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'Thermoelectrics' Could One Day Power Cars 174 174

sciencehabit writes: "Fossil fuels power modern society by generating heat, but much of that heat is wasted. Researchers have tried to reclaim some of it with semiconductor devices called thermoelectrics, which convert the heat into power. But they remain too inefficient and expensive to be useful beyond a handful of niche applications. Now, scientists in Illinois report that they have used a cheap, well-known material to create the most heat-hungry thermoelectric so far (abstract). In the process, the researchers say, they learned valuable lessons that could push the materials to the efficiencies needed for widespread applications. If that happens, thermoelectrics could one day power cars and scavenge energy from myriad engines, boilers, and electrical plants."

Astronomers Solve Puzzle of the Mountains That Fell From Space 51 51

KentuckyFC (1144503) writes "Iapetus, Saturn's third largest moon, was first photographed by the Cassini spacecraft on 31 December 2004. The images created something of a stir. Clearly visible was a narrow, steep ridge of mountains that stretch almost halfway around the moon's equator. The question that has since puzzled astronomers is how this mountain range got there. Now evidence is mounting that this mountain range is not the result of tectonic or volcanic activity, like mountain ranges on other planets. Instead, astronomers are increasingly convinced that this mountain range fell from space. The latest evidence is a study of the shape of the mountains using 3-D images generated from Cassini data. They show that the angle of the mountainsides is close to the angle of repose, that's the greatest angle that a granular material can form before it landslides. That's not proof but it certainly consistent with this exotic formation theory. So how might this have happened?

Astronomers think that early in its life, Iapetus must have been hit by another moon, sending huge volumes of ejecta into orbit. Some of this condensed into a new moon that escaped into space. However, the rest formed an unstable ring that gradually spiraled in towards the moon, eventually depositing the material in a narrow ridge around the equator. Cassini's next encounter with Iapetus will be in 2015 which should give astronomers another chance to study the strangest mountain range in the Solar System."

Your StarCraft II Potential Peaked At Age 24 103 103

An anonymous reader writes "StarCraft II is popular among competitive gamers for having the depth necessary to reward differences in skill. A new study has found that your ability keep up with the game's frantic pace starts to decline at age 24. This is relevant to more than just StarCraft II players: 'While many high-performance athletes start to show age-related declines at a young age, those are often attributed to physical as opposed to brain aging. ... While previous lab tests have shown faster reaction times for simple individual tasks, it was never clear how much relevance those had to complex, real-world tasks such as driving. Thompson noted that Starcraft is complex and quite similar to real-life tasks such as managing 911 calls at an emergency dispatch centre, so the findings may be directly relevant. However, game performance was much easier to analyze than many real-life situations because the game generates detailed logs of every move. In a way, Thompson said, the study is a good demonstration of what kinds of insights can be gleaned from the "cool data sets" generated by our digital lives.'"

Paper Microscope Magnifies Objects 2100 Times and Costs Less Than $1 89 89

ananyo writes: "If ever a technology were ripe for disruption, it is the microscope. Microscopes are expensive and need to be serviced and maintained. Unfortunately, one important use of them is in poor-world laboratories and clinics, for identifying pathogens, and such places often have small budgets and lack suitably trained technicians. Now Manu Prakash, a bioengineer at Stanford University, has designed a microscope made almost entirely of paper, which is so cheap that the question of servicing it goes out of the window. Individual Foldscopes are printed on A4 sheets of paper (ideally polymer-coated for durability). A pattern of perforations on the sheet marks out the 'scope's components, which are colour-coded in a way intended to assist the user in the task of assembly. The Foldscope's non-paper components, a poppy-seed-sized spherical lens made of borosilicate or corundum, a light-emitting diode (LED), a watch battery, a switch and some copper tape to complete the electrical circuit, are pressed into or bonded onto the paper. (The lenses are actually bits of abrasive grit intended to roll around in tumblers that smooth-off metal parts.) A high-resolution version of this costs less than a dollar, and offers a magnification of up to 2,100 times and a resolving power of less than a micron. A lower-spec version (up to 400x magnification) costs less than 60 cents."

U.S. Biomedical Research 'Unsustainable' Prominent Researchers Warn 135 135

sciencehabit (1205606) writes "The U.S. biomedical science system 'is on an unsustainable path' and needs major reform, four prominent researchers say. Researchers should 'confront the dangers at hand,' the authors write, and 'rethink' how academic research is funded, staffed, and organized. Among other issues, the team suggests that the system may be producing too many new researchers and forcing them to compete for a stagnating pool of funding."

Saturn May Have Given Birth To a Baby Moon 71 71

astroengine (1577233) writes "NASA's Saturn-orbiting Cassini spacecraft has imaged something peculiar on the outermost edge of the gas giant's A-ring. A bright knot, or arc, has been spotted 20 percent brighter than the surrounding ring material and astronomers are interpreting it as a gravitational disturbance caused by a tiny moon. "We have not seen anything like this before," said Carl Murray of Queen Mary University of London. 'We may be looking at the act of birth, where this object is just leaving the rings and heading off to be a moon in its own right.'"

Climate Scientist: Climate Engineering Might Be the Answer To Warming 343 343

Lasrick (2629253) writes "Tom Wigley is one of the world's top climate scientists, and in this interview he explains his outspoken support for both nuclear energy and research into climate engineering. Wigley was one of the first scientists to break the taboo on public discussion of climate engineering as a possible response to global warming; in a 2006 paper in the journal Science, he proposed a combined geoengineering-mitigation strategy that would address the problem of increasing ocean acidity, as well as the problem of climate change. In this interview, he argues that renewable energy alone will not be sufficient to address the climate challenge, because it cannot be scaled up quickly and cheaply enough, and that opposition to nuclear power 'threatens humanity's ability to avoid dangerous climate change.'"

Carpenter Who Cut Off His Fingers Makes "Robohand" With 3-D Printer 91 91

mpicpp (3454017) writes with the ultimate DIY story about a carpenter in South Africa who lost his fingers in an accident, and now runs a company that makes mechanical prosthetics with 3D printing technology. "'I was in a position to see exactly what happens in the human hand. I got the basics of what it's all about and thought yeah, I'll make my own.' Richard van As is recalling the moment in May 2011 when he sat in a Johannesburg hospital waiting to hear if his fingers could be stitched back on. Just an hour earlier, he had been in his carpentry workshop sawing wood when the saw slipped and ripped diagonally through the four fingers on his right hand....After days of scouring the Internet he couldn't find anywhere to buy a functional prosthetic finger and he was astonished at the cost of prosthetic hands and limbs which began in the tens of thousands of dollars. But his online surfing paid off as it brought him to an amateur video posted by a mechanical effects artist in Washington State, by the name of Ivan Owen. Together, the pair developed a mechanical finger for van As, but their partnership has also gone on to benefit countless hand and arm amputees around the globe, through the birth of the company "Robohand." Officially launched in January 2012, Robohand creates affordable mechanical prosthetics through the use of 3D printers. Not only that, but it has made its designs open source, so that anyone with access to such printers can print out fingers, hands and now arms as well.'"

Using Supercomputers To Predict Signs of Black Holes Swallowing Stars 31 31

aarondubrow (1866212) writes "A 'tidal disruption' occurs when a star orbits too close to a black hole and gets sucked in. The phenomenon is accompanied by a bright flare with a unique signature that changes over time. Researchers at the Georgia Institute of Technology are using Stampede and other NSF-supported supercomputers to simulate tidal disruptions in order to better understand the dynamics of the process. Doing so helps astronomers find many more possible candidates of tidal disruptions in sky surveys and will reveal details of how stars and black holes interact."

The Best Way To Watch the "Blood Moon" Tonight 146 146

An anonymous reader writes "People on the West Coast should be able to watch the beginning of the upcoming total lunar eclipse tonight at 10:20 pm. The entirety of the moon surface will be in Earth's shadow and start to glow red a couple hours later, a little after midnight. From the article: 'A lunar eclipse occurs when the sun, moon, and Earth align so that Earth's shadow falls across the moon's surface. Monday night's lunar eclipse is a total eclipse, which means Earth's shadow will cover the moon completely. The moon won't be blacked out by our planet's shadow. Instead, it will take on a reddish hue — anywhere from a bright copper to the brownish red of dried blood.'"

NASA To Send SpaceX Resupply Capsule To ISS Despite Technical Problems 71 71

An anonymous reader writes "Despite a critical backup computer failing on the ISS Friday, an unmanned SpaceX rocket will launch from Cape Canaveral at 4:58 p.m. Monday with more than 2 tons of supplies for the space station. From the article: 'The U.S. National Aeronautics and Space Administration decided to proceed with its resupply mission, despite technical problems with its computer in the International Space Station (ISS), as it needed to deliver necessary supplies.'"

Mathematicians Use Mossberg 500 Pump-Action Shotgun To Calculate Pi 311 311

KentuckyFC (1144503) writes "Imagine the following scenario. The end of civilization has occurred, zombies have taken over the Earth and all access to modern technology has ended. The few survivors suddenly need to know the value of pi and, being a mathematician, they turn to you. What do you do? According to a couple of Canadian mathematicians, the answer is to repeatedly fire a Mossberg 500 pump action shotgun at a square aluminum target about 20 meters away. Then imagine that the square is inscribed with an arc drawn between opposite corners that maps out a quarter circle. If the sides of the square are equal to 1, then the area of the quarter circle is pi/4. Next, count the number of pellet holes that fall inside the area of the quarter circle as well as the total number of holes. The ratio between these is an estimate of the ratio between the area of the quarter circle and the area of a square, or in other words pi/4. So multiplying this number by 4 will give you an estimate of pi. That's a process known as a Monte Carlo approximation and it is complicated by factors such as the distribution of the pellets not being random. But the mathematicians show how to handle these too. The result? According to this method, pi is 3.13, which is just 0.33 per cent off the true value. Handy if you find yourself in a post-apocalyptic world."

