×
Science

Pigeons May 'Hear' Magnetic Fields 55

Posted by Soulskill from the for-the-birds dept.
ananyo writes "Individual neurons in birds' brains can relay crucial information about Earth's magnetic field, possibly providing the animals with an 'internal GPS.' Pigeons' remarkable navigational feats have long been pegged to the birds' ability to sense magnetic fields, but pinning down how they do so has frustrated scientists for years. Work published in Science (abstract) shows that individual cells seem to encode information on a magnetic field's direction, intensity and polarity. The work also suggests that these signals come from a part of the inner ear called the lagena, further complicating matters for researchers in the field. The Science paper comes just days after a report in Nature (abstract) revealed that cells in pigeons' upper beaks, previously thought to be magnetoreceptors, are actually immune cells called macrophages."
ISS

DARPA Aims To Reuse Space Junk 67

Posted by Soulskill from the cannibal-satellites-dueling-for-survival dept.
CowboyRobot writes "Space junk has increased to the point where pieces of it are colliding and breaking into smaller pieces. The problem is now so bad that NASA has had to modify the design of satellites to protect them from flying debris. The Defense Advanced Research Projects Agency (DARPA) wants to turn disabled satellites and their components, including antennas and solar arrays, into functioning systems. They are hosting a conference on June 26 to explore how to build 'refurbished' satellites from already-orbiting material for less than what it would cost to build them from scratch and launch them from the surface of the Earth."
The Almighty Buck

Good News For US Fusion Research 149

Posted by Soulskill from the all-about-the-benjamins dept.
zrbyte writes "Fusion research would get a major boost in a Department of Energy (DOE) spending bill approved today by the U.S. House of Representatives Committee on Appropriations. The panel rejected an Obama Administration proposal to cut funding for domestic fusion research in the 2013 fiscal year, which begins 1 October. It would also give more money than requested to an international collaboration building the ITER fusion reactor in France. This will allow the Alcator C-Mod fusion facility at the Massachusetts Institute of Technology in Cambridge to be kept open, which the Administration had proposed closing."
Space

Key Test For Skylon Spaceplane Engine Technology 92

Posted by Soulskill from the skylons-were-created-by-man dept.
Ogi_UnixNut writes "The Skylon spaceplane is an ambitious project to develop a single-stage-to-orbit craft that can take off and land like a normal airplane. Part of this project requires an engine that can work both as a rocket engine and a normal air-breathing engine (a hybrid approach, essentially). This would reduce the amount of oxidizer required to send stuff into space, and thus greatly reduce the cost. Now, some key experimental parts of the engine have been built, and are to be tested in public at the Farnborough Air Show in the UK in July. The BBC has video of the cooling system being tested."
Science

Analytic Thinking Can Decrease Religious Belief 1258

Posted by Soulskill from the can-of-worms dept.
Freshly Exhumed writes "A new University of British Columbia study finds that analytic thinking can decrease religious belief, even in devout believers. The study, which will appear in tomorrow's issue of Science (abstract), finds that thinking analytically increases disbelief among believers and skeptics alike, shedding important new light on the psychology of religious belief."
Medicine

Bionic Eye Patient Tests Planned For 2013 59

Posted by samzenpus from the gentlemen-we-can-rebuild-him dept.
angry tapir writes "Australian researchers are getting ready to test a bionic eye on patients in 2013. The eye consists of 98 electrodes that stimulate nerve cells in the retina, which is a tissue lining the back of the eye that converts light into electrical impulses necessary for sight, and allow users to better differentiate between light and dark. With the bionic eye, images taken by a camera are processed in an external unit, such as a smartphone, then relayed to the implant's chip. This stimulates the retina by sending electric signals along the optic nerve into the brain where they are decoded as vision."
Mars

BOLD Plan To Find Mars Life On the Cheap 61

Posted by samzenpus from the budget-search dept.
techfun89 writes "There is a BOLD new plan for detecting signs of microbial life on Mars. The nickname is BOLD, which stands for Biological Oxidant and Life Detection Initiative, would be a follow-up to the 1976 Mars Viking life-detection experiments. 'We have much better technology that we could use,' says BOLD lead scientist Dirk Schulze-Makuch, with Washington State University. He elaborates, 'Our idea is to make a relatively cheap mission and go more directly to characterize and solve the big question about the soil properties on Mars and life detection.' To help figure out the life-detection mystery, Schulze-Makuch and his colleagues would fly a set of six pyramid-shaped probes that would crash land, pointy end down, so they embed themselves four to eight inches into the soil. One of the instruments includes a sensor that can detect a single molecule of DNA or other nucleotide."
Science

