Beta
×

Welcome to the Slashdot Beta site -- learn more here. Use the link in the footer or click here to return to the Classic version of Slashdot.

Thank you!

Before you choose to head back to the Classic look of the site, we'd appreciate it if you share your thoughts on the Beta; your feedback is what drives our ongoing development.

Beta is different and we value you taking the time to try it out. Please take a look at the changes we've made in Beta and  learn more about it. Thanks for reading, and for making the site better!

Kevlar Protects Cables From Sharks, Experts Look For Protection From Shark Week

samzenpus posted about 2 months ago | from the just-when-you-thought-it-was-safe-to-turn-on-the-TV dept.

Shark 103

Brandon Butler writes As an ode to Shark Week: Sharks have been known to show an appetite for fiber cables underwater, and last week a Google official said to prevent sharks from wreaking havoc on the company's trans-Pacific fiber lines, it wraps them in Kevlar. It's believed that the emission of electrical currents from the fiber piping is mistaken by sharks occasionally as prey. In related news, a growing number of scientists are becoming disgruntled with the Discovery network's sensationalist programs. Many shark experts are refusing to work with the channel after such programs as their Megalodon "documentary" and their latest Shark of Darkness (not to mention the mermaid special, which was sadly missing a singing crab.)

Sockatume writes The Verge has an article on Discovery's hugely successful Shark Week, discussing how the increasing sensationalist special event misrepresents science and exploits nature and local history for shock value. Scientists who appeared in and were misrepresented by the channel's programming are beginning to encourage their peers to stay away from the Discovery network, which stands by the programming 's viewing figures.

Hemp Fibers Make Better Supercapacitors Than Graphene

samzenpus posted about 2 months ago | from the burning-up-and-down dept.

Science 178

biodata (1981610) writes "BBC News is reporting findings published in the journal ACS Nano by Dr David Mitlin from Clarkson University. Dr. Mitlin's team took waste hemp stems and recycled the material into supercapacitors with performance as good, or better, than those built from graphene, at a fraction of the raw materials cost. "We're making graphene-like materials for a thousandth of the price - and we're doing it with waste. The hemp we use is perfectly legal to grow. It has no THC in it at all - so there's no overlap with any recreational activities," Mitlin says.

How to Maintain Lab Safety While Making Viruses Deadlier

timothy posted about 2 months ago | from the this-one-goes-to-11 dept.

Medicine 218

Lasrick (2629253) writes "A scientist at the University of Wisconsin-Madison published an article in June revealing that he had taken genes from the deadly human 1918 Spanish Flu and inserted them into the H5N1 avian flu to make a new virus—one which was both far deadlier and far more capable of spreading than the original avian strain. In July it was revealed that the same scientist was conducting another study in which he genetically altered the 2009 strain of flu to enable it to evade immune responses, 'effectively making the human population defenseless against re-emergence.' In the U.S. alone, biosafety incidents involving pathogens happen more than twice per week. These 'gain-of-function' experiments are accidents waiting to happen, with the possibility of starting deadly pandemics that could kill millions. It isn't as if it hasn't happened before: in 2009, a group of Chinese scientists created a viral strain of flu virus that escaped the lab and created a pandemic, killing thousands of people. 'Against this backdrop, the growing use of gain-of-function approaches for research requires more careful examination. And the potential consequences keep getting more catastrophic.' This article explores the history of lab-created pandemics and outlines recommendations for a safer approach to this type of research."

Transparent Fish Lead to Stem Cell Research Breakthrough

timothy posted about 2 months ago | from the we-see-what-you-did-there dept.

Australia 33

brindafella (702231) writes Australian scientists have accidentally made one of the most significant discoveries in stem cell research, by studying the transparent embryos of Zebrafish (Danio rerio). The fish can be photographed and their development studied over time, and the movies can be played backwards, to track back from key developmental stages to find the stem cell basis for various traits of the fish. This fundamental research started by studying muscles, but the blood stem cell breakthrough was a bonus. They've found out how hematopoietic stem cells (HSC), among the most important stem cells found in blood and bone marrow, is formed. The scientists are based at the Australian Regenerative Medicine Institute at Monash University. The research has been published in the Nature medical journal. This discovery could lead to the production of self-renewing stem cells in the lab to treat multiple blood disorders and diseases.

Giant Greek Tomb Discovered

samzenpus posted about 2 months ago | from the digging-up-the-past dept.

Science 164

schwit1 writes Archaeologists have uncovered the largest tomb ever discovered in Greece and think it is linked to the reign of Alexander the Great. "The tomb, dating to around 300 BC, may have held the body of one of Alexander's generals or a member of his family. It was found beneath a huge burial mound near the ancient site of Amphipolis in northern Greece. Antonis Samaras, Greece's prime minister, visited the dig on Tuesday and described the discovery as 'clearly extremely significant'. A broad, five-yard wide road led up to the tomb, the entrance of which was flanked by two carved sphinxes. It was encircled by a 500 yard long marble outer wall. Experts believe a 16ft tall lion sculpture previously discovered nearby once stood on top of the tomb."

Historians Rediscover Einstein's Forgotten Model of the Universe

samzenpus posted about 2 months ago | from the rough-draft dept.

Space 35

KentuckyFC writes In 1931, after a 3- month visit to the U.S., Einstein penned a little known paper that attempted to show how his theory of general relativity could account for some of the latest scientific evidence. In particular, Einstein had met Edwin Hubble during his trip and so was aware of the latter's data indicating that the universe must be expanding. The resulting model is of a universe that expands and then contracts with a singularity at each end. In other words, Einstein was studying a universe that starts with a big bang and ends in a big crunch. What's extraordinary about the paper is that Einstein misspells Hubble's name throughout and makes a number of numerical errors in his calculations. That's probably because he wrote the paper in only 4 days, say the historians who have translated it into English for the time. This model was ultimately superseded by the Einstein-de Sitter model published the following year which improves on this in various ways and has since become the workhorse of modern cosmology.

UCSD To Test Safety of Spinal Stem Cell Injection

samzenpus posted about 2 months ago | from the learning-to-walk-again dept.

Medicine 43

An anonymous reader writes Researchers at the University of California, San Diego School of Medicine have launched a clinical trial to investigate the safety of neural stem cell transplantation in patients with chronic spinal cord injuries. This Phase I clinical trial is recruiting eight patients for the 5-year study. Pre-clinical studies of these cells by Ciacci and Martin Marsala, MD, at the UC San Diego School of Medicine, showed that these grafted neural stem cells improved motor function in spinal cord injured rats with minimal side effects indicating that human clinical trials are now warranted.

Entire South Korean Space Programme Shuts Down As Sole Astronaut Quits

samzenpus posted about 2 months ago | from the take-this-job-and-launch-it dept.

Space 186

An anonymous reader writes The entire South Korean space program has been forced to shut down after its only astronaut resigned for personal reasons. Yi So-yeon, 36, became the first Korean in space in 2008 after the engineer was chosen by the Korea Aerospace Research Institute (KARI) to lead the country's $25m space project. Her resignation begs questions of KARI regarding whether she was the right person to lead the program and whether the huge cost of sending her into space was a waste of taxpayer's money.

The Benefits of Inequality

Soulskill posted about 2 months ago | from the depending-on-which-side-of-the-equation-you're-on dept.

Science 254

New submitter MutualFun sends this article from Science News: Which would you prefer: egalitarianism or totalitarianism? When it comes down to it, the choice you make may not be as obvious as you think. New research suggests that in the distant past, groups of hunter-gatherers may have recognized and accepted the benefits of living in hierarchical societies, even if they themselves weren't counted among the well-off. This model could help explain why bands of humans moved from largely egalitarian groups to hierarchical cultures in which social inequality was rife.

Why Hasn't This Asteroid Disintegrated?

Soulskill posted about 2 months ago | from the this-is-glue.-strong-stuff. dept.

Space 74

sciencehabit writes: Planetary scientists have found an asteroid spinning too fast for its own good. The object, known as 1950 DA, whips around every 2.1 hours, which means that rocks on its surface should fly off into space. What's keeping the remaining small rocks and dust on the surface? The researchers suggest van der Waals forces, weak forces caused by the attraction of polar molecules, which have slightly different charges on different sides of the molecule. For example, water molecules exhibit surface tension because of van der Waals forces, because the negative charge of one water molecule's oxygen atom is attracted to nearby water molecules' hydrogen atoms, which have a positive charge at their surfaces. Similar attractions could be occurring between molecules on the surfaces of different pieces of dust and rock. Such forces would be comparable to those that caused lunar dust to stick to astronauts' space suits.

NASA's Greenhouse Gas Observatory Captures 'First Light'

Unknown Lamer posted about 2 months ago | from the captain-planet-will-find-you dept.

NASA 143

mdsolar (1045926) writes with news that NASA's second attempt to launch a satellite to map carbon dioxide levels across the globe succeeded, and its instruments are operating properly. From the article: NASA's first spacecraft dedicated to studying Earth's atmospheric climate changing carbon dioxide levels and its carbon cycle has reached its final observing orbit and taken its first science measurements as the leader of the world's first constellation of Earth science satellites known as the International 'A-Train. The Orbiting Carbon Observatory-2 (OCO-2) is a research satellite tasked with collecting the first global measurements of atmospheric carbon dioxide (CO2) — the leading human-produced greenhouse gas and the principal human-produced driver of climate change. The 'first light' measurements were conducted on Aug. 6 as the observatory flew over central Papua New Guinea and confirmed the health of the science instrument.

Scientists Who Smuggle Radioactive Materials

Soulskill posted about 2 months ago | from the probably-more-ethical-than-most-ways-they-can-get-funding dept.

Government 66

Lasrick writes: Although the complicity of scientists in the smuggling of radioactive materials has been a long-standing concern, smuggling-prevention efforts have so far failed to recognize a key aspect to the problem: scientists are often sought out to test the quality and level of the material well before it is taken to the black market. Egle Murauskaite of the U.S. National Consortium for the Study of Terrorism and Responses to Terrorism (START) describes why concentrating on this aspect of the smuggling process, long considered less egregious than the actual selling of the material, could really make a difference in keeping radioactive materials off the black market in the first place.

Maryam Mirzakhani Is the First Woman Fields Medalist

Soulskill posted about 2 months ago | from the first-of-many dept.

Math 75

An anonymous reader sends news that the 2014 Fields Medals have been awarded for outstanding work in the field of mathematics. The winners are Artur Avila, Manjul Bhargava, Martin Hairer, and Maryam Mirzakhani. Quanta Magazine writes, Mirzakhani is the first woman to win a Fields Medal. The gender imbalance in mathematics is long-standing and pervasive, and the Fields Medal, in particular, is ill-suited to the career arcs of many female mathematicians. It is restricted to mathematicians younger than 40, focusing on the very years during which many women dial back their careers to raise children. Mirzakhani feels certain, however, that there will be many more female Fields medalists in the future. "There are really many great female mathematicians doing great things," she said. Quanta has profiles of the other winners as well (Avila, Bhargava, Hairer), and of Rolf Nevanlinna Prize winner Subhash Khot.

3 Congressmen Trying To Tie Up SpaceX

Soulskill posted about 2 months ago | from the can't-you-go-back-to-not-passing-legislation dept.

Space 393

An anonymous reader writes: Phil Plait reports that a trio of U.S. Congressmen are asking NASA to investigate what they call "an epidemic of anomalies" at SpaceX. They sent a memo (PDF) demanding that SpaceX be held accountable to taxpayers for mission delays stemming from the development of new rockets. Plait notes, "[A]s a contractor, the rules are different for them than they would be if NASA themselves built the rockets, just as the rules are for Boeing or any other contractor. In fact, as reported by Space News, NASA didn't actually pay for the development of the Falcon 9; Elon Musk did." He adds, "Another reason this is silly is that every rocket ever made has undergone problems; they are fiendishly complex machines and no design has ever gotten from the drafting board to the launch pad without issues. Sure, SpaceX has experienced launch delays and other problems, but the critical thing to remember is that those problems are noted, assessed, and fixed sometimes within hours or minutes." Plait accuses the congressmen of trying to bury private spaceflight under red tape in order to protect established industries in their own states.

Injecting Liquid Metal Into Blood Vessels Could Help Kill Tumors

Unknown Lamer posted about 2 months ago | from the accidentally-colossus dept.

Biotech 111

KentuckyFC (1144503) writes One of the most interesting emerging treatments for certain types of cancer aims to starve the tumor to death. The strategy involves destroying or blocking the blood vessels that supply a tumor with oxygen and nutrients. Without its lifeblood, the unwanted growth shrivels up and dies. This can be done by physically blocking the vessels with blood clots, gels, balloons, glue, nanoparticles and so on. However, these techniques have never been entirely successful because the blockages can be washed away by the blood flow and the materials do not always fill blood vessels entirely, allowing blood to flow round them. Now Chinese researchers say they've solved the problem by filling blood vessels with an indium-gallium alloy that is liquid at body temperature. They've tested the idea in the lab on mice and rabbits. Their experiments show that the alloy is relatively benign but really does fill the vessels, blocks the blood flow entirely and starves the surrounding tissue of oxygen and nutrients. The team has also identified some problems such as the possibility of blobs of metal being washed into the heart and lungs. Nevertheless, they say their approach is a promising injectable tumor treatment.

Chile Earthquake Triggered Icequakes In Antarctica

Unknown Lamer posted about 2 months ago | from the continent-vs-continent dept.

Earth 21

sciencehabit (1205606) writes In 2010, a powerful magnitude-8.8 earthquake struck off the coast of central Chile, rocking much of the country and producing tremor as far away as Argentina and Peru. But a new study suggests its effects were felt even farther away—in Antarctica. In the wake of the Maule temblor, the scientists found, several seismic stations on the frozen continent registered 'icequakes,' probably due to fracturing of the ice as the planet's crust shook.

Google's Satellites Could Soon See Your Face From Space

Unknown Lamer posted about 2 months ago | from the google-face-view dept.

Space 140

Jason Koebler (3528235) writes Two months ago, after much lobbying by the biggest satellite company in North America, DigitalGlobe, the US government relaxed restrictions to allow for commercially available satellite imagery up to 25 cm resolution—twice as detailed as the previous limit of 50 cm.
The DigitalGlobe's Worldview-3, the first commercial satellite set to capture these high-res images is set to launch this Wednesday. Six months after that, private businesses, including its regular client Google, will be able to get their hands on hyper-detailed photos and videos of the globe.

Geneticists Decry Book On Race and Evolution

samzenpus posted about 2 months ago | from the take-my-name-out-of-your-book dept.

Books 541

sciencehabit writes "A best-seller by former New York Times science writer Nicholas Wade about recent human evolution and its potential effects on human cultures has drawn critical reviews since its spring publication. Now, nearly 140 senior human population geneticists around the world, many of whose work was cited in the book, have signed a letter to The New York Times Book Review stating that Wade has misinterpreted their work. The letter criticizes "Wade's misappropriation of research from our field to support arguments about differences among human societies."

About Half of Kids' Learning Ability Is In Their DNA

samzenpus posted about 2 months ago | from the in-the-cards dept.

Math 227

Taco Cowboy writes with this story about new research that finds a strong genetic component to a child's ability in math and reading. "You may think you're better at reading than you are at math (or vice versa), but new research suggests you're probably equally good (or bad) at both. The reason: The genes that determine a person's ability to tackle one subject influence their aptitude at the other, accounting for about half of a person's overall ability. The study, published Tuesday in the journal Nature Communications, used nearly 1,500 pairs of 12-year-old twins to tease apart the effects of genetic inheritance and environmental variables on math and reading ability. The researchers administered a set of math and verbal tests to the children and then compared the performance of different sets of twins. They found that the twins' scores — no matter if they were high or low — were twice as similar among pairs of identical twins as among pairs of fraternal twins. The results indicated that approximately half of the children's math and reading ability stemmed from their genetic makeup.

A complementary analysis of unrelated kids corroborated this conclusion — strangers with equivalent academic abilities shared genetic similarities. What's more, the genes responsible for math and reading ability appear to be numerous and interconnected, not specifically targeted toward one set of skills. These so-called 'generalist genes' act in concert to determine a child's aptitude across multiple disciplines. The finding that one's propensities for math and reading go hand in hand may come as a surprise to many, but it shouldn't. People often feel that they possess skills in only one area simply because they perform slightly worse in the other."

Toxic Algae Threatens Florida's Gulf Coast

timothy posted about 2 months ago | from the bigger-than-rhode-island-and-providence-plantations dept.

Earth 99

As reported by Discovery News, After Toledo had to temporarily ban residents from using tap water last weekend because of a toxic algae bloom on Lake Erie, you probably figured that we’d filled the quota of bad algae-related news for the summer. No such luck, unfortunately. Off the Gulf Coast of Florida, the biggest red tide bloom seen in Florida in nearly a decade already has killed thousands of fish. The bloom, which contains the microorganism Karenia brevis, may pose a public health threat to Floridians if it washes ashore, which is expected to happen in the next two weeks, according to Reuters. NBC News says this is the largest such bloom seen since 2006 — approximately 50 x 80 miles.

Online Tool Flagged Ebola Outbreak Before Formal WHO Announcement

timothy posted about 2 months ago | from the conspiracy-for-good dept.

Medicine 35

Taco Cowboy (5327) writes Nine days before the announcement from WHO regarding the Ebola outbreak in West Africa, an online tool had the incident flagged. HealthMap, a team of 45 researchers, epidemiologists and software developers at Boston Children's Hospital founded in 2006, hosting an online tool that uses algorithms to scour tens of thousands of social media sites, local news, government websites, infectious-disease physicians' social networks and other sources to detect and track disease outbreaks. Sophisticated software filters irrelevant data, classifies the relevant information, identifies diseases and maps their locations with the help of experts. The tool was introduced in 2006 with a core audience of public health specialists, but that changed as the system evolved and the public became increasingly hungry for information during the swine flu pandemic. To get a feel of how HealthMap works, in the case of the Ebola outbreak, visit the site.

Do Dark Matter and Dark Energy Cast Doubt On the Big Bang?

timothy posted about 2 months ago | from the hey-man-it's-just-a-theory dept.

Space 225

StartsWithABang (3485481) writes "Back in the 1960s, after the discovery of the Cosmic Microwave Background, the Big Bang reigned supreme as the only game in town. But back then, we also assumed that what we consider as "normal matter" — i.e., protons, neutrons and electrons — was, along with photons and neutrinos, the only stuff that made up the Universe. But the last 50 years have shown us that dark matter and dark energy actually make up 95% of the energy composition of our cosmos. Given that, is there any wiggle room to possibly invalidate the Big Bang?"

NASA Releases Footage of "Flying Saucer" Braking Test, Declares Success

timothy posted about 2 months ago | from the you-can-have-mars-I'll-stay-here dept.

Mars 55

According to the AP, in a story carried by the San Jose Mercury News, NASA engineers insisted Friday that a test of a vehicle they hope to one day use on Mars achieved most of its objectives, despite a parachute that virtually disintegrated the moment it deployed. The engineers laid out at a news conference what they've learned in the six weeks since the $150 million high-altitude test of a vehicle that's designed to bring spacecraft -- and eventually astronauts -- safely to Mars. Engineers said they achieved the main objective: getting a flying saucer-shaped craft to 190,000 feet above the Earth at more than four times the speed of sound under test conditions that matched the Martian atmosphere. Ars Technica has (beautiful, high-speed, high-definition) video of the test that shows the parachute tearing itself apart, as well as the many parts that went as planned.

Enthusiast Opts For $2200 Laser Eye Surgery To Enhance Oculus Rift Experience

timothy posted about 2 months ago | from the funny-I-might-want-it-for-regular-goggles dept.

Input Devices 109

An anonymous reader writes After 30 years of wearing glasses, one man says that the Oculus Rift virtual reality headset has prompted him to get laser eye surgery. With farsightedness and astigmatism, he says, "Never thought much about the laser surgery until the Rift, that's for sure." He has an appointment to get the $2200 surgery on the 13th of this month. "For me it is clear, my eyeglasses are like an obstacle for optimal VR experience," he said. He hopes the surgery will remove his need for glasses, which can be uncomfortable inside of the Rift, if they fit at all, and cause several issues such as scratched lenses and lower field of view. Oculus plans to make the consumer version of the Oculus Rift (aka CV1) more friendly to glasses wearers, "...we have a lot of great ideas for supporting glasses in the consumer version [of the Rift] (especially since a huge portion of the Oculus team wears glasses everyday!)" they noted in their Kickstarter.

Experimental Drug Compound Found To Reverse Effects of Alzheimer's In Mice

timothy posted about 2 months ago | from the pernicious-disease-needs-spanking dept.

Medicine 105

Zothecula (1870348) writes "While there has been progress made in the fight against Alzheimer's, our understanding of the dispiriting disease remains somewhat limited, with a definitive cure yet to be found. The latest development comes at the hands of researchers from Yale's School of Medicine, who have discovered a new drug compound shown to reverse the effects of Alzheimer's in mice."

E-Visits To the Doctor To Top 75 Million In the US, Canada This Year

timothy posted about 2 months ago | from the billing-codes-had-to-catch-up dept.

Medicine 35

Lucas123 (935744) writes "Telehealth medicine, or communicating remotely with patients through electronic means, will be used by nearly one in six North Americans this year, according to Deloitte. With an aging Baby Boomer population and a growing shortage of primary care physicians, electronic visits (eVisits) reduce both time and cost in treating common ailments. The overall cost of in-person primary physician visits worldwide is $175 billion. Globally, the number of eVisits will climb to 100 million this year, potentially saving over $5 billion when compared to the cost of in-person doctor visits. Last November, The University of Pittsburgh Medical Center (UPMC) revamped its patient portal, renaming it MyUPMC, and rolling out AnywhereCare, offering patients throughout Pennsylvania eVisits with doctors 24 hours a day, seven days a week either over the phone or through video conferencing. The service offers a 30-minute or less wait time and saves the hospital system more than $86 per patient over a traditional visit."

Wyoming's Natural Trap Cave Yields Huge Trove of Animal Remains

timothy posted about 2 months ago | from the you'd-think-the-name-would-tip-them-off dept.

Earth 31

A cave in Wyoming that's easy to fall into, and hard to escape, has become a treasure trove for scientists. Scientists excavating an ancient Wyoming sinkhole containing a rare trove of fossils of Ice Age mammals have unearthed hundreds of bones of such prehistoric animals as American cheetahs, a paleontologist said on Friday. The two-week dig by an international team of researchers led by Des Moines University paleontologist Julie Meachen marked the first exploration of Natural Trap Cave at the base of the Bighorn Mountains in north-central Wyoming since its initial discovery in the 1970s. ... Meachen said the extensive excavation that began late last month uncovered roughly 200 large bones of animals like horses that roamed North America from 12,000 to 23,000 years ago and an uncounted number of microfossils of creatures such as birds, lizards and snakes. ... A number of animals that fell 85 feet to their deaths after stumbling into the 15-foot-wide mouth of the cavern were unusually well preserved by cold and damp conditions, Meachen said.

New Process Promises Ammonia From Air, Water, and Sunlight

timothy posted about 2 months ago | from the kid-tested-mother-shocked dept.

Science 117

The synthesis of ammonia is one of the globe's most significant industrial applications of chemistry. PhysOrg reports the publication in the August issue of Science (sadly, article is paywalled) the description of a low-energy process to syntheize ammonia for fertilizer using just air, water, and sunlight, by zapping with electricity water bubbling through a matrix of iron oxide, and sodium and potassium hyroxide. Electricity isn't free, though — "Low energy" in this case means two-thirds the energy cost of the long-in-use Haber-Bosch process. Researcher Stuart Licht is getting some of the energy to run this reaction from a high-efficiency solar cell he's created, which creates hydrogen as a byproduct. Along with the elimination of the need to produce hydrogen from natural gas, the overall emissions are reduced quite significantly. The whole process also takes place at milder conditions, not requiring 450C and 200 times atmospheric pressure as the Haber-Bosch process does. ... But even with Licht's method, [University of Bristol electrochemistry professor David] Fermin points out that we are far away from being able to replicate nature's efficiency at converting nitrogen from the air to useful chemicals, which is done by nitrogen-fixing bacteria. "What is truly remarkable is that nature does it incredibly efficiently at low-temperature," Fermin added. And yet, if something more efficient can replace the Haber-Bosch process, it would lower the energy input of the production of one of the worlds most important chemicals and lead to a notable reduction in global CO2 emissions.

The Meteors You've Waited All Year For

timothy posted about 2 months ago | from the now-with-more-supermoon dept.

Space 31

StartsWithABang (3485481) writes It's finally here! Sure, we witnessed the birth of a new meteor shower earlier this year, but it was a flop. Many other showers have come-and-gone like they do every year, but none of them have given us a significant number of meteors-per-hour. But even with a near-full Moon out, it's finally time for the Perseids, the most reliable meteor shower year-after-year. Here's where to find them, where they come from and a whole lot more, including some surprising facts about where they don't come from: cometary tails!

Can We Call Pluto and Charon a 'Binary Planet' Yet?

timothy posted about 2 months ago | from the complex-gyrations dept.

Space 115

astroengine writes The debate as to whether Pluto is a planet or a dwarf planet rumbles on, but in a new animation of the small world, one can't help but imagine another definition for Pluto. As NASA's New Horizons spacecraft continues its epic journey into the outer solar system, its Kuiper Belt target is becoming brighter and more defined. Seen through the mission's Long Range Reconnaissance Imager (LORRI) camera, this new set of observations clearly shows Pluto and its biggest moon Charon locked in a tight orbital dance separated by only 11,200 miles. (Compared with the Earth-moon orbital separation of around 240,000 miles, you can see how compact the Pluto-Charon system really is.) Both bodies are shown to be orbiting a common point — the "barycenter" is located well above Pluto's surface prompting a new debate on whether or not Pluto and Charon should be redefined as a "binary planet".

Study Finds That Astronauts Are Severely Sleep Deprived

timothy posted about 2 months ago | from the loud-snoring-small-space dept.

Space 106

sciencehabit (1205606) writes "Researchers tracked the sleep patterns of 85 crew members aboard the International Space Station and space shuttle and found that despite an official flight schedule mandating 8.5 hours of sleep per night, they rarely got more than five. In fact, getting a full night's rest was so difficult that three-quarters of shuttle mission crew members used sleep medication, and sometimes entire teams were sedated on the same night. Given that sleep deprivation contributes to up to 80% of aviation accidents, it's important to better understand why sleep is so difficult in space, the authors say."