Jenny McCarthy: "I Am Not Anti-Vaccine'" 588 588

Hugh Pickens DOT Com (2995471) writes "Jenny McCarthy is claiming she has been misunderstood and is not anti-vaccine. In an op-ed in the Chicago Sun-Times, McCarthy tries to ignore everything she's been saying about vaccines for years and wipe the record clean. 'People have the misconception that we want to eliminate vaccines,' McCarthy told Time magazine science editor Jeffrey Kluger in 2009. 'Please understand that we are not an anti-vaccine group. We are demanding safe vaccines. We want to reduce the schedule and reduce the toxins.' But Kluger points out that McCarthy left the last line out of that quotation: 'If you ask a parent of an autistic child if they want the measles or the autism, we will stand in line for the f--king measles.' That missing line rather changes the tone of her position considerably, writes Phil Plait and is a difficult stance to square with someone who is not anti-vaccine. As Kluger points out, her entire premise is false; since vaccines don't cause autism, no one has to make the choice between measles (and other preventable, dangerous diseases) and autism. Something else McCarthy omitted from her interview with Kluger: 'I do believe sadly it's going to take some diseases coming back to realize that we need to change and develop vaccines that are safe,' said McCarthy. 'If the vaccine companies are not listening to us, it's their f*cking fault that the diseases are coming back. They're making a product that's sh*t. If you give us a safe vaccine, we'll use it. It shouldn't be polio versus autism.' Kluger finishes with this: 'Jenny, as outbreaks of measles, mumps and whooping cough continue to appear in the U.S.—most the result of parents refusing to vaccinate their children because of the scare stories passed around by anti-vaxxers like you—it's just too late to play cute with the things you've said.' For many years McCarthy has gone on and on and on and on and on and on about vaccines and autism. 'She can claim all she wants that she's not anti-vax,' concludes Plait, 'but her own words show her to be wrong.'"

Pluto May Have Deep Seas and Ancient Tectonic Faults 47 47

astroengine (1577233) writes "In July 2015 we get our first close look at the dwarf planet Pluto and its moon, Charon — a fact that has scientists hypothesizing more than ever about what we might see there. One of the latest ideas put forward is that perhaps the collision that likely formed Pluto and Charon heated the interior of Pluto enough to give it an internal liquid water ocean, which also gave the small world a short-lived plate tectonics system, like that of Earth."

Russia Wants To Establish a Permanent Moon Base 313 313

An anonymous reader writes "Having established its presence in the Crimean Peninsula, Russia is now shooting for a bit loftier goal, a permanent Moon base. 'As reported by the Voice of Russia, Russian Deputy Prime Minister Dmitry Rogozin told the government daily Rossiiskaya Gazeta that establishing a permanent Moon base has become one of the country's top space priorities. "The moon is not an intermediate point in the [space] race, it is a separate, even a self-contained goal," Rogozin reportedly said. "It would hardly be rational to make some ten or twenty flights to the moon, and then wind it all up and fly to the Mars or some asteroids."'"

UN: Renewables, Nuclear Must Triple To Save Climate 433 433

An anonymous reader writes "On the heels of a study that concluded there was less than a 1% chance that current global warming could be simple fluctuations, U.N. scientists say energy from renewables, nuclear reactors and power plants that use emissions-capture technology needs to triple in order keep climate change within safe limits. From The Washington Post: 'During a news conference Sunday, another co-chair, Rajendra K. Pachauri of India, said the goal of limiting a rise in global temperatures "cannot be achieved without cooperation." He added, "What comes out very clearly from this report is that the high-speed mitigation train needs to leave the station soon, and all of global society needs to get on board."'"

Ask Slashdot: Are You Apocalypse-Useful? 737 737

An anonymous reader writes: "Young people, when choosing a profession, are often told to 'do what you love.' That's why we have experts in such abstruse fields as medieval gymel. But let's talk hypotheticals: if there's a worldwide catastrophe in which civilization is interrupted, somebody specializing in gymel wouldn't provide much use to fellow survivors. In a post-apocalypse world, medical doctors would be useful, as would most scientists and engineers. The bad news for Slashdotters is that decades without computers would render computer science and related professions useless. What do you consider to be the most useful and mostly useless post-apocalypse professions? How long would it take for society to rebuild enough for your profession to be useful?"

Racing To Contain Ebola 112 112

An anonymous reader writes "Ebola, one of the most deadly diseases known to humans, started killing people in Guinea a few months ago. There have been Ebola outbreaks in the past, but they were contained. The latest outbreak has now killed over 100 people across three countries. One of the biggest difficulties in containing an outbreak is knowing where the virus originated and how it spread. That problem is being addressed right now by experts and a host of volunteers using Open Street Map. 'Zoom in and you can see road networks and important linkages between towns and countries, where there were none before. Overlay this with victim data, and it can help explain the rapid spread. Click on the colored blobs and you will see sites of confirmed deaths, suspected cases that have been overturned, sites where Ebola testing labs have been setup or where the emergency relief teams are currently located.'"

CSIRO Scientists' Aquaculture Holy Grail: Fish-Free Prawn Food 116 116

An anonymous reader writes "A team of CSIRO scientists has discovered the holy grail of aquaculture by developing the world's first fish-free prawn food: Novaq. According to the article there is intense global interest in Novaq because it solves one of the farmed prawn industry's biggest problems — its reliance on wild fisheries as a core ingredient in prawn food. The Novaq formula is a closely guarded secret, but it is known that the product is based on microscopic marine organisms. Not only will the new feed introduce greater sustainability into a growth industry but prawns fed on the new diet grow 40% faster and are healthier and more robust."

