An anonymous reader sends news of a study which found that "two out of five medical students have an unconscious bias against obese people." The study, published in the Journal of Academic Medicine (abstract) examined med students from many different cultural and geographical backgrounds. "The researchers used a computer program called the Weight Implicit Association Test (IAT) to measures students’ unconscious preferences for 'fat' or 'thin' individuals. Students also answered a survey assessing their conscious weight-related preferences. The authors determined if the students were aware of their bias by seeing if their IAT results matched their stated preferences. Overall, 39 percent of medical students had a moderate to strong unconscious anti-fat bias as compared to 17 percent who had a moderate to strong anti-thin bias. Less than 25 percent of students were aware of their biases. 'Because anti-fat stigma is so prevalent and a significant barrier to the treatment of obesity, teaching medical students to recognize and mitigate this bias is crucial to improving the care for the two-thirds of American adults who are now overweight or obese,' Miller said. 'Medical schools should address weight bias as part of a comprehensive obesity curriculum.'"
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An anonymous reader writes "A very recent paper in the prestigious biology journal Cell — 'Human Embryonic Stem Cells Derived by Somatic Cell Nuclear Transfer' (openly accessible) — reports the novel creation of human embryonic stem cells from somatic nuclei. It has received massive media coverage and is surely penciled in as a strong candidate for scientific publication of the year. It does however have several examples of image reuse that have been pointed out by a submission on PubPeer. In the paper, it is recorded that the journal Cell accepted this paper just 4 days after submission. Perhaps, under the circumstances, the pre-publication peer review had to be a little hasty? At least at PubPeer, while conducting post publication review, we can take as long as necessary to make up for that lost time. 'In 2004 scientists led by Woo Suk Hwang of Seoul National University claimed to have produced human embryonic stem cells through the same technique used by the Oregon team. Their paper, published in Science, turned out to contain fabricated data. That came to light when scientists figured out that some of the images in the paper were copied or manipulated.''"
vikingpower writes "A team of international experts has drawn up the Soil Atlas of Africa — the first such book mapping this key natural resource — to help farmers, land managers and policymakers understand the diversity and importance of soil and the need to manage it through sustainable use. A joint commission of the African Union and the European Union has produced a complete atlas of African soils, downloadable as three hefty PDFs (Part 1, Part 2 and Part 3). The initiative was announced four years ago, and is intended 'to help farmers, land managers and policymakers understand the diversity and importance of soil and the need to manage it through sustainable use.' A digital, interactive series of maps is (still) in the making."
Earlier this year we discussed a petition on the White House's 'We The People' site asking the administration to adopt the metric system as the standard system of measurement in the U.S. Today, the administration issued a disappointing response. Simply put: they're not going to do anything about it. They frame their response as a matter of preserving a citizen's choice to adopt whatever measurement system he wants. Quoting Patrick D. Gallagher of the National Institute of Standards and Technology: "... contrary to what many people may think, the U.S. uses the metric system now to define all basic units used in commerce and trade. At the same time, if the metric system and U.S. customary system are languages of measurement, then the United States is truly a bilingual nation. ... Ultimately, the use of metric in this country is a choice and we would encourage Americans to continue to make the best choice for themselves and for the purpose at hand and to continue to learn how to move seamlessly between both systems. In our voluntary system, it is the consumers who have the power to make this choice. So if you like, "speak" metric at home by setting your digital scales to kilograms and your thermometers to Celsius. Cook in metric with liters and grams and set your GPS to kilometers. ... So choose to live your life in metric if you want, and thank you for signing on."
sciencehabit writes "Physicists have, for the first time, been able to image the quantum workings of electrons in hydrogen atoms, an advance that could open the door to a deeper understanding of the quantum world (abstract). Building on a 1981 proposal by three Russian theorists and more recent work that brought that proposal into the realm of possibility, the team first fired two lasers at hydrogen atoms inside a chamber, kicking off electrons at speeds and directions that depended on their underlying wave functions. A strong electric field inside the chamber guided the electrons to positions on a planar detector that depended on their initial velocities rather than on their initial positions. So the distribution of electrons striking the detector matched the wave function the electrons had at the moment they left their hydrogen nuclei behind. There may be practical applications in the future—a commentary accompanying the paper suggests that the method could aid in the development of technologies such as molecular wires, atom-thick conductors that could help shrink electronic devices—but that their result concerns 'extremely fundamental' physics that might be just as valuable for developing quantum intuition in the next generation of physicists."