Ask Slashdot: What Are the Most Dangerous Lines of Scientific Inquiry? 456

Posted by samzenpus from the don't-even-ask dept.
gbrumfiel writes "The battle over whether to publish research into mutant bird flu got editors over at Nature News thinking about other potentially dangerous lines of scientific inquiry. They came up with a non-definitive list of four technologies with the potential to do great good or great harm: Laser isotope enrichment: great for making medical isotopes or nuclear weapons. Brain scanning: can help locked-in patients to communicate or a police state to read minds. Geoengineering: could lessen the effects of climate change or undermine the political will to fight it. Genetic screening of embryos: could spot genetic disorders in the womb or lead to a brave new world of baby selection. What would Slashdotters add to the list?"
Earth

Organics Can't Match Conventional Farm Yields 452

Posted by timothy from the that's-what-they-want-you-to-think dept.
scibri writes "A comprehensive analysis published in Nature (abstract) suggests that organic farming could supply needs in some circumstances. But yields are lower than in conventional farming, so producing the bulk of the globe's diet will still require chemical fertilizers and pesticides. The meta-analysis reviewed 66 studies comparing the yields of 34 different crop species in organic and conventional farming systems. The researchers included only studies that assessed the total land area used, allowing them to compare crop yields per unit area. Many previous studies that have showed large yields for organic farming ignore the size of the area planted — which is often bigger than in conventional farming. Crop yields from organic farming are as much as 34% lower than those from comparable conventional farming practices, though in some cases, notably with strawberries and soybeans, the gap is as small as 3%."
NASA

Is Extraterrestrial Life More Whimsical Than Plausible? 344

Posted by timothy from the eeeehhhlliott dept.
coondoggie writes "Princeton University researchers are throwing some cold water on the hot notion that astrobiologists and other scientists expect to one day find life on other planets. Recent discoveries of planets similar to Earth in size and proximity to the planets' respective suns have sparked scientific and public excitement about the possibility of also finding Earth-like life on those worlds, but the expectation that life — from bacteria to sentient beings — has or will develop on other planets as on Earth might be based more on optimism than scientific evidence."
Math

Study Suggests the Number-Line Concept Is Not Intuitive 404

Posted by samzenpus from the learning-to-count dept.
An anonymous reader writes "The Yupno people of New Guinea have provided clues to the origins of the number-line concept, and suggest that the familiar concept of time may be cultural as well. From the article: 'Tape measures. Rulers. Graphs. The gas gauge in your car, and the icon on your favorite digital device showing battery power. The number line and its cousins – notations that map numbers onto space and often represent magnitude – are everywhere. Most adults in industrialized societies are so fluent at using the concept, we hardly think about it. We don't stop to wonder: Is it 'natural'? Is it cultural? Now, challenging a mainstream scholarly position that the number-line concept is innate, a study suggests it is learned."
Science

Insects Develop Pesticide Resistance Through Symbiosis With Gut Flora 144

Posted by samzenpus from the with-a-little-help-from-my-little-friends dept.
First time accepted submitter blinkin247 writes "The indiscriminate spraying of pesticides has probably caused as many problems as it has solved, but here's one that was not expected: some bacteria have decided that insecticide is a very tasty meal. Unfortunately for us, one of the strains of bacteria that has evolved the ability to digest the toxin happens to be able to find a home in an insect's gut. When it does so, it provides the insect with resistance."
Science

Solar Cells That Emit Light Break Efficiency Record 139

Posted by samzenpus from the shine-on dept.
benfrog writes "Researchers at the University of California-Berkeley say they have come up with a counter-intuitive way of making solar cells more efficient — making them emit light. In a press release the scientists claim to be the first to demonstrate that the better solar cells are at emitting photons (the more LED-like they are), the more efficient they are at generating electricity. However, 'unlike an LED, the electrons in a solar cell are absorbing photons from an exterior source as well as emitting their own.'"
Space

World's Largest Digital Camera Project Passes Critical Milestone 73

Posted by samzenpus from the have-some-funding dept.
An anonymous reader writes in with a link about the progress of one of the coolest astronomy projects around. "A 3.2 billion-pixel digital camera designed by SLAC National Accelerator Laboratory is now one step closer to reality. The Large Synoptic Survey Telescope camera, which will capture the widest, fastest and deepest view of the night sky ever observed, has received 'Critical Decision 1' approval by the U.S. Department of Energy (DOE) to move into the next stage of the project. The Large Synoptic Survey Telescope (LSST) will survey the entire visible sky every week, creating an unprecedented public archive of data – about 6 million gigabytes per year, the equivalent of shooting roughly 800,000 images with a regular eight-megapixel digital camera every night, but of much higher quality and scientific value. Its deep and frequent cosmic vistas will help answer critical questions about the nature of dark energy and dark matter and aid studies of near-Earth asteroids, Kuiper belt objects, the structure of our galaxy and many other areas of astronomy and fundamental physics."
Moon

NASA and Astrobotic Investigating Ice Hunting Mission to the Moon 46

Posted by Unknown Lamer from the repurposed-as-newt's-moon-scooter dept.
Zothecula writes, quoting Gizmodo "While the Moon may or may not contain life forms, precious metals or even green cheese, recent satellite missions have indicated that it does nonetheless contain something that could prove quite valuable — water ice. NASA has estimated that at least 650 million tons (600 million tonnes) of the stuff could be deposited in craters near the Moon's north pole alone. If mined, it could conceivably serve as a source of life support for future lunar bases, or it could be used to produce fuel for spacecraft stopping at a "lunar gas station." Before any mining can happen, however, we need to learn more about the ice. That's why NASA has contracted Pittsburgh-based Astrobotic Technology to determine if its Polaris rover robot could be used for ice prospecting."
It's funny. Laugh.

Travelling Salesman, Thriller Set In a World Where P=NP Screenshot-sm 165

Posted by Unknown Lamer from the very-serious-faces-throughout dept.
mikejuk writes with this excerpt from I Programmer: "A movie that features science and technology is always welcome, but is it not often we have one that focuses on computer science. Travelling Salesman is just such a rare movie. As you can guess from its name, it is about the Travelling Salesman problem, more precisely about the P=NP question. Written and directed by Timothy Lanzone, and produced by Fretboard Pictures, it should premiere on June 16. As the blurb to the movie trailer says: 'Travelling Salesman is an intellectual thriller about four of the world's smartest mathematicians hired by the U.S. government to solve the most elusive problem in computer science history — P vs. NP. The four have jointly created a "system" which could be the next major advancement for humanity or the downfall of society.'"
Censorship

Avian Flu Researcher Backs Down On Plan To Defy Publishing Ban 54

Posted by Unknown Lamer from the would-like-to-see-family-live dept.
ananyo writes "Ron Fouchier, a researcher at the Erasmus Medical Center in Rotterdam, the Netherlands, whose work on the H5N1 avian flu virus has been embroiled in controversy, has now agreed to apply for an export permit to submit his work to the journal Science. Fouchier's paper is one of two reporting the creation of forms of the H5N1 virus capable of spreading between mammals. The other, by Yoshihiro Kawaoka of the University of Wisconsin, Madison, and the University of Tokyo, and his colleagues, has already been submitted to Nature. Fouchier had said last week that he intended to defy the government and submit the work to Science without seeking the export permit that the Dutch government says is required." In related news, renek noted that the U.S. NIH director supports publishing the papers in full.
Medicine

Mad Cow Disease Confirmed In California 274

Posted by Soulskill from the denny-crane dept.
New submitter wave9x writes "The United States Department of Agriculture confirmed today that the nation's fourth case of bovine spongiform encephalopathy, sometimes referred to as 'mad cow disease' was found in a dairy cow in California. The animal has been euthanized and the carcass is being being held under State authority at a rendering facility in California and will be destroyed."
Biotech

Scientists Clone Sheep With 'Good' Fat 233

Posted by Soulskill from the pulling-the-wool-over-your-stomach's-eyes dept.
redletterdave writes "Chinese scientists have cloned a genetically modified sheep containing a 'good' type of fat found naturally in nuts, seeds, fish and leafy greens that helps reduce the risk of heart attacks and cardiovascular disease. The gene, which is linked to the production of polyunsaturated fatty acids, was inserted into a donor cell taken from the ear of a Chinese Merino sheep. The cell was then inserted into an unfertilized egg and implanted into the womb of a surrogate sheep. With any luck, this process could be replicated in the future to clone more animals for safe and healthy consumption."
Medicine

Childhood Stress Leaves Genetic Scars 334

Posted by Soulskill from the stories-told-in-base-pairs dept.
sciencehabit writes "Traumatic experiences in early life can leave emotional scars. But a new study suggests that violence in childhood may leave a genetic mark as well. Researchers have found that children who are physically abused and bullied tend to have shorter telomeres — structures at the tips of chromosomes whose shrinkage has been linked to aging and disease."

Slashdot Top Deals