GM Names Names, Suspends Two Engineers Over Ignition-Switch Safety 236 236

cartechboy (2660665) writes "GM said it has placed two engineers on paid leave in connection with its massive recall probe of 2 million vehicles. Now, GM is asking NASA to advise on whether those cars are safe to drive even with the ignition key alone. Significantly, individual engineers now have their names in print and face a raft of inquiries what they did or didn't know, did or didn't do, and when. A vulnerability for GM: One engineer may have tried to re-engineer the faulty ignition switch without changing the part number—an unheard-of practice in the industry. Is it a good thing that people who engineer for a living can now get their names on national news for parts designed 10 years ago? The next time your mail goes down, should we know the name of the guy whose code flaw may have caused that?"

Cost Skyrockets For United States' Share of ITER Fusion Project 174 174

sciencehabit writes: "ITER, the international fusion experiment under construction in Cadarache, France, aims to prove that nuclear fusion is a viable power source by creating a 'burning plasma' that produces more energy than the machine itself consumes. Although that goal is at least 20 years away, ITER is already burning through money at a prodigious pace. The United States is only a minor partner in the project, which began construction in 2008. But the U.S. contribution to ITER will total $3.9 billion — roughly four times as much as originally estimated — according to a new cost estimate released yesterday. That is about $1.4 billion higher than a 2011 cost estimate, and the numbers are likely to intensify doubts among some members of Congress about continuing the U.S. involvement in the project."
The Military

Fruit Flies, Fighter Jets Use Similar Evasive Tactics When Attacked 65 65

vinces99 writes: "When startled by predators, tiny fruit flies respond like fighter jets – employing screaming-fast banked turns to evade attacks. Researchers at the University of Washington used an array of high-speed video cameras operating at 7,500 frames a second to capture the wing and body motion of flies after they encountered a looming image of an approaching predator (abstract). 'We discovered that fruit flies alter course in less than one one-hundredth of a second, 50 times faster than we blink our eyes, and which is faster than we ever imagined.' In the midst of a banked turn, the flies can roll on their sides 90 degrees or more, almost flying upside down at times, said Florian Muijres, a UW postdoctoral researcher and lead author of the paper. 'These flies normally flap their wings 200 times a second and, in almost a single wing beat, the animal can reorient its body to generate a force away from the threatening stimulus and then continues to accelerate,' he said."

Mathematical Proof That the Cosmos Could Have Formed Spontaneously From Nothing 612 612

KentuckyFC writes: "One of the great theories of modern cosmology is that the universe began in a Big Bang. It's backed up by numerous lines of evidence, such as the cosmic microwave background and so on. But what caused the Big Bang, itself? For many years, cosmologists have fallen back on the idea that the universe formed spontaneously; that the Big Bang was result of quantum fluctuations in which the universe came into existence from nothing. But is this compatible with what we know about the Big Bang itself and the theories that describe it? Now cosmologists have come up with the first rigorous proof that the Big Bang could indeed have occurred spontaneously and produced the universe we see today. The proof is developed within a mathematical framework known as the Wheeler-DeWitt equation. Heisenberg's uncertainty principle allows a small region of empty space to come into existence probabilistically due to quantum fluctuations. Most of the time, such a bubble will collapse and disappear. The question these scientists address is whether a bubble could also expand exponentially to allow a universe to form in an irreversible way. Their proof (PDF) shows that this is indeed possible. There is an interesting corollary: the role of the cosmological constant is played by a property known as the quantum potential. This is a property introduced in the 20th century by the physicist David Bohm, which has the effect of making quantum mechanics deterministic while reproducing all of its predictions. It's an idea that has never caught on. Perhaps that will change now."

NASA Setting Up $250,000 Mars Lander Competition 44 44

coondoggie (973519) writes "NASA this week said it is exploring setting up one of its iconic Centennial Challenge competitions for companies to build a robotic Mars landing spacecraft. NASA said it would expect to have about $250,000 worth of prize money for a robotic spacecraft that could land on the Red Planet, retrieve a sample and return it to orbit."

Nat Geo Writer: Science Is Running Out of "Great" Things To Discover 292 292

Hugh Pickens DOT Com (2995471) writes "John Horgan writes in National Geographic that scientists have become victims of their own success and that 'further research may yield no more great revelations or revolutions, but only incremental, diminishing returns.' The latest evidence is a 'Correspondence' published in the journal Nature that points out that it is taking longer and longer for scientists to receive Nobel Prizes for their work. The trend is strongest in physics. Prior to 1940, only 11 percent of physics prizes were awarded for work more than 20 years old but since 1985, the percentage has risen to 60 percent. If these trends continue, the Nature authors note, by the end of this century no one will live long enough to win a Nobel Prize, which cannot be awarded posthumously and suggest that the Nobel time lag 'seems to confirm the common feeling of an increasing time needed to achieve new discoveries in basic natural sciences—a somewhat worrisome trend.' One explanation for the time lag might be the nature of scientific discoveries in general—as we learn more it takes more time for new discoveries to prove themselves.