New submitter kwyjibo87 writes "The World Health Organization (WHO) publicly expressed dismay yesterday concerning news that intellectual property claims were hindering research on a deadly new emerging virus. Novel coronavirus (nCoV), a member of the same viral genus as the causative agent of SARS, has claimed the lives of 22 people (out of 44 reported infected) and left both researchers and health officials scrambling to develop effective diagnostic tests in addition to possible medications and vaccines against nCoV. Now, however, claims of intellectual property on the new virus are hindering research on nCoV according to the WHO, delaying advancements on tools to prevent further spread of the infection. Stories of intellectual property rights in science hindering advancements in research, particularly in clinical applications, are nothing new; the U.S. Supreme Court recently heard arguments on the validity of patents on the BRCA1/2 genes and has yet to issue a decision. The issue of sharing scientific information in order to promote faster research on emerging pathogens is not limited to intellectual property — a recent article in the journal Nature highlighted a case where Chinese researchers risked having their research scooped after uploading viral sequences to a public database designed aid global scientific collaboration."
New submitter trendspotter writes "Scientists at the University of Rochester found a unique way to measure high IQ and IQ of the brain in general just by studying individuals and their abilities to filter out noise in images (abstract). The results of a visual test where people were told to quickly detect movements showed similar IQ results as a classic intelligence test. 'The relationship between IQ and motion suppression points to the fundamental cognitive processes that underlie intelligence, the authors write. The brain is bombarded by an overwhelming amount of sensory information, and its efficiency is built not only on how quickly our neural networks process these signals, but also on how good they are at suppressing less meaningful information. ... The researchers point out that this vision test could remove some of the limitations associated with standard IQ tests, which have been criticized for cultural bias.'"
photonic writes "The BBC is reporting on a possible collision between Ecuador's first satellite (a small cubesat) and debris from an upper stage of an old Russian rocket. If confirmed, this might be the third case in recent years, after a high-speed collision of an Iridium satellite with a dead Russian satellite in 2009 and a collision earlier this year between a Russian laser reflector (which can be tracked very accurately) and a tiny piece of a debris from a Chinese weather satellite that was destroyed in a missile test."
MTorrice writes "Medical researchers think specially tailored RNA sequences could kill tumor cells or encourage wound healing by turning off genes in patients' cells. Now researchers have developed a nanocoating for bandages or other medical materials that could deliver these fragile gene-silencing RNAs right where they're needed. The team hopes to produce a bandage that shuts down genes standing in the way of healing in chronic wounds."
sciencehabit writes "Only a few years after roach motels were introduced in the 1980s, they lost their allure for an increasing number of German cockroaches. Researchers soon realized that some roaches had developed an aversion to glucose—the sugary bait disguising the poison—and that the insects were passing that trait on to their young. Now, scientists have figured out how this behavior evolved."
coondoggie writes "When to comes to offering warm yet visually efficient lighting, LEDs have a long way to go. But scientists with the University of Georgia and Oak Ridge and Argonne national laboratories are looking at new family of crystals they say glow different colors and hold the key for letting white LED light shine in homes and offices as well as natural sunlight."
First time accepted submitter Rebecka writes with bad news, quoting an IB Times report: "Just as the 2013 hurricane season is about to begin, one of the U.S.' main weather satellites failed this week. The Geostationary Operational Environmental Satellite, also known as GOES-13, reportedly ceased to operate as of Tuesday, making it impossible to predict weather patterns on the East Coast." A note at NOAA's page for the GOES family of satellites says "GOES-13 imaging and sounding operations suspended. Recovery efforts for GOES-13 continue and the spacecraft health and safety are nominal. GOES-14 is being activated." You can follow the progress on the agency's page of General Satellite Messages.
