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Different signal paths for spontaneous and deliberate activation of memories
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Entirely different signal paths and parts of the brain are involved when you try to remember something and when you just happen to remember something, prompted by a smell, a picture, or a word, for instance. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 13, 2010 Category: Science Source Type: news
Calculations made by physicist Gustav Mie in 1908 put to test on single nanoparticlesEmail this article to a colleague.
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Rice students put calculations by German physicist Gustav Mie, made in 1908, to the test when they decided to look at the optical properties of single nanoparticles. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 13, 2010 Category: Science Source Type: news
Best treatment for childhood epilepsy suggested by new researchEmail this article to a colleague.
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One of the oldest available anti-seizure medications, ethosuximide, is the most effective treatment for childhood absence epilepsy, according to initial outcomes. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 13, 2010 Category: Science Source Type: news
Plants discover the benefits of good neighbors in strategy against herbivoresEmail this article to a colleague.
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Scandinavian scientists have discovered that a species of tree defends itself from herbivore attack by using chemicals emitted by neighboring plants. The study reveals how species of Birch tree absorb chemical compounds from neighboring Marsh tea plants, Rhondodendron tomentosum, in a unique "defense by neighbor strategy." (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 13, 2010 Category: Science Source Type: news
Exploiting the architecture of cancers may lead to their destructionEmail this article to a colleague.
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To grow larger, solid tumors require a network of blood vessels to nourish them. Chemotherapy exploits these vessels to deliver toxic drugs, but is inefficient if the drugs cannot pass quickly enough from the bloodstream into the tumor. A new study describes a way of transiently making the tumor blood vessels leakier, allowing more efficient drug uptake. This work may ultimately enhance delivery of chemotherapies into tumor tissue. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 13, 2010 Category: Science Source Type: news
Small dogs originated in the Middle East, genetic study findsEmail this article to a colleague.
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A genetic study has found that small domestic dogs probably originated in the Middle East more than 12,000 years ago. Researchers have traced the evolutionary history of the IGF1 gene, finding that the version of the gene that is a major determinant of small size probably originated as a result of the domestication of the Middle Eastern gray wolf. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 13, 2010 Category: Science Source Type: news
Brain tumor's 'grow-or-go' switch discoveredEmail this article to a colleague.
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This study discovered that a molecule called miR-451 coordinates this grow-or-go behavior, which is closely linked to the cells' ability to invade and spread. Thus, the molecule might be a biomarker for predicting survival in patients with glioblastoma multiforme and may serve as a target to develop drugs to fight these tumors. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 13, 2010 Category: Science Source Type: news
Prehistoric response to global warming informs human planning todayEmail this article to a colleague.
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Since 2004, University at Buffalo anthropologist Ezra Zubrow has worked intensively with teams of scientists in the Arctic regions of St. James Bay, Quebec, northern Finland and Kamchatka to understand how humans living 4,000 to 6,000 years ago reacted to climate changes. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 13, 2010 Category: Science Source Type: news
Effects of lifestyle and exposures are mirrored in blood gene expressionEmail this article to a colleague.
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A study by Norwegian and French researchers hopes to provide new understanding of how blood cells adjust gene expression in response to various clinical, biochemical and pathological conditions. The Norwegian Woman and Cancer postgenome study highlights numerous blood gene sets affected by one's physical condition, lifestyle factors and exposure variables. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 13, 2010 Category: Science Source Type: news
Mars dunes: On the move?Email this article to a colleague.
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New studies of ripples and dunes shaped by the winds on Mars testify to variability on that planet, identifying at least one place where ripples are actively migrating and another where the ripples have been stationary for 100,000 years or more. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 13, 2010 Category: Science Source Type: news
New insight into brain's decision-making processEmail this article to a colleague.
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The hippocampus, a part of the brain essential for memory, has long been known to "replay" recently experienced events. Previously, replay was believed to be a simple process of reviewing recent experiences in order to help consolidate them into long-term memory. However, new research shows the phenomenon of memory replay is much more complex, cognitive process that may help an animal maintain its internal representation of the world, or its cognitive map. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 13, 2010 Category: Science Source Type: news
Human cells exhibit foraging behavior like amoebae and bacteriaEmail this article to a colleague.
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When cells move about in the body, they follow a complex pattern similar to that which amoebae and bacteria use when searching for food, researchers have found. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 13, 2010 Category: Science Source Type: news
Climate change adverts draw mild rebuke from advertising watchdogEmail this article to a colleague.
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Leaked adjudication largely clears government over campaign that some thought 'scary, inaccurate and too political'Read the full text of the ASA adjudicationThe advertising watchdog has mildly rebuked the government over the phrasing of a claim in two advertisements on the danger of climate change, while dismissing the rest of the complaints against the controversial television and newspaper campaign.The campaign, run by the Department of Environment and Climate Change last winter, brought in 939 complaints. Various groups said the adverts were political, too scary, and factually misleading.The vast majority of these compl...
Source: Guardian Unlimited Science - March 13, 2010 Category: Science Authors: Robin McKie Tags: Climate change Climate change scepticism Environment Advertising Television industry Newspapers Media Law Politics UK news guardian.co.uk Science Source Type: news
Read the ASA adjudication on climate change advertsEmail this article to a colleague.
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Ruling leaked to the Guardian mildly rebukes government over print and TV campaignClimate changeClimate changeAdvertisingTelevision industryNewspapersLawguardian.co.uk © Guardian News & Media Limited 2010 | Use of this content is subject to our Terms & Conditions | More Feeds (Source: Guardian Unlimited Science)
Source: Guardian Unlimited Science - March 13, 2010 Category: Science Tags: Climate change Advertising Television industry Newspapers Media Environment Law UK news guardian.co.uk Resources Science Source Type: news
Advances in disease surveillance: Putting the "public" into public healthEmail this article to a colleague.
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MIAMI--Before a government reports a disease outbreak, cases must usually be counted, verified and assessed--a process that can take days, weeks or months. [More] (Source: Scientific American - Official RSS Feed)
Source: Scientific American - Official RSS Feed - March 13, 2010 Category: Science Tags: Biology,Health & Medicine,Health Medicine,Technology,Society Policy,Everyday Science,Basic Science,Energy Sustainability,Science Education,Evolutionary Biology,Ecology,Ethics,Infectious Diseases,Medical Technology,Pharmaceuticals,Communications, Source Type: journals
Communication often fumbled during patient hand-offs in hospitalEmail this article to a colleague.
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As shifts change in a hospital, outgoing physicians must "hand off" important information to their replacements in a brief meeting. But a new study of this hand-off process finds that the most important information is not fully conveyed in a majority of cases, even as physicians rate their communication as successful. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 13, 2010 Category: Science Source Type: news
PEGylated dendrimers: A novel mechanism of drug deliveryEmail this article to a colleague.
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A research team has shown how PEGylated polylysine dendrimers, a new type of nano-sized drug delivery system, can be altered to target either the lymphatic system or the bloodstream, which may improve the treatment of particular types of diseases. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 13, 2010 Category: Science Source Type: news
Knee replacement in elderly patients shown to improve balanceEmail this article to a colleague.
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Total knee replacement (TKR) successfully relieves pain and improves function in patients with advanced knee arthritis, according to a new study. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 13, 2010 Category: Science Source Type: news
Genetic mapping of algae biofuel species groundwork doneEmail this article to a colleague.
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Using green algae to produce hydrocarbon oil for biofuel production is nothing new; nature has been doing so for hundreds of millions of years, according a scientists. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 13, 2010 Category: Science Source Type: news
Genome analysis of marine microbe reveals a metabolic minimalistEmail this article to a colleague.
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Flightless birds, blind cave shrimp, and other oddities suggest a "use it or lose it" tendency in evolution. In the microbial world, an unusual marine microorganism appears to have ditched several major metabolic pathways, leaving it with a remarkably reduced set of genes. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 13, 2010 Category: Science Source Type: news
I don't want kids – I just want to have funEmail this article to a colleague.
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Carole Jahme shines the cold light of evolutionary psychology on readers' problems. This week: promiscuity and nostalgiaCasanova complexFrom a male, aged 42Dear Carole, I wonder what, evolutionarily speaking, is going on with men such as myself who have a long history of promiscuity but are reluctant to reproduce. I am 42 and I still don't want children. The idea of marriage or a long-term partner with children repulses me still, though sex is still very much on my agenda. I usually seek women who have already had children so that I don't feel pressure to reproduce. I accept the central premise of all your posts, but what'...
Source: Guardian Unlimited Science - March 13, 2010 Category: Science Authors: Carole Jahme Tags: Psychology Evolution Reproduction Zoology Biology Relationships Life and style Science guardian.co.uk Comment Source Type: news
Big Bang project may delay space shuttle's final flightEmail this article to a colleague.
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Scientists are still testing a possible design flaw in the Alpha Magnetic Spectrometer, which could lead to clues about the beginning of the universe.
Possible problems with a $2-billion physics experiment could delay the space shuttle's final flight and further complicate White House plans to retire the orbiter fleet this year. (Source: Los Angeles Times - Science)
Source: Los Angeles Times - Science - March 13, 2010 Category: Science Source Type: news
Farm chickens' DNA traced back to red jungle fowlEmail this article to a colleague.
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Genetic mutations that have occurred over thousands of years have made today's domesticated birds meatier and able to breed year-round.
Hundreds of genetic mutations accumulated over thousands of years have transformed the red jungle fowl of South Asia into the domesticated chickens that are a fixture on farms -- and dining tables -- worldwide, according to a scientific analysis of poultry DNA published this week in the journal Nature. (Source: Los Angeles Times - Science)
Source: Los Angeles Times - Science - March 13, 2010 Category: Science Source Type: news
Wolves kill teacher in AlaskaEmail this article to a colleague.
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Villagers in Chignik Lake on the Alaska Peninsula take precautions after the first known fatal wolf attack in U.S. in modern times.
Hunters were combing the snowy brush around Chignik Lake, Alaska, on Friday in an attempt to hunt down up to four wolves that killed a 32-year-old special education teacher in the first known fatal wolf attack in the U.S. in modern times. (Source: Los Angeles Times - Science)
Source: Los Angeles Times - Science - March 13, 2010 Category: Science Source Type: news
'Vaccines court' rejects mercury-autism link in 3 test casesEmail this article to a colleague.
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The finding supports a broad scientific consensus that the mercury-containing preservative thimerosal does not cause autism, and will likely disappoint parents who are convinced otherwise.
The federal "vaccines court" ruled Friday in three separate cases that the mercury-containing preservative thimerosal does not cause autism, a finding that supports the broad scientific consensus on the matter but that greatly disappointed parents who are convinced that their child's illness was caused by vaccines. (Source: Los Angeles Times - Science)
Source: Los Angeles Times - Science - March 13, 2010 Category: Science Source Type: news
High-intensity interval training is time-efficient and effective, study suggestsEmail this article to a colleague.
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The usual excuse of "lack of time" for not doing enough exercise is blown away by new research. The study adds to the growing evidence for the benefits of short term high-intensity interval training (HIT) as a time-efficient but safe alternative to traditional types of moderate long term exercise. Astonishingly, it is possible to get more by doing less! (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 13, 2010 Category: Science Source Type: news
Third seed shipment sent to Norway seed vault by USDAEmail this article to a colleague.
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A shipment of seed sent by the Agricultural Research Service earlier this month to the Svalbard Global Seed Vault in Norway included a wild Russian strawberry that an expeditionary team braved bears and volcanoes to collect. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 13, 2010 Category: Science Source Type: news
New research aims to prevent 'sudden cardiac arrest'Email this article to a colleague.
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Scientists are investigating the cause and effects of Sudden Cardiac Arrest syndrome. This team is hot on the trail of understanding how a multi-gene syndrome, one of the causes for SCA, operates inside the body. Once they figure out how the disorder operates and describe its molecular system in detail, they hope to develop a drug or therapy to stop this condition before it strikes. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 13, 2010 Category: Science Source Type: news
Conservationists urge treaty panel to reject ivory sale by Tanzania, ZambiaEmail this article to a colleague.
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An international team of conservationists says relaxing a current moratorium on ivory sales to allow one-time sales by Zambia and Tanzania could lead to increased slaughter of elephants for their ivory throughout Africa. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 13, 2010 Category: Science Source Type: news
Tumors may respond to extreme and moderate heatEmail this article to a colleague.
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Aided by ultrasound guidance, treating tumors with extreme heat or moderate heat may provide a possible therapeutic option, according to early research. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 13, 2010 Category: Science Source Type: news
Fossil bird eggshell provides source of ancient DNAEmail this article to a colleague.
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Scientists have successfully isolated ancient DNA from fossil eggshell remains of extinct birds for the first time. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 13, 2010 Category: Science Source Type: news
Killer combo: Salt, fat and sugarEmail this article to a colleague.
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Our favourite foods are making us fat, yet we can't resist, because eating them is changing our minds as well as bodiesFor years I wondered why I was fat. I lost weight, gained it back, and lost it again – over and over and over. I owned suits in every size. As a former commissioner of the FDA (the US Food and Drug Administration), surely I should have the answer to my problems. Yet food held remarkable sway over my behaviour.The latest science seemed to suggest being overweight was my destiny. I was fat because my body's "thermostat" was set high. If I lost weight, my body would try to get it back, slowin...
Source: Guardian Unlimited Science - March 13, 2010 Category: Science Tags: Obesity Health & wellbeing Food drink Science Neuroscience Books The Guardian Extracts Features Life and style Source Type: news
This column will change your life: A frightening prospect | Oliver BurkemanEmail this article to a colleague.
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Why is it that we enjoy being scared half to death by films and books?One wild and windswept recent afternoon – I know it should have been late at night, but it wasn't – I finally got around to watching Paranormal Activity, the ultra-low-budget horror film that became an underground success thanks to the curious pleasure so many people take in being scared half to death. (Don't watch it twice, or you may get scared fully to death.) Even at 3.30pm, when watched alone at home, it's an extremely creepy movie, documenting the haunting of a couple whose apartment becomes the target of a vengeful force intent on dr...
Source: Guardian Unlimited Science - March 13, 2010 Category: Science Authors: Oliver Burkeman Tags: Psychology Film Horror Philosophy Life and style Health & wellbeing The Guardian Features Source Type: news
What I'm really thinking: The lifeguardEmail this article to a colleague.
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'People regress to childhood in a pool – they come up and tell me that a person in their lane is splashing'When you're walking round a pool for eight hours a day, you think about everything. You worry that the floor is giving you athlete's foot, or you calculate the number of tiles poolside, to pass the time. While doing this thinking, you have to keep counting heads, to make sure everyone's still above water – sometimes I remember how many people are in each lane as a telephone number.People regress to childhood in a pool – they come up and tell me that a person in their lane is splashing or going too fast, lik...
Source: Guardian Unlimited Science - March 13, 2010 Category: Science Authors: Charlotte Northedge Tags: Life and style Swimming Sport Psychology The Guardian Interviews Features Source Type: news
'I gave my sister a kidney. I don't know if I'll ever do a better thing'Email this article to a colleague.
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This week saw the first three-way kidney transplant, in which living donors gave to a stranger in return for an organ for a loved one. Peter Martin, who donated a kidney to his sister, describes how it feelsFour years ago I gave my sister Paula a kidney. It was just before Christmas and I'm sure we exchanged books, or knitwear or something too, but the details of the gifts we wrapped remain sketchy. The kidney (her kidney, now) is doing fine work filtering impurities from her blood. I don't think she works it as hard as I did, so things have worked out well for both of them.When she was 21, Paula had an allergic reaction t...
Source: Guardian Unlimited Science - March 13, 2010 Category: Science Authors: Peter Martin Tags: Health & wellbeing UK news Medical research The Guardian Features From the Guardian Source Type: news
Golden opportunityEmail this article to a colleague.
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Is this the world's only octogenarian early career scientist? (Source: The Scientist)
Source: The Scientist - March 13, 2010 Category: Science Authors: Jef Akst Source Type: info
Bugs on trainsEmail this article to a colleague.
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The figures for bugs in train compartments sound a little bit on the high side. Where did they come from?The figures were all very specific and very frightening. "Two thousand bugs taking a ride in every train compartment," said the Daily Mail. "Cockroaches cluster on trains," groaned the Telegraph. "Commuters share trains with 1,000 cockroaches, 200 bedbugs and 200 fleas," said the Evening Standard.These figures all sound a little bit on the high side. Where did they come from? "Staff at Rentokil sprayed insecticide throughout the carriages of a train and a bus and then counted the bodies of insects," said the Standard. I...
Source: Guardian Unlimited Science - March 12, 2010 Category: Science Authors: Ben Goldacre Tags: Rentokil Initial Media Business UK news Science The Guardian Comment Source Type: news
Roundup 3/12: Go Fish EditionEmail this article to a colleague.
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Japan's predilection for marine delicacies underlines two of today's headlines. The government formally arrested... [Read more] (Source: ScienceNOW)
Source: ScienceNOW - March 12, 2010 Category: Science Source Type: news
First direct evidence of neuroplastic changes following brainwave trainingEmail this article to a colleague.
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Significant changes in brain plasticity have been observed following alpha brainwave training. Researchers have discovered the first evidence of neuroplastic changes occurring directly after natural brainwave training. They have demonstrated that half an hour of voluntary control of brain rhythms is sufficient to induce a lasting shift in cortical excitability and intracortical function. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 12, 2010 Category: Science Source Type: news
New imaging technology brings trace chemicals into focusEmail this article to a colleague.
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Scientists have hit on a new, versatile method to significantly improve the detection of trace chemicals important in such areas as national security, human health and the environment. The research team was able to detect and identify tiny particles of the explosive trinitrotoluene or TNT -- each weighing less than a billionth of a gram -- on the ridges and canals of a fingerprint. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 12, 2010 Category: Science Source Type: news
Powerful molecule regulator in blood pressure control systemEmail this article to a colleague.
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Researchers have discovered that nitric oxide is a powerful regulator of a molecule that plays a critical role in the development and function of the nervous system. The finding could someday play a significant role in the prevention and treatment of high blood pressure, which affects about one in three adults in the United States. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 12, 2010 Category: Science Source Type: news
New way to get physical in fight against cancerEmail this article to a colleague.
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Researchers have shown that the biochemical activity of a key player in cancer metastasis can be altered by the application of a direct physical force. This new way in which cells can sense and respond to physical forces presents a new road for future cancer therapies. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 12, 2010 Category: Science Source Type: news
Children with chronic respiratory illness are vulnerable to critical H1N1Email this article to a colleague.
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As critical care professionals develop a better understanding of the progression of H1N1, they are becoming better prepared to treat children with severe cases. Additionally, with careful management, the pediatric critical care system is expected to be able to meet the increased demands of a flu pandemic. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 12, 2010 Category: Science Source Type: news
Biologists find proof of first confirmed species of monogamous frogEmail this article to a colleague.
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Amphibians may be a love 'em and leave 'em class, but one frog species defies the norm, scientists have found. Biologists have discovered in Peru the first confirmed species of monogamous amphibian, Ranitomeya imitator, better known as the mimic poison frog -- a finding that provides groundbreaking insight into the ecological factors that influence mating behavior. (Source: ScienceDaily Headlines)
Source: ScienceDaily Headlines - March 12, 2010 Category: Science Source Type: news
Software behaving badly: Machine learning could resolve issues raised by multi-core processorsEmail this article to a colleague.
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What computers have gained in speed with the introduction of multicore processors that split up workloads they may be losing in reliability. This is because software applications are written to execute different actions in a specific order. When different pieces of code are processed out of order (thanks to multi-processors' division of labor), it may cause computers to crash, leaving office workers, researchers, students, gamers and other users staring at a frozen screen. [More] (Source: Scientific American - Official RSS Feed)
Source: Scientific American - Official RSS Feed - March 12, 2010 Category: Science Tags: Technology,Communications,Computing,Consumer Electronics Source Type: journals
Spain Turns to Science for StimulusEmail this article to a colleague.
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Spain's economy is in trouble. The country's real-estate bubble has collapsed and its unemployment... [Read more] (Source: ScienceNOW)
Source: ScienceNOW - March 12, 2010 Category: Science Source Type: news
Scientists Case on Background Check Reaches High CourtEmail this article to a colleague.
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A long-running legal battle between the United States government and a group of 29... [Read more] (Source: ScienceNOW)
Source: ScienceNOW - March 12, 2010 Category: Science Source Type: news
6 Fun Facts about the James Webb Space Telescope [Slide Show]Email this article to a colleague.
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The Hubble Space Telescope is an iconic observatory, a triumph of space science that may be the most famous unmanned spacecraft since Sputnik. Hubble's renown is certainly well-deserved, but the spacecraft is aging--it will mark its 20th anniversary of reaching orbit in April. Hubble's services are still in tremendous demand, because it operates above the bulk of Earth's obfuscating atmosphere and so offers astronomers their clearest view of the distant universe. In 2014, when another large, space-borne observatory is set to be launched, the overworked Hubble should finally have some company. [More] (Source: Scientific Am...
Source: Scientific American - Official RSS Feed - March 12, 2010 Category: Science Tags: History of Science,Physics,Space,Technology,Everyday Science,Astrophysics,Galaxies,Cosmology Source Type: journals
MPs condemn homeopathy reportEmail this article to a colleague.
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An early day motion claims shortcomings in the committee's recent homeopathy "evidence check"Last month, the Commons science and technology committee published a detailed report into the evidence for the efficacy, or otherwise, of homeopathic remedies. You can read it here. After taking oral testimonies from scientists, doctors and homeopathy advocates, the committee recommended the government halt NHS funding for this kind of alternative medicine and said the Medicines and Healthcare Products Regulatory Agency should ban false statements of medical efficacy on the labels of homeopathy products.In forming their conclusions...
Source: Guardian Unlimited Science - March 12, 2010 Category: Science Authors: Ian Sample Tags: Science Homeopathy Controversies in science guardian.co.uk Blogposts Source Type: news
MIT's Suresh Tapped to Be NSF DirectorEmail this article to a colleague.
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The dean of engineering at the Massachusetts Institute of Technology is in line to... [Read more] (Source: ScienceNOW)
Source: ScienceNOW - March 12, 2010 Category: Science Source Type: news