Researchers recently announced that observations of gravitational waves provide evidence of inflation, a dramatic theory of cosmic creation. But there are so many different versions of 'inflation' theory that it can 'predict' practically any observation, meaning that it doesn't really predict anything at all. String theory suffers from the same problem. As for multiverse theories, all those hypothetical universes out there are unobservable by definition so it's hard to imagine a better reason to think we may be running out of new things to discover than the fascination of physicists with these highly speculative ideas. According to Keith Simonton of the University of California, 'the core disciplines have accumulated not so much anomalies as mere loose ends that will be tidied up one way or another.'"

Can the ObamaCare Enrollment Numbers Be Believed? 723 723

An anonymous reader writes "When the Obama administration announced on April 1 that an estimated 7.1 million had signed up for ObamaCare by the end of March, it seemed a nearly impossible achievement. To reach 7.1 million, sign-ups had to rocket up by 67% in just one month. That's astounding enough, but an IBD review of existing ObamaCare enrollment data shows that the mathematical challenge of reaching 7.1 million sign-ups was even tougher."

Scientists/Actress Say They Were 'Tricked' Into Geocentric Universe Movie 642 642

EwanPalmer (2536690) writes "Three scientists and Star Trek actress Kate Mulgrew say they were duped into appearing in a controversial documentary which claims the Earth is the center of the Universe. The Principle, a film which describes itself as 'destined to become one of the most controversial films of our time', argues the long-debunked theory of geocentrism – where the earth is the center of the Universe and the Sun resolves around it – is true and Nasa has tried to cover it up. The film features the narration of actress Mulgrew, who played the part of captain Kathryn Janeway in Star Trek Voyager, as well as three prominent scientists."

The Amoeba That Eats Human Intestines, Cell By Cell 71 71

sciencehabit (1205606) writes "Entamoeba histolytica is a tiny pathogen that takes a terrible toll. The single-celled parasite—an amoeba about a tenth the size of a dust mite—infects 50 million people worldwide and kills as many as 100,000 each year. Now, a new report reveals how the microbe does its deadly damage: by eating cells alive, piece by piece. The finding offers a potential target for new drugs to treat E. histolytica infections, and it transforms researchers' understanding of how the parasite works."

LHCb Confirms Existence of Exotic Hadrons 99 99

An anonymous reader sends this news from CERN: "The Large Hadron Collider beauty (LHCb) collaboration today announced results that confirm the existence of exotic hadrons – a type of matter that cannot be classified within the traditional quark model. Hadrons are subatomic particles that can take part in the strong interaction – the force that binds protons inside the nuclei of atoms. Physicists have theorized since the 1960s, and ample experimental evidence since has confirmed, that hadrons are made up of quarks and antiquarks that determine their properties. A subset of hadrons, called mesons, is formed from quark-antiquark pairs, while the rest – baryons – are made up of three quarks. ... The Belle Collaboration reported the first evidence for the Z(4430) in 2008. They found a tantalizing peak in the mass distribution of particles that result from the decays of B mesons. Belle later confirmed the existence of the Z(4430) with a significance of 5.2 sigma on the scale that particle physicists use to describe the certainty of a result. LHCb reports a more detailed measurement of the Z(4430) that confirms that it is unambiguously a particle, and a long-sought exotic hadron at that. They analyzed more than 25,000 decays of B mesons selected from data from 180 trillion (180x10^12) proton-proton collisions in the Large Hadron Collider."

MtGox's "Transaction Malleability" Claim Dismissed By Researchers 92 92

Martin S. (98249) writes "The Register reports on a paper at the arXiv (abstract below) by Christian Decker and Roger Wattenhofer analyzing a year's worth of Bitcoin activity to reach the conclusion that MtGox's claims of losing their bitcoins because of the transaction malleability bug are untrue. The Abstract claims: 'In Bitcoin, transaction malleability describes the fact that the signatures that prove the ownership of bitcoins being transferred in a transaction do not provide any integrity guarantee for the signatures themselves. ... In this work we use traces of the Bitcoin network for over a year preceding the filing to show that, while the problem is real, there was no widespread use of malleability attacks before the closure of MtGox.'" Quoting El Reg: "By extracting transaction keys from the transaction set, the researchers say, they were able to identify more than 35,000 transaction conflicts and more than 29,000 “confirmed attacks” covering more than 300,000 Bitcoins." And less than 6000 were actually successful.

Australia Declares Homeopathy Nonsense, Urges Doctors to Inform Patients 408 408

jones_supa (887896) writes "Homeopathy is a 200-year-old form of alternative medicine based on the principle that substances that produce symptoms in a healthy person can be used to treat similar symptoms in a sick person. The National Health and Medical Research Council of Australia has officially declared that homeopathic remedies are useless for human health. The body today released a guide for doctors (PDF) on how to talk to their patients about the lack of evidence for many such therapies. Doctors will also be told to warn patients of possible interactions between alternative and conventional medicines. On top of that, the council has produced a 300-page draft report that reviews the evidence for homoeopathy in treating 68 clinical conditions. It concludes 'there is no reliable evidence that homoeopathy is effective for treating health conditions'.

Representing the opposite viewpoint, Australian Homeopathic Association spokesman Greg Cope said he was disappointed at the narrow evidence relied on by the NHMRC in its report. 'What they have looked at is systematic trials for named conditions when that is not how homeopathy works,' he said. Homeopathy worked on the principle of improving a person's overall health and wellness, and research such as a seven-year study conducted in Switzerland was a better measure of its usefulness, he added. There are about 10,000 complementary medicine products sold in Australia but most consumers are unaware they are not evaluated by the domestic medicines safety watchdog before they are allowed on the market."

Last Month's "Planet X" Announcement Was Probably Wrong 44 44

KentuckyFC (1144503) writes "Last month, astronomers announced the discovery of the most distant body in the Solar System, a dwarf planet called 2012VP113. They also said this body's orbit was strangely aligned with several other dwarf planets in the Kuiper Belt and that this could be the result of these bodies being herded by a much larger Planet X even further from the Sun. They calculated that this hidden planet could be between 2 and 15 times the mass of the Earth and orbiting at a distance of between 200 AU and 300 AU, an announcement that triggered excited headlines around the world. Now it looks as though these predictions were wildly optimistic. It turns out that the position of Planet X can be constrained more tightly using orbital measurements of other planets. And when this data is added into the mix, Planet X can only only orbit at much greater distances, if it exists at all. The new calculations suggest that a planet twice the mass of Earth cannot orbit any closer than about 500 AU. And a planet 15 times the mass of Earth must be at least 1000 AU distant. What's more, the New Horizons mission currently on its way to Pluto, should constrain the distance to beyond 4700 AU. So any Planet X hunters out there are likely to be disappointed."
The Military

Navy Creates Fuel From Seawater 256 256

New submitter lashicd sends news that the U.S. Naval Research Laboratory has announced a successful proof-of-concept demonstration of converting seawater to liquid hydrocarbon fuel. They used seawater to provide fuel for a small replica plan running a two-stroke internal combustion engine. "Using an innovative and proprietary NRL electrolytic cation exchange module (E-CEM), both dissolved and bound CO2 are removed from seawater at 92 percent efficiency by re-equilibrating carbonate and bicarbonate to CO2 and simultaneously producing H2. The gases are then converted to liquid hydrocarbons by a metal catalyst in a reactor system. ... NRL has made significant advances in the development of a gas-to-liquids (GTL) synthesis process to convert CO2 and H2 from seawater to a fuel-like fraction of C9-C16 molecules. In the first patented step, an iron-based catalyst has been developed that can achieve CO2 conversion levels up to 60 percent and decrease unwanted methane production in favor of longer-chain unsaturated hydrocarbons (olefins). These value-added hydrocarbons from this process serve as building blocks for the production of industrial chemicals and designer fuels."

Isolated Tribes Die Shortly After We Meet Them 351 351

Daniel_Stuckey writes: "It's a story we all know — Christopher Columbus discovers America, his European buddies follow him, they meet the indigenous people living there, they indigenous people die from smallpox and guns and other unknown diseases, and the Europeans get gold, land, and so on. It's still happening today in Brazil, where 238 indigenous tribes have been contacted in the last several decades, and where between 23 and 70 uncontacted tribes are still living. A just-published report that takes a look at what happens after the modern world comes into contact with indigenous peoples isn't pretty: Of those contacted, three quarters went extinct. Those that survived saw mortality rates up over 80 percent. This is grim stuff."

Study: Video Gamer Aggression Result of Game Experience, Not Violent Content 180 180

An anonymous reader writes "A new study published in the March edition of the Journal of Personality and Social Psychology indicates that a gamer's experience of a video game and not the content of the game itself can give rise to violent behavior. In other words, 'researchers found it was not the narrative or imagery, but the lack of mastery of the game's controls and the degree of difficulty players had completing the game that led to frustration.' Based on their findings, researchers note that even games like Tetris and Candy Crush can inspire violent behavior more so than games like World of Warcraft or Grand Theft Auto if they are poorly designed and difficult to play."

Zombie Plants Help To Spread Bacterial Pathogen 38 38

bmahersciwriter writes: "We've all heard stories about how parasites can 'zombify' organisms, getting them to mindlessly protect a brood or infect their peers. Now UK researchers have figured out how one bacterial pathogen co-opts the behavior of a plant, causing it to attract sap-sucking insects that help the bacteria spread to other plants. From the story in Nature News: 'The plant appears alive, but it's only there for the good of the pathogen,' says plant pathologist Saskia Hogenhout from the John Innes Centre in Norwich, UK. 'In an evolutionary sense, the plant is dead and will not produce offspring.' 'Many might balk at the concept of a zombie plant because the idea of plants behaving is strange,' says David Hughes, a parasitologist at Pennsylvania State University in University Park. 'But they do, and since they do, why wouldn't parasites have evolved to take over their behavior, as they do for ants and crickets?'"