Paint Dust Covers the Upper Layer of the World's Oceans

Unknown Lamer posted about 2 months ago | from the zooplankton-love-fiberglass dept.

Earth 141

sciencehabit (1205606) writes Even when the sea looks clean, its surface can be flecked with tiny fragments of paint and fiberglass. That's the finding from a study that looked for plastic pollution in the uppermost millimeter of ocean. The microscopic fragments come from the decks and hulls of boats, and they could pose a threat to zooplankton, an important part of the marine food web.

WHO Declares Ebola Outbreak An International Emergency

Unknown Lamer posted about 2 months ago | from the we're-all-gonna-die dept.

Medicine 183

mdsolar (1045926) writes with news that, with the Ebola outbreak growing out of control, the WHO has declared an international health emergency. From the article: With cases rapidly mounting in four West African countries, the World Health Organization (WHO) today declared the Ebola outbreak a Public Health Emergency of International Concern (PHEIC), a designation that allows the agency to issue recommendations for travel restrictions but also sends a strong message that more resources need to be mobilized to bring the viral disease under control. ... This is only the third time the health agency has issued a PHEIC declaration since the new International Health Regulations (IHR), a global agreement on the control of diseases, were adopted in 2005. The previous two instances were in 2009, for the H1N1 influenza pandemic, and in May for the resurgence of polio.

'Unparticles' May Hold the Key To Superconductivity

Unknown Lamer posted about 2 months ago | from the too-cool-for-existence dept.

Science 48

KentuckyFC (1144503) writes One curious property of massless particles like photons is that their energy or momentum can take any value across many orders of magnitude, a property that physicists call scale invariance. By contrast, massive particles like electrons always have the same mass regardless of their energy or momentum. So massive particles are not scale invariant. The concept of unparticles is the idea that some "stuff" may have mass, energy and momentum and yet also be scale invariant. This stuff must be profoundly different from ordinary particles, hence the name: unparticles. Nobody has ever seen an unparticle but now physicists are suggesting that unparticles may hold the key to understanding unconventional superconductivity. Their thinking is that at very low temperatures, ordinary particles can sometimes behave like unparticles. In other words, their properties become independent of the scale at which they're observed. So if an unparticle moves without resistance on a tiny scale, then it must also move without resistance at every scale, hence the phenomenon of superconductivity. That could provide some important insights into unconventional superconductivity which has puzzled physicists since it was discovered in the 1980s.

The Doctor Will Skype You Now

samzenpus posted about 2 months ago | from the take-four-red-capsules-in-10-minutes-take-two-more dept.

Medicine 97

amkkhan writes Next time you need to go to the doctor, instead of making an appointment, why not just fire up your smartphone? New programs by companies such as Doctor on Demand and the University of Pittsburgh's AnywhereCare offer one-on-one conferencing with doctors, either over the phone or through video on your phone or computer – giving you all the medical advice you need without having to set foot in a doctor's office. This new breed of checkup, known as telemedicine, has the opportunity to revolutionize personal health, says Pat Basu, chief medical officer of Doctor on Demand and a former Stanford University physician. "Two of the most important skills we use as physicians are looking and listening," he says. "Video conferencing lets me use those skills and diagnose things like colds, coughs and even sprains in a manner more convenient for you."

Why the "NASA Tested Space Drive" Is Bad Science

samzenpus posted about 2 months ago | from the not-so-fast dept.

NASA 315

StartsWithABang writes Just over a century ago, N rays were detected by over a hundred researchers and discussed in some three hundred publications, yet there were serious experimental flaws and experimenter biases that were exposed over time. Fast forward to last week, and NASA Tests Microwave Space Drive is front page news. But a quick analysis shows that it isn't theorists who'll need to struggle to explain this phenomenon, but rather the shoddy experimentalists who are making the exact same "bad science" mistakes all over again.

Why Bhutan Might Get Drone Delivery Copters Before Seattle Does

timothy posted about 2 months ago | from the go-where-they'll-let-you-in dept.

Medicine 102

From Quartz comes the story of a Silicon Valley start-up trying to kickstart a delivery system using package-laden drones to overfly gridlocked traffic — in Bhutan. Bhutanese roads are slow, the weather can be brutal, and there are very few physicians to go around. That’s why, earlier this year, the Bhutanese government and the World Health Organization reached out to Matternet, a Palo Alto company backed by some big name American investors that develops transportation networks using unmanned aerial vehicles to reach hard-to-access places. ... The project in Bhutan, however, is the first big test for the startup. Matternet is aiming to build a network of low-cost quadcopters to connect the country’s main hospitals with rural communities. Matternet uses small quadcopters that can carry loads of about four pounds across 20 km at a time, to and from pre-designated landing stations. The company is able to track these flights in real-time, and aims to eventually deploy fully-automated landing stations that replace drone batteries, giving them extended range and flight time. The drones it uses typically cost between $2,000-5,000.

Algorithm Predicts US Supreme Court Decisions 70% of Time

samzenpus posted about 2 months ago | from the telling-the-future dept.

The Courts 177

stephendavion writes A legal scholar says he and colleagues have developed an algorithm that can predict, with 70 percent accuracy, whether the US Supreme Court will uphold or reverse the lower-court decision before it. "Using only data available prior to the date of decision, our model correctly identifies 69.7 percent of the Court's overall affirm and reverse decisions and correctly forecasts 70.9% of the votes of individual justices across 7,700 cases and more than 68,000 justice votes," Josh Blackman, a South Texas College of Law scholar, wrote on his blog Tuesday.