Kiera Wilmot, the Florida high school student who was expelled from her school after an unauthorized science experiment was misperceived as a weapon (at least for purposes of arrest and charging), won't be going to jail. She will, though, be going to Space Camp, thanks to a crowdfunding campaign started by author and former NASA engineer Homer Hickham. All charges against her have been dropped.
sciencehabit writes "Physicists have long known that quantum mechanics allows for a subtle connection between quantum particles called entanglement, in which measuring one particle can instantly set the otherwise uncertain condition, or 'state,' of another particle—even if it's light years away. Now, experimenters in Israel have shown that they can entangle two photons that don't even exist at the same time. Anton Zeilinger, a physicist at the University of Vienna, says that the experiment demonstrates just how slippery the concepts of quantum mechanics are. 'It's really neat because it shows more or less that quantum events are outside our everyday notions of space and time.'"
astroengine writes "In a recent batch of images beamed back to Earth from Mars rover Curiosity's MAHLI camera, obvious signs of wear and tear could be seen in the 'skin' of the robot's wheels. Considering Curiosity is only 281 sols (Mars days) into its mission and roved less than a kilometer after landing, surely this doesn't bode well? Fortunately, there's good news. 'The wear in the wheels is expected,' Matt Heverly, lead rover driver for the MSL mission at NASA's Jet Propulsion Laboratory in Pasadena, Calif., told Discovery News. 'We will continue to characterize the wheels both on Mars and in the Marsyard, but we don't expect the wear to impact our ability to get to Mt. Sharp.'"
AndyKrish writes "A BBC story reports that scientists at Albert Einstein College of Medicine at Yeshiva University found Vitamin C kills drug resistant tuberculosis (abstract). Though results are preliminary — the lead investigator of the study said, 'We have only been able to demonstrate this in a test tube, and we don't know if it will work in humans and in animals' — this is an exciting development in the fight against drug-resistant TB."
astroengine writes "The mother of all cosmic collisions has been spotted between two galaxies containing a total of 400 billion stars, igniting the birth of 2,000 new stars per year! This incredible event was first spotted by the recently-retired Herschel infrared space observatory (abstract), a mission managed by the European Space Agency. This violent discovery isn't just awesome to look at, it could also help explain how massive, red elliptical galaxies evolved in the early universe."
FuzzNugget writes "A contributor at ScienceBlogs.com has compiled and published a shockingly long list of systematic attacks on scientific research committed by the Canadian government since the conservatives came to power in 2006. This anti-scientific scourge includes muzzling scientists, shutting down research centers, industry deregulation and re-purposing the National Research Council to align with business interests instead of doing real science. It will be another two years before Canadians have the chance to go to the polls, but how much more damage will be done in the meantime?"
Wired reports on a cluster of mini-satellites that will soon be launched into orbit that will assist U.S. special forces personnel during manhunts. "SOCOM is putting eight miniature communications satellites, each about the size of a water jug, on top of the Minotaur rocket that's getting ready to launch from Wallops Island, Virginia. They’ll sit more than 300 miles above the earth and provide a new way for the beacons to call back to their masters." When special forces are able to tag their target, the target can be tracked and located through the use of satellites and cell towers, but coverage is poor in many areas of the world. The satellites going up in September will help to fill in some gaps. "This array of configurable 'cubesats' is designed to stay aloft for three years or more. Yes, it will serve as further research project. But 'operators are going to use it,' Richardson promised an industry conference in Tampa last week."
New submitter QuantumPion writes "The Environmental Protection Agency released draft guidelines last month that could significantly relax radiation hazard standards in the case of a radiological event in the United States by using risk-based decisions. The goal is to have limits that make sense in an emergency that are different from the limits in day-to-day life. From the article: 'Currently, the only guidance are the extremely strict standards that apply for EPA Superfund sites and nuclear plant decommissioning, which are as low as 0.010–0.025 rem/year, far below the natural background levels in the U.S. of 0.300 rem/year, and even well below the average amount of radioactive materials that Americans eat each year. And these guidelines aren’t really different from the 1992 PAG, except in the area of long-term cleanup standards and, perhaps, standards for resettlement. What’s the big deal here? As radworkers, we’re allowed to get 5 rem/year. 2 rem/year doesn’t rate a second thought. ... No one has ever been harmed by 5 rem/year, so setting emergency levels at 2 rem/year is pretty mild and more than reasonable. ... Think of it this way. The situations covered by these new guidelines are similar to someone dying of thirst who has the chance to drink fresh water having 2,000 pCi per gallon of radium in it. While the safe drinking water levels are 20 pCi/gal for Ra, 2,000 pCi/gal is of no threat, especially if you’re going to die from imminent dehydration. Of course, a bag of potato chips has 3,500 picocuries, so go figure.'"
cervesaebraciator writes "According to Quartz, '[Anjan Contractor's] Systems & Materials Research Corporation just got a six month, $125,000 grant from NASA to create a prototype of his universal food synthesizer. But Contractor, a mechanical engineer with a background in 3-D printing, envisions a much more mundane — and ultimately more important — use for the technology. He sees a day when every kitchen has a 3-D printer, and the earth's 12 billion people feed themselves customized, nutritionally-appropriate meals synthesized one layer at a time, from cartridges of powder and oils they buy at the corner grocery store. Contractor's vision would mean the end of food waste, because the powder his system will use is shelf-stable for up to 30 years, so that each cartridge, whether it contains sugars, complex carbohydrates, protein or some other basic building block, would be fully exhausted before being returned to the store.' No word yet on whether anyone other than the guy trying to sell the technology thinks it'll make palatable food."
necro81 writes "Although its Tevatron particle accelerator has gone dark, Fermi Laboratory outside Chicago is still doing physics. A new experiment, called muon g-2 will investigate quantum mechanical behavior of the electron's heavier sibling: the muon. Fermi needs a large ring chamber to store the muons it produces and investigates, and it just so happens that Brookhaven National Laboratory outside NYC has one to spare. But how do you transport a delicate, 15-m diameter, 600-ton superconducting magnet halfway across the country? Very carefully."
ananyo writes "Researchers have discovered that animal mucus — ' whether from humans, fish or corals' — is loaded with bacteria-killing viruses called phages. These protect their hosts from infection by destroying incoming bacteria. In return, the phages are exposed to a steady torrent of microbes in which to reproduce. Mucus mainly consists of huge molecular complexes called mucins, which are made up of thousands of glycan sugars attached to a central protein backbone. The team showed that phages stick to these sugars, reducing the number of bacteria that can attach to mucus by more than 10,000 times."
sciencehabit writes "Archaeologists have long debated when early humans began hurling stone-tipped spears and darts at large prey. By throwing a spear, instead of thrusting it, humans could hunt buffalo and other dangerous game from a safe distance, with less risk of a goring or mauling. But direct evidence of this hunting technique in early sites has been lacking. A new study of impact marks on the bones of ancient prey shows that such sophisticated killing techniques go back at least 90,000 years ago in Africa and offers a new method of determining how prehistoric hunters made their kills."
kkleiner writes "The FDA is finalizing its review of the antibacterial agent triclosan common to many soaps and other health/household products after four decades of use. Recent studies suggest the chemical may be harmful to animals and could interfere with the human immune system along with increasing the proliferation of antibiotic-resistant bacteria. The agency has been slow to cast a verdict, to much criticism considering its widespread use."
sciencehabit writes "Whooping cough, or pertussis, has exploded in the United States in recent years. A new study (abstract) confirms what scientists have suspected for some time: The return of the disease is caused by the introduction of new, safer vaccines 2 decades ago. Although they have far fewer side effects, the new shots don't offer long-lived protection the way older vaccines do."
cylonlover writes "Recently the media has been saturated with overly-hyped reports that NASA's Alpha Magnetic Spectrometer may have detected dark matter. These claims may have some justification if the word 'may' is shouted, but they rest on a number of really major assumptions and guesses, some of which are on weak and shifting soil. So just what was seen in the experiment, and what are the possible explanations?"
cold fjord writes "A healthcare provider has sued the Internal Revenue Service and 15 of its agents, charging they wrongfully seized 60 million medical records from 10 million Americans ... [The unnamed company alleges] the agency violated the Fourth Amendment in 2011, when agents executed a search warrant for financial data on one employee – and that led to the seizure of information on 10 million, including state judges. The search warrant did not specify that the IRS could take medical information, UPI said. And information technology officials warned the IRS about the potential to violate medical privacy laws before agents executed the warrant, the complaint said." Also at Nextgov.com.
The Associated Press (as carried by the Washington Post) reports that a living payload of newts and mice has been retrieved after a month orbiting earth in a Russian space capsule at an altitude of 345 miles, far higher than the ISS's orbital distance of 205 miles. Says the story: "Fewer than half of the 53 mice and other rodents who blasted off on April 19 from the Baikonur Cosmodrome survived the flight, Russian news agencies reported, quoting Vladimir Sychov, deputy director of the Institute of Medical and Biological Problems and the lead researcher. Sychov said this was to be expected and the surviving mice were sufficient to complete the study, which was designed to show the effects of weightlessness and other factors of space flight on cell structure. All 15 of the lizards survived, he said. The capsule also carried small crayfish and fish."
New submitter GoJays writes "An 18-year-old from Saratoga, California has won an international science fair for creating an energy storage device that can be fully juiced in 20 to 30 seconds. The fast-charging device is a so-called supercapacitor, a gizmo that can pack a lot of energy into a tiny space, charges quickly and holds its charge for a long time. What's more, it can last for 10,000 charge-recharge cycles, compared with 1,000 cycles for conventional rechargeable batteries, according to the inventor Eesha Khare." This one in particular has been used so far only to power an LED, rather than a phone or laptop, but I hope in a few years near-instant charging of portable electronics will be the norm as supercapacitors grow more common.
From a NASA press release published Friday: "For the past 8 years, NASA astronomers have been monitoring the Moon for signs of explosions caused by meteoroids hitting the lunar surface. 'Lunar meteor showers' have turned out to be more common than anyone expected, with hundreds of detectable impacts occurring every year. They've just seen the biggest explosion in the history of the program." Watch the flash for yourself.
New submitter SessionExpired writes "Five 9th graders from Denmark have shown that garden cress won't germinate when placed near a router (Google Translation of Danish original). Article text is in Danish, but the pictures illustrate their results. The exact mechanism is still unknown (Danish original), but experts have shown interest in reproducing the experiment."
An anonymous reader writes "A meta-study published yesterday looked at over 12,000 peer-reviewed papers on climate science that appeared in journals between 1991 and 2011. The papers were evaluated and categorized by how they implicitly or explicitly endorsed humans as a contributing cause of global warming. The meta-study found that an overwhelming 97.1% of the papers that took a stance endorsed human-cause global warming. They also asked the 1,200 of the scientists involved in the research to self-evaluate their own studies, with nearly identical results. In the interest of transparency, the meta-study results were published in an open access journal, and the researchers set up a website so that anybody can check their results. From the article: '... a memo from communications strategist Frank Luntz leaked in 2002 advised Republicans, "Should the public come to believe that the scientific issues are settled, their views about global warming will change accordingly. Therefore, you need to continue to make the lack of scientific certainty a primary issue in the debate." This campaign has been successful. A 2012 poll from U.S. Pew Research Center found less than half of Americans thought scientists agreed humans were causing global warming. The media has assisted in this public misconception, with most climate stories "balanced" with a "skeptic" perspective. However, this results in making the 2–3% seem like 50%. In trying to achieve "balance," the media has actually created a very unbalanced perception of reality. As a result, people believe scientists are still split about what's causing global warming, and therefore there is not nearly enough public support or motivation to solve the problem.'"
astroengine writes "After nine years of hard Mars roving, Mars Exploration Rover (MER) Opportunity has broken a 40-year-old extraterrestrial distance record. On Thursday, the tenacious six-wheeled robot drove 80 meters (263 feet), nudging the total distance traveled since landing on the red planet in 2004 to 35.760 kilometers (22.220 miles). NASA's previous distance record was held by Apollo 17 astronauts Eugene Cernan and Harrison Schmitt when, in December 1972, they drove their Lunar Roving Vehicle 35.744 kilometers (22.210 miles) over the lunar surface. Although it's broken the NASA distance record, it hasn't surpassed the international record, yet. The Soviet Lunokhod 2 remote-controlled moon rover roved 37 kilometers (23 miles) across the lunar surface and, so far, remains the undisputed champion of distance driving on an extraterrestrial surface."
sciencehabit writes "If you are one of the 20% of healthy adults who struggle with basic arithmetic, simple tasks like splitting the dinner bill can be excruciating. Now, a new study suggests that a gentle, painless electrical current applied to the brain can boost math performance for up to 6 months. Researchers don't fully understand how it works, however, and there could be side effects." We've covered various other potential benefits to having your brain shocked.
jfruh writes "Larry Page revealed that he'd been suffering from a vocal cord ailment that impaired his ability to speak for more than a year. The positive feedback he got from opening up about it inspired him to tell attendees at Google I/O that we should all be less uptight about keeping our medical records private. As far as Page is concerned, pretty much the only legitimate reason for worry on this score is fear of being denied health insurance. 'Maybe we should change the rules around insurance so that they have to insure people,' he said."
astroengine writes "Dust devils are a well-known atmospheric phenomena on Mars, and as these new HiRISE observations show, the devilish vorticies can carve beautiful patterns in the Martian dust. What's more — in side-by-side comparisons of observations of the same Mars region years apart — it appears that the active Mars atmosphere acts like an Etch A Sketch, rubbing out the dust devils' tracks, only for the dust devils to make brand new tracks years later."
ananyo writes "Scientists working 2.4 kilometers below Earth's surface in a Canadian mine have tapped a source of water that has remained isolated for at least a billion years. The researchers say they do not yet know whether anything has been living in it all this time, but the water contains high levels of methane and hydrogen — the right stuff to support life. Micrometer-scale pockets in minerals billions of years old can hold water that was trapped during the minerals' formation. But no source of free-flowing water passing through interconnected cracks or pores in Earth's crust has previously been shown to have stayed isolated for more than tens of millions of years (paper abstract)."
ananyo writes "D-Wave, the small company that sells the world's only commercial quantum computer, has just bagged an impressive new customer: a collaboration between Google, NASA and the non-profit Universities Space Research Association. The three organizations have joined forces to install a D-Wave Two, the computer company's latest model, in a facility launched by the collaboration — the Quantum Artificial Intelligence Lab at NASA's Ames Research Center. The lab will explore areas such as machine learning — useful for functions such as language translation, image searches and voice-command recognition. The Google-led collaboration is only the second customer to buy computer from D-Wave — Lockheed Martin was the first."
davecb writes "The Canadian Intellectual Property Office (CIPO) has recently published two notices for patent examiners relating to patent interpretation, and in particular computer-related/business method type patents saying: 'for example, what appears on its face to be a claim for an "art" or a "process" may, on a proper construction, be a claim for a mathematical formula and therefore not patentable subject matter.'"
cyachallenge writes "Scientists say they have, for the first time, cloned human embryos capable of producing embryonic stem cells. 'We had to find the perfect combination,' Mitalipov says. As it turned out, that perfect combination included something surprising: caffeine. That ingredient, plus other tweaks in the process, including using fresh eggs and determining the optimal stage of each egg's development, Mitalipov says."
An anonymous reader sends this excerpt from Wired: "[Henry] Markram was proposing a project that has bedeviled AI researchers for decades, that most had presumed was impossible. He wanted to build a working mind from the ground up. ... The self-assured scientist claims that the only thing preventing scientists from understanding the human brain in its entirety — from the molecular level all the way to the mystery of consciousness — is a lack of ambition. If only neuroscience would follow his lead, he insists, his Human Brain Project could simulate the functions of all 86 billion neurons in the human brain, and the 100 trillion connections that link them. And once that's done, once you've built a plug-and-play brain, anything is possible. You could take it apart to figure out the causes of brain diseases. You could rig it to robotics and develop a whole new range of intelligent technologies. You could strap on a pair of virtual reality glasses and experience a brain other than your own."
HyperbolicParabaloid writes "According to the New York Times, an equipment failure on the Kepler spacecraft may mean the end of its planet-hunting mission. One of the reaction wheels that maintains the craft's orientation — critical to long-exposure imaging — has failed. 'In January engineers noticed that one of the reaction wheels that keep the spacecraft pointed was experiencing too much friction. They shut the spacecraft down for a couple of weeks to give it a rest, in the hopes that the wheel’s lubricant would spread out and solve the problem. But when they turned it back on, the friction was still there. Until now, the problem had not interfered with observations, which are scheduled to go on until at least 2016. Kepler was launched with four reaction wheels, but one failed last year after showing signs of erratic friction. Three wheels are required to keep Kepler properly and precisely aimed. Loss of the wheel has robbed it of the ability to detect Earth-size planets, although project managers hope to remedy the situation. The odds, astronomers said, are less than 50-50.'"
sciencehabit writes "From the human perspective, few events in evolution were more momentous than the split among primates that led to apes (large, tailless primates such as today's gorillas, chimpanzees, and humans) and Old World monkeys (which today include baboons and macaques). DNA studies of living primates have estimated that the rift took place between 25 million and 30 million years ago, but the earliest known fossils of both groups date no earlier than 20 million years ago. Now, a team working in Tanzania has found teeth and partial jaws from what it thinks are 25-million-year-old ancestors of both groups. If the interpretations hold up (abstract), the finds would reconcile the molecular and fossil evidence and possibly provide insights into what led to the split in the first place."
MTorrice writes "A low-cost chemical process can turn hemp fiber into carbon nanomaterials. Researchers used the materials to make devices called supercapacitors that provide quick bursts of electrical energy. Supercapacitors made with the hemp nanosheets put out more power than commercial devices can." According to one of the authors, "Hemp bast is a nanocomposite made up of layers of lignin, hemicellulose, and crystalline cellulose ... If you process it the right way, it separates into nanosheets similar to graphene." Perhaps the process could be applied to related plants (hops?) too.
ananyo writes "Global warming is changing the location of Earth's geographic poles, according to a study published this week. Researchers at the University of Texas, Austin, report that increased melting of the Greenland ice sheet — and to a lesser degree, ice loss in other parts of the globe — helped to shift the North Pole several centimeters east each year since 2005. From 1982 to 2005, the pole drifted southeast towards northern Labrador, Canada, at a rate of about 2 milliarcseconds — or roughly 6 centimetres — per year. But in 2005, the pole changed course and began galloping east towards Greenland at a rate of more than 7 milliarcseconds per year (abstract). The results suggest that tracking polar shifts can serve as a check on current estimates of ice loss. Scientists can locate the north and south poles to within 0.03 milliarcseconds by using Global Positioning System measurements to determine the angle of Earth's spin. When mass is lost in one part of a spinning sphere, its spin axis will tilt directly towards the position of the loss — exactly as the team observed for Greenland."
theodp writes "Last summer, unspecified voice problems caused Google CEO Larry Page to miss Google's Annual Shareholder Meeting, the I/O conference, and a quarterly earnings call. Now, Page has come forward and revealed that he suffers from partial paralysis of each of his vocal chords, an 'extremely rare' condition. Not unlike what Sergey Brin and his wife are doing with Parkinson's research, Page and his wife will be funding and overseeing 'a significant research program' led by Dr. Steven Zeitels of Harvard Medical School."
cylonlover writes "Due to their relative faintness compared to their parent stars, most known exoplanets have been discovered using indirect detection methods – that is, detecting the effects they have rather than observing them directly. There are numerous indirect methods that have proven useful in the detection of exoplanets and now yet another, which relies on Einstein's special theory of relativity (abstract), has joined the list with the discovery of an exoplanet known as Kepler-76b."
ananyo writes "Researchers hoping to get '2' as the answer for a long-sought proof involving pairs of prime numbers are celebrating the fact that a mathematician has wrestled the value down from infinity to 70 million. That goal is the proof to a conjecture concerning prime numbers. Primes abound among smaller numbers, but they become less and less frequent as one goes towards larger numbers. But exceptions exist: the 'twin primes,' which are pairs of prime numbers that differ in value by 2. The twin prime conjecture says that there is an infinite number of such twin pairs. Some attribute the conjecture to the Greek mathematician Euclid of Alexandria, which would make it one of the oldest open problems in mathematics. The new result, from Yitang Zhang of the University of New Hampshire in Durham, finds that there are infinitely many pairs of primes that are less than 70 million units apart. He presented his research on 13 May to an audience of a few dozen at Harvard University in Cambridge, Massachusetts. Although 70 million seems like a very large number, the existence of any finite bound, no matter how large, means that that the gaps between consecutive numbers don't keep growing forever."
kkleiner writes "The first NeuroGaming Conference and Expo took place at the beginning of May to showcase the convergent technologies that are paving the way toward gaming with your mind. Tech news has been dominated with stories about Google Glass and the Oculus Rift, which was on display for attendees to test out. Other technologies that utilize EEG are opening up possibilities of a controller-free gaming experience into virtual realities with unlimited potential. 'Deeper questions surrounding the morality of neurogames will be sure to stir debate. As virtual reality technology inches closer to lifelike resolution, should gamers simulate themselves as characters engaged in acts of violence or criminal activity? It’s unpredictable what these games could uncover about the user as neurogames gain insight into a users’ psyche and how they respond to stimuli at a subconscious level. For instance, a game could uncover how its user particularly enjoys shooting at civilians in gameplay. Games might even become expert at diagnosing psychiatric disorders. As computers become exponentially more powerful, game resolution could fully mimic our ever-present reality.'"