A Science News Aggregator That Covers Stories in the World Of Science And Technology.
Friday, September 10, 2010
5-Minute Scan Reveals Brain Maturity
A five-minute brain scan can reveal the maturity of a child's brain, according to a new study. The results could be used to track abnormal brain development and catch brain disorders like autism early.
The study, published online this week in the journal Science, uses a specialized method of mathematically sifting through magnetic resonance imaging (MRI) data to form a picture not just of the brain's structure, but the way its various regions work together.
Read more ....
Who Wants To Live For Ever?
By tweaking our DNA, we could soon survive for hundreds of years – if we want to. Steve Connor reports on a breakthrough that has the science world divided.
A genetically engineered organism that lives 10 times longer than normal has been created by scientists in California. It is the greatest extension of longevity yet achieved by researchers investigating the scientific nature of ageing.
Read more ....
Race To Take On Apple's iPad Hots Up As Top Manufacturers Launch Rivals To Bestselling Gadget
From The Daily Mail:
Apple's iPad is finally facing some competition.
At least four of the technology firm's main rivals are launching their own version of the astronomically successful tablet device that sold three million units within its first 80 days.
And just as the iPhone redefined the smart phone, triggering a raft of lookalike rivals, so the iPad has established a new market for tablet style computers - gadgets which sit between smartphones and the bulkier net books and lap tops.
Read more ....
Artificial Intelligence: Riders On A Swarm
From The Economist:
Mimicking the behaviour of ants, bees and birds started as a poor man’s version of artificial intelligence. It may, though, be the key to the real thing.
ONE of the bugaboos that authors of science fiction sometimes use to scare their human readers is the idea that ants may develop intelligence and take over the Earth. The purposeful collective activity of ants and other social insects does, indeed, look intelligent on the surface. An illusion, presumably. But it might be a good enough illusion for computer scientists to exploit. The search for artificial intelligence modelled on human brains has been a dismal failure. AI based on ant behaviour, though, is having some success.
Read more ....
The Truth Is Out There (In Area 51)
(Courtesy KPITV; Map: USGS)
From Air & Space Magazine:
A veteran reporter describes his search for the aircraft of Area 51.
"And you'll see a very long runway right...there." Our aircraft commander jabbed a finger at a small, cross-hatched circle on the U.S. Air Force navigation chart. "But, even if we lose all four engines," he said, "we will not land on it.”
“Why not, sir?” I asked.
“We’d be there a long time and have to answer a lot of questions,” the commander replied, then moved on to the next day’s mission preview. A four-stripe sergeant leaned toward me. “That’s Groom Lake,” he said under his breath. “That’s where the really secret [stuