes "The Web is a place for unlimited exchange of ideas. But according to an NPR report, researchers have found that rude comments on articles can change the way we interpret the news. 'It's a little bit like the Wild West. The trolls are winning,' says Dominique Brossard, co-author of the study on the so-called 'Nasty Effect.' Researchers worked with a science writer to construct a balanced news story on the pros and cons of nanotechnology, a topic chosen so that readers would have to make sense of a complicated issue with low familiarity. They then asked 1,183 subjects to review the blog post from a Canadian newspaper that discussed the water contamination risks of nanosilver particles and the antibacterial benefits. Half saw the story with polite comments, and the other half saw rude comments, like: 'If you don't see the benefits of using nanotechnology in these products, you're an idiot.' People that were exposed to the polite comments didn't change their views really about the issue covering the story, while the people that did see the rude comments became polarized — they became more against the technology that was covered in the story. Brossard says we need to have an anchor to make sense of complicated issues. 'And it seems that rudeness and incivility is used as a mental shortcut to make sense of those complicated issues.' Brossard says there's no quick fix for this issue (PDF), and while she thinks it's important to foster conversation through comments sections, every media organization has to figure out where to draw the line when comments get out of control. 'It's possible that the social norms in this brave new domain will change once more — with users shunning meanspirited attacks from posters hiding behind pseudonyms and cultivating civil debate instead,' writes Brossard. 'Until then, beware the nasty effect.'"
astroengine writes "Although there appears to be a mysterious dearth of exoplanets smaller than Earth, astronomers using data from NASA's Kepler space telescope have estimated that nearly a quarter of all sun-like stars in our galaxy play host to worlds 1-3 times the size of our planet. These astonishing results were discussed by Geoff Marcy, professor of astronomy at the University of California, Berkeley, during a talk the W. M. Keck Observatory 20th Anniversary Science Meeting on Thursday. '23 percent of sun-like stars have a planet within (1-2.8 Earth radii) just within Mercury's orbit,' said Marcy. 'I'll say that again, because that number really surprised me: 23 percent of sun-like stars have a nearly-Earth-sized planet orbiting in tight orbits within 0.25 AU of the host stars.'"
New submitter Spinnakker writes "Lockheed Martin, traditionally known for its development of military systems and aircraft, has developed a process for perforating graphene (carbon sheets only one atom thick) that could potentially reduce the energy required for desalination by two orders of magnitude. The process tailors the hole size to the molecules being separated. In the case of desalination, one would create holes in the graphene large enough to allow water to pass but small enough to block the salt molecules. The advantage to using graphene comes from how extremely thin the material is compared to traditional filters. The thinner the filter, the less energy is required to facilitate reverse osmosis."
ananyo writes "The research world's most famous human cell has had its genome decoded, and it's a mess. German researchers this week report the genome sequence of the HeLa cell line, which originates from a deadly cervical tumor taken from a patient named Henrietta Lacks (Slashdot has previously noted a film made about the cells and there's a recent mutli-award winning book on Lacks). Established the same year that Lacks died in 1951, HeLa cells were the first human cells to grow well in the laboratory. The cells have contributed to more than 60,000 research papers, the development of a polio vaccine in the 1950s and, most recently, an international effort to characterize the genome, known as ENCODE. The team's work shows that HeLa cells contain one extra version of most chromosomes, with up to five copies of some, and raises further questions over the widespread use of HeLa cells as models for human cell biology."
phenopticon writes "Researchers at Berkeley are attempting to revive the extinct passenger pigeon in order to set up a remote island theme park full of resurrected semi-modern extinct animals. (Well, maybe not that last part.) Quoting: 'About 1,500 passenger pigeons inhabit museum collections. They are all that's left of a species once perceived as a limitless resource. The birds were shipped in boxcars by the tons, sold as meat for 31 cents per dozen, and plucked for mattress feathers. But in a mere 25 years, the population shrank from billions to thousands as commercial hunters decimated nesting flocks. Martha, the last living bird, took her place under museum glass in 1914. ... Ben Novak doesn't believe the story should end there. The 26-year-old genetics student is convinced that new technology can bring the passenger pigeon back to life. "This whole idea that extinction is forever is just nonsense," he says. Novak spent the last five years working to decipher the bird's genes, and now he has put his graduate studies on hold to pursue a goal he'd once described in a junior high school fair presentation: de-extinction. ... Using next-generation sequencing, scientists identified the passenger pigeon's closest living relative: Patagioenas fasciata, the ubiquitous band-tailed pigeon of the American west. This was an important step. The short, mangled DNA fragments from the museums' passenger pigeons don't overlap enough for a computer to reassemble them, but the modern band-tailed pigeon genome could serve as a scaffold. Mapping passenger pigeon fragments onto the band-tailed sequence would suggest their original order."
eldavojohn writes "Just like the many stories surrounding alleged 'Wi-Fi sickness,' research is now showing that windfarm sickness spreads by word of mouth instead of applying universally to windfarms. Areas that had never had any noise or health complaints were suddenly experiencing them after 2009 when anti-wind groups targeted populations surrounding windfarms. From the article, 'Eighteen reviews of the research literature on wind turbines and health published since 2003 had all reached the broad conclusion that there was very little evidence they were directly harmful to health.' While there's unfortunately no way to prove that someone is lying about how they feel, it's likely a mixture of confirmation bias, psychosomatic response, hypochondria, greed and hatred of seeing windmills on the horizon that drives this phenomenon."
sciencehabit writes "Samples drilled from 3.5-million-year-old seafloor rocks have yielded the strongest evidence yet that a variety of microorganisms live deeply buried within the ocean's crust. These microbes make their living by consuming methane and sulfate compounds dissolved in the mineral-rich waters flowing through the immense networks of fractures in the crust. The new find confirms that the ancient lavas formed at midocean ridges and found throughout deep ocean basins are by volume the largest ecosystem on Earth, scientists say."
It's a long, slow road from tentative discovery, to various forms of peer review, to wide acceptance, never mind theory and experimental design, but recent years' work to pin down the Higgs Boson seem to be bearing fruit in the form of cautious announcements. FBeans writes with excerpts from both the New York Times ("Physicists announced Thursday they believe they have discovered the subatomic particle predicted nearly a half-century ago, which will go a long way toward explaining what gives electrons and all matter in the universe size and shape.") and from The Independent ("Cern says that confirming what type of boson the particle is could take years and that the scientists would need to return to the Large Hadron Collider — the world's largest 'atom smasher' — to carry out further tests. This will measure at what rate the particle decays and compare it with the results of predictions, as theorised by Edinburgh professor Peter Higgs 50 years ago.")
We'd like to wish you a happy Pi Day. It may be just as arbitrary as some other holidays (though perhaps easier to schedule than some), but any excuse for some delicious food is one I'll take. Reader alphadogg writes with a few suggestions of ways to take part in this convenient celebration of both rationality and irrationality. (And lead your comment with the number of digits you can recite offhand ...)
Celarent Darii writes "In what looks like good news for the American Space program, NASA has restarted production of plutonium. According to the article, after the closure of Savannah Rivers reactor NASA purchased plutonium from Russia, but since 2010 this was no longer possible. The native production of plutonium is a step forward for the space program to achieve the energy density for long term space exploration."
An anonymous reader writes "Being able to diagnose people with Alzheimer's disease years before debilitating symptoms appear is now a step closer to reality. Researchers behind Neurotrack, the technology startup that took the first place health prize at this year's South by Southwest (SXSW) startup accelerator in Austin. The company says their new technology can diagnose Alzheimer's disease up to six years before symptoms appear with 100% accuracy."
First time accepted submitter Dario Izzo writes "The European Space Agency is giving the opportunity to try innovative software algorithms on board of one of its planned orbiting platform. The core architecture includes processors of unprecedented power (for space platforms) and it is fully reconfigurable even down to the operating system and firmware levels. Peripherals include cameras, GPS and attitude control. The full technical specifications are available via the European Space Agency web pages."
coondoggie writes "The bottom line for NASA as well as any number of government agencies in this new era of sequestration is money — and NASA in this case has too many programs chasing too few dollars. That is just one of a number of bleak conclusions NASA's Inspector General Paul Martin laid out to a Congressional hearing adding that 'declining budgets and fiscal uncertainties present the most significant external challenges to NASA's ability to successfully move forward on its many projects and programs. For the first 6 months of this year, NASA has operated under a continuing resolution that funds the Agency at last year's level of $17.8 billion. Moreover, NASA's share of the Government-wide sequestration cuts reduce that spending authority by $894 million.'"
sciencehabit writes "A fluorescent glow high in the atmosphere of Titan, Saturn's largest moon, signifies the presence of a gas that astronomers have yet to identify. The glow appears only on the daytime side of the moon at altitudes between 600 and 1250 kilometers, with the largest intensity occurring at an altitude of about 950 km. Detailed analyses reveal that the glow doesn't stem from a problem with the Saturn-orbiting Cassini craft, and it isn't associated with methane or any of the other hydrocarbons already identified as constituents of Titan's atmosphere."
An anonymous reader writes "The BBC reports on a new study of prehistoric skulls which suggests that Neanderthals became extinct because they had larger eyes than our species. As a consequence of having extra sized eyes, an average 6 millimeters larger in radius, more of their backside brain volume was devoted to seeing, at the expense of frontal lobe high-level processing of information and emotions. This difference affected their ability to innovate and socialize the way we, modern people (Homo Sapiens Sapiens) do. When the last Ice Age set on 28,000 years ago, Neanderthals had no sewn clothes and no large organized groups to rely on each other, hastening their fall. Yet, they were not stupid, brutish creatures as portrayed in Hollywood films, they were very, very smart, but not quite in the same league as the Homo Sapiens of Cromagnon."
xclr8r writes "James Holmes representation did not enter a plea today in with regards to the Aurora, Co. Movie theater shooting so the Judge entered a plea of not guilty for James that could be changed at a later date by Holmes' attorney. The judge entered an advisory that if the plea was changed to Not Guilty by insanity that Holmes would be subject to a 'narcoanalytic interview' with the possibility of medically appropriate substances could be used e.g. so called truth serums. Holmes defense looks to have initially objected to this but as the previous article seems to infer that some compromises are being worked out. This certainly raises legal questions on how this is being played out 5th, 14th amendments. The legal expert in the second article states this is legal under Co. law but admits there's not a huge amount of cases regarding this. I was only able to find Harper v State where a defendant willingly underwent truth serum and wanted to submit the interview on his behalf but was rejected due to the judge not recognizing sufficient scientific basis to admit the evidence."