Ancient Worms May Have Saved Life On Earth

samzenpus posted about 2 months ago | from the thank-a-worm-today dept.

Earth 54

sciencehabit writes You can credit your existence to tiny wormlike creatures that lived 500 million years ago, a new study suggests. By tunneling through the sea floor, scientists say, these creatures kept oxygen concentrations at just the right level to allow animals and other complex life to evolve. The finding may help answer an enduring mystery of Earth's past. The idea is that as they dug and wiggled, these early multicellular creatures—some were likely worms as long as 40 cm—exposed new layers of seafloor sediment to the ocean's water. Each new batch of sediment that settles onto the sea floor contains bacteria; as those bacteria were exposed to the oxygen in the water, they began storing a chemical called phosphate in their cells. So as the creatures churned up more sediment layers, more phosphate built up in ocean sediments and less was found in seawater. Because algae and other photosynthetic ocean life require phosphate to grow, removing phosphate from seawater reduced their growth. Less photosynthesis, in turn, meant less oxygen released into the ocean. In this way, the system formed a negative feedback loop that automatically slowed the rise in oxygen levels as the levels increased.

US Intelligence Wants Tools To Tell: Who's the Smartest of Them All?

samzenpus posted about 2 months ago | from the finding-big-brains dept.

Government 162

coondoggie writes Can a tool or technology be applied to the brain and accurately predict out of a given group of people who will be the smartest? The research arm of the Office of the Director of National Intelligence, Intelligence Advanced Research Projects Activity (IARPA) is looking for exactly those kinds of tools."IARPA is looking to get a handle on the state of the art in brain-based predictors of future cognitive performance. In particular, IARPA is interested in non-invasive analyses of brain structure and/or function that can be used to predict who will best learn complex skills and accomplish tasks within real-world environments, and with outcome measures, that are relevant to national security.

Man-Made "Dead Zone" In Gulf of Mexico the Size of Connecticut

samzenpus posted about 2 months ago | from the we're-doomed dept.

Earth 184

Taco Cowboy writes Somewhere in the Gulf of Mexico there is a man-made "Dead Zone" the size of the State of Connecticut. Inside that "Dead Zone" the water contains no oxygen, or too little to support normal marine life, especially the bottom dwelling fish and shrimps. The "Dead Zone" measures about 5,000 square miles (13,000 square kilometers) [and] is caused by excess nutrient runoff from farms along the Mississippi River, which empties into the Gulf. The excess nutrients feed algae growth, which consumes oxygen when it works its way to the Gulf bottom. The Gulf dead zone, which fluctuates in size but measured 5,052 square miles this summer, is exceeded only by a similar zone in the Baltic Sea around Finland. The number of dead zones worldwide currently totals more than 550 and has been increasing for decades.

Rosetta Achieves Orbit Around Comet

timothy posted about 2 months ago | from the what-hath-man-wrought dept.

Space 54

schwit1 (797399) writes with an update on the European Space Agency's comet-exploring craft Rosetta: "Rosetta has successfully achieved orbit around Comet 67P/C-G and has transmitted its first close up images. More information here (1) and here (2) about the rendezvous and what science the mission scientists plan to do as they orbit the comet." As pointed out earlier by reader Taco Cowboy, this is the fruit of a 10-year mission. Reuters points out The mission performs several historical firsts, including the first time a spacecraft orbits a comet rather than just whizzing past to snap some fly-by pictures, and the first time a probe has landed on a comet. ... There is little flexibility in Rosetta's schedule this year. The comet is still hurtling toward the inner Solar System at almost 55,000 km per hour, and the closer it gets to the sun the more active it will become, emitting gases that can make it difficult to predict the trajectory of Rosetta and its probe.

Researchers Make Fruit Flies Perform Aerobatics Like Spitfire Pilots

Unknown Lamer posted about 2 months ago | from the aces-high dept.

Science 51

KentuckyFC (1144503) writes Researchers from Cornell University glued a tiny magnetic bar to the back of fruit flies and allowed them to fly through an electromagnet. Pulsing the magnet then causes the flies to roll in mid-air, like victorious Spitfire pilots. The work isn't entirely frivolous. The team was studying how fruit flies achieve stable flight when they ought to be particularly susceptible to being rolled by tiny gusts of air.

It turns out that fruit flies have incredibly fast reactions. They respond to being rolled within a single wing beat, that's 5 milliseconds, flapping their wings asymmetrically to regain stable flight. That kind of reaction time makes them one of the fastest creatures in the animal world. By comparison, the visual startle response in flies takes 20 milliseconds and the quickest reactions humans can manage is about 100 milliseconds.

European Rosetta Space Craft About To Rendezvous With Comet

timothy posted about 2 months ago | from the rosetta-about-to-meet-stone dept.