Rover Curiosity Discovers Australia-Shaped Rock On Mars 99 99

astroengine writes: "NASA's Mars rover Curiosity has begun science operations in a new area of study nicknamed 'the Kimberly' after the Western Australian region. But in a new image uploaded to the Mars Science Laboratory raw image archive, it seems 'the Kimberly' is a little more Australian than mission managers originally thought. As spotted by @CoUdErMaNn on Twitter, Curiosity's Navcam photographed a rather interesting-looking rock formation just in front of the rover. The rock, which appears to have been formed through some erosion process, will likely fascinate geologists for some time. But at first glance the rock also appears to take the shape of Australia."

Stem-Cell Research Funding Institute Is Shuttered 86 86

An anonymous reader writes "The National Institutes of Health, the top funder of biomedical research in the U.S., has closed a program designed to bring induced pluripotent stem cells (iPS cells) from the lab to the clinic. It has made no public mention of the closure, but the website has been deleted and Nature News reports that the center director, Mahendra Rao, resigned his post in frustration after the program allocated funds to only one clinical trial in its last round of funding."

For the First Time, Organ Regenerated Inside a Living Animal 94 94

ananyo (2519492) writes "Scientists at Edinburgh University have successfully persuaded an organ to regenerate inside an animal. As they report in the journal Development, they have treated, in mice, an organ called the thymus, which is a part of the immune system that runs down in old age. Instead of adding stem cells they have stimulated their animals' thymuses to make more of a protein called FOXN1. This is a transcription factor (a molecular switch that activates genes). The scientists knew from earlier experiments that FOXN1 is important for the embryonic development of the thymus, and speculated that it might also rejuvenate the organ in older animals. They bred a special strain of mice whose FOXN1 production could be stimulated specifically in the thymus by tamoxifen, a drug more familiar as a treatment for breast cancer. In one-year-olds, stimulating FOXN1 production in the thymus caused it to become 2.7 times bigger within a month. In two-year-olds the increase was 2.6 times. Moreover, when the researchers studied the enlarged thymuses microscopically, and compared them with those from untreated control animals of the same ages, they found that the organs' internal structures had reverted to their youthful nature."

Ancient Shrimp-Like Creature Has Oldest Known Circulatory System 35 35

sciencehabit (1205606) writes "A 520-million-year-old shrimp-like creature known as Fuxianhuia protensa has the oldest known cardiovascular system, researchers report. It was both modern and unsophisticated. A simple, tubelike heart was buried in the creature's belly — or thorax — and shot single blood vessels into the 20 or so segments of its primitive body. In contrast, x-ray scans of the specimen revealed profoundly intricate channels in the head and neck. The brain was well supplied with looping blood vessels, which extended branches into the arthropod's alienlike eyestalks and antennae and rivaled the complexity of today's crustaceans. From this Gordian architecture, the researchers can now speculate about the critter's lifestyle. Its brain required abundant oxygen, so it presumably did a fair amount of thinking."

Online Skim Reading Is Taking Over the Human Brain 224 224

Hugh Pickens DOT Com (2995471) writes "Michael S. Rosenwald reports in the Washington Post that, according to cognitive neuroscientists, humans seem to be developing digital brains with new circuits for skimming through the torrent of information online at the expense of traditional deep reading circuitry... Maryanne Wolf, one of the world's foremost experts on the study of reading, was startled last year to discover her brain was apparently adapting, too. After a day of scrolling through the Web and hundreds of e-mails, she sat down one evening to read Hermann Hesse's challenging novel The Glass Bead Game. 'I'm not kidding: I couldn't do it,' says Wolf. 'It was torture getting through the first page. I couldn't force myself to slow down so that I wasn't skimming, picking out key words, organizing my eye movements to generate the most information at the highest speed. I was so disgusted with myself.'

The brain was not designed for reading and there are no genes for reading like there are for language or vision. ... Before the Internet, the brain read mostly in linear ways — one page led to the next page, and so on. The Internet is different. With so much information, hyperlinked text, videos alongside words and interactivity everywhere, our brains form shortcuts to deal with it all — scanning, searching for key words, scrolling up and down quickly. This is nonlinear reading, and it has been documented in academic studies. ... Some researchers believe that for many people, this style of reading is beginning to invade our ability to deal with other mediums. 'We're spending so much time touching, pushing, linking, scrolling and jumping through text that when we sit down with a novel, your daily habits of jumping, clicking, linking is just ingrained in you,' says Andrew Dillon."

Elite Violinists Can't Distinguish Between a Stradivarius and a Modern Violin 469 469

sciencehabit (1205606) writes "If you know only one thing about violins, it is probably this: A 300-year-old Stradivarius supposedly possesses mysterious tonal qualities unmatched by modern instruments. However, even elite violinists cannot tell a Stradivarius from a top-quality modern violin, a new double-blind study suggests. Like the sound of coughing during the delicate second movement of Beethoven's violin concerto, the finding seems sure to annoy some people, especially dealers who broker the million-dollar sales of rare old Italian fiddles. But it may come as a relief to the many violinists who cannot afford such prices."