Space 62

Taco Cowboy (5327) writes After a long 10-year journey spanning some four (4) billion kilometers, Rosetta, an interplanetary space craft from the ESA (European Space Agency), is on its final approach to comet Comet 67P (or comet Churyumov-Gerasimenko). The last in a series of 10 thruster firings over the past few months has slowed Rosetta to the pace of a person walking, about two miles per hour relative to the speed of its target at a distance of about 60 miles. Photographs have already revealed a surprisingly irregular shape for the 2.5-mile-wide comet, possibly an amalgamation of two icy bodies or a result of uneven weathering during previous flybys. From a distance, the blurry blob initially looked somewhat like a rubber duck. As the details came into the focus, it now more resembles a knob of ginger flying through space. Wednesday marks a big moment for space exploration: After a few thruster rockets fire for a little over six minutes, Rosetta will be in position to make the first-ever rendezvous with that comet nickname 'Rubber Duck.' 'This burn, expected to start at 11 a.m. central European time, will tip Rosetta into the first leg of a series of triangular paths around the comet, according to the Paris-based European Space Agency, or ESA, which oversees the mission. Each leg will be about 100 kilometers (62 miles) long, and it will take Rosetta between three to four days to complete each leg. There will be a live streaming webcast of Rosetta's Aug. 6 orbital arrival starting at 8 a.m. GMT via a transmission from ESA's spacecraft operations centre in Darmstadt, Germany. Also at the BBC.

Senior RIKEN Scientist Involved In Stem Cell Scandal Commits Suicide

timothy posted about 2 months ago | from the one-way-to-handle-things dept.

Biotech 127

sciencehabit (1205606) writes "Yoshiki Sasai, a noted stem cell scientist at the RIKEN Center for Developmental Biology (CDB) in Kobe, Japan, who co-authored two controversial and later retracted papers that reported a simple way of reprogramming mature cells, was confirmed dead this morning, an apparent suicide. Local media reported he was found hanging from a stairway railing in the RIKEN complex in Kobe. Sasai was rushed to a nearby hospital but efforts to revive him were unsuccessful. He reportedly left a suicide note, but it has not been made public."

The Man Who Invented the 26th Dimension

Unknown Lamer posted about 2 months ago | from the beards-give-you-science-powers dept.

Math 259

StartsWithABang (3485481) writes Based on all the experiments we've ever been able to perform, we're quite certain that our Universe, from the largest scales down to the microscopic, obeys the physical laws of three spatial dimensions (and one time dimension): a four-dimensional spacetime. But that's not the only possibility mathematically. People had experimented with bringing a fifth dimension in to unify General Relativity with Electromagnetism in the past, but that was regarded as a dead-end. Then in the 1970s, an unknown theoretical physicist working on the string model of the strong interactions discovered that by going into the 26th dimension, some incredibly interesting physics emerged, and String Theory was born.

SpaceX Chooses Texas Site For Private Spaceport

Unknown Lamer posted about 2 months ago | from the to-the-moon dept.

Space 113

AcidPenguin9873 (911493) writes Today, Texas Gov. Rick Perry and SpaceX CEO Elon Musk announced that SpaceX has chosen a site at Boca Chica Beach, Texas, as the location where SpaceX will build its rocket launch facility. The Boca Chica site, at the southern tip of Texas near Brownsville and South Padre Island, had been competing with sites in Florida, Georgia, and Puerto Rico, but had been named the frontrunner to land the site by Musk when he testified to the Texas state legislature in 2013. The spaceport will be the first privately-owned vertical rocket launch facility in the world, and will target commercial customers. State and local governments have pledged to provide a total of about $20 million in incentives to attract SpaceX to the site.

"Secret Serum" Used To Treat Americans With Ebola

Unknown Lamer posted about 2 months ago | from the illuminati-controlled-anti-virals-of-course dept.

Medicine 390

mrspoonsi (2955715) writes with news that the two Americans infected with Ebola in Liberia and transported to Atlanta for treatment were given an experimental drug, and their conditions appear to be improving. From the article: While some people do fight off the disease on their own, in the case of the two Americans, an experimental serum may have saved their lives. As Dr. Kent Brantly and missionary Nancy Writebol waited in a Liberian hospital, someone from the National Institutes of Health reached out to Samaritan's Purse, one of the two North Carolina-based Christian relief groups the two were working with, and offered to have vials of an experimental drug called ZMapp sent to Liberia, according to CNN's unnamed source. Although the Food and Drug Administration does allow experimental drugs to occasionally be distributed in life-threatening circumstances without approval under the expanded access or "compassionate use" conditions. It's not yet clear whether that approval was granted in this case or not. ... Brantly, who had been sick for nine days already ... [received] the first dose ... within an hour, he was able to breathe better and a rash on his body started to fade. The next day he was able to shower without help before boarding the air ambulance that flew him to Atlanta.

Interviews: Ask James Cameron About The Deepsea Challenge 3D Movie

samzenpus posted about 2 months ago | from the go-ahead-and-ask dept.

Movies 45

Starting at 5:15 am local time on March 26, 2012, James Cameron piloted the Deepsea Challenger to the east depression of the Challenger Deep, the deepest part of the Mariana Trench. He spent three hours exploring the sea floor. Later analysis of the specimens Cameron collected during this and other dives in the submersible revealed many life forms, with at least 100 of them identified as new species. One shrimp-like amphipod was found to produce a compound that was already in clinical trials to treat Alzheimer’s disease. The Deepsea Challenger submersible and science platform was donated to Woods Hole Oceanographic Institution on March 26, 2013, the one-year anniversary of the historic dive. A new National Geographic film chronicling the project from the beginning called, Deepsea Challenge 3D, is coming out August 8th in select theaters. Here's your chance to ask James Cameron and director John Bruno about the film, the dive, and the submersible. As usual, ask as many questions as you'd like, but please, one per post.

Slashdot Login

Need an Account?

Forgot your password?