NASA Laying Foundation For Jupiter Moon Space Mission 100 100

coondoggie (973519) writes "NASA recently began laying out the groundwork for the technology it will need to fly an unmanned mission to Jupiter's intriguing moon Europa. Scientists say Europa — which orbits the planet Jupiter about 778 million km (484 million miles) from the Sun — could support life because it might have an ocean of liquid water under its miles-thick frozen crust. NASA said in December the Hubble Space Telescope observed water vapor above the frigid south polar region of Jupiter's moon Europa, providing the first strong evidence of water plumes erupting off the moon's surface."

How To Build a Quantum Telescope 60 60

KentuckyFC (1144503) writes "The resolving power of telescopes is limited by the diffraction limit, a natural bound on resolution caused by the way light diffracts as it passes through a lens. But in recent years, physicists have worked out how to use quantum techniques to beat the diffraction limit. The trick is to create a pair of entangled photons, use one to illuminate the target and the other to increase the information you have about the first. All this is possible in the lab because physicists can use their own sources of light. Indeed, last month, physicists unveiled the first entanglement-enhanced microscope that beats the diffraction limit. But what about astronomy where the light comes from distant astrophysical sources? Now one physicist has worked out how to use quantum techniques to beat the diffraction limit in telescopes too. Her idea is to insert a crystalline sheet of excited atoms into the aperture of the telescope. When astrophysical photons hit this sheet, they generate an entangled pair of photons. One of these photons then passes through the telescope to create an image while the other is used to improve the information known about the first and so beat the diffraction limit. Of course, all this depends on improved techniques for increasing the efficiency of the process and removing noise that might otherwise swamp the astrophysical signal. But it's still the early days in the world of quantum imaging, and at least astronomers now know they're not going to be excluded from the fun."

Sand in the Brain: A Fundamental Theory To Model the Mind 105 105

An anonymous reader writes "In 1999, the Danish physicist Per Bak proclaimed to a group of neuroscientists that it had taken him only 10 minutes to determine where the field had gone wrong. Perhaps the brain was less complicated than they thought, he said. Perhaps, he said, the brain worked on the same fundamental principles as a simple sand pile, in which avalanches of various sizes help keep the entire system stable overall — a process he dubbed 'self-organized criticality.'"

Ties of the Matrix: An Exercise in Combinatorics 51 51

mikejuk (1801200) writes "The Matrix Reloaded started something when 'The Merovingian' wore a number of very flashy ties. The problem was that we thought we knew how many ways you can tie a tie. The number of ways had been enumerated in 2001 and the answer was that there were exactly 85 different ways but the enumeration didn't include the Matrix way of doing it. So how many "Merovingian" knots are there? The question is answered in a new paper, More ties than we thought [PDf], by Dan Hirsch, Meredith L. Patterson, Anders Sandberg and Mikael Vejdemo-Johansson. The methodology is based on the original enumeration and an interesting application of language theory. The idea is to create a programming language for tying ties and then work out how many programs there are. For single depth tucks there are 177,147 different sequences and hence knots. Of these there are 2046 winding patterns that take up to 11 moves, the same as the The Merovingian knot and other popular knots, and so these are probably practical with a normal length necktie."

Why Are We Made of Matter? 393 393

StartsWithABang (3485481) writes "The Universe began with equal amounts of matter and antimatter after the Big Bang, and yet when we look out at today's Universe, we find that, even on the largest scales, it's made of at least 99.999%+ matter and not antimatter. The problem of how we went from a matter-antimatter-symmetric Universe to the matter-dominated one we have today is known as baryogenesis, and is one of the greatest unsolved problems in physics. Where are we on the quest to understand it as of April, 2014? A wonderful and comprehensive recap is here."

To Reduce the Health Risk of Barbecuing Meat, Just Add Beer 179 179

PolygamousRanchKid (1290638) writes "Grilling meat gives it great flavour. This taste, though, comes at a price, since the process creates molecules called polycyclic aromatic hydrocarbons (PAHs) which damage DNA and thus increase the eater's chances of developing colon cancer. But a group of researchers led by Isabel Ferreira of the University of Porto, in Portugal, think they have found a way around the problem. When barbecuing meat, they suggest, you should add beer. The PAHs created by grilling form from molecules called free radicals which, in turn, form from fat and protein in the intense heat of this type of cooking. One way of stopping PAH-formation, then, might be to apply chemicals called antioxidants that mop up free radicals. And beer is rich in these, in the shape of melanoidins, which form when barley is roasted." (The paper on which this report is based, sadly paywalled.)
The Internet

How the Internet Is Taking Away America's Religion 1037 1037

pitchpipe (708843) points out a study highlighted by MIT's Technology Review, which makes the bold claim that "Using the Internet can destroy your faith. That's the conclusion of a study showing that the dramatic drop in religious affiliation in the U.S. since 1990 is closely mirrored by the increase in Internet use," and writes "I attribute my becoming an atheist to the internet, so what the study is saying supports my anecdote. If I hadn't been exposed to all of the different arguments about religion, etc., via the internet I would probably just be another person who identifies as religious but doesn't attend services. What do you think? Have you become more religious, less religious, or about the same since being on the internet? What if you've always had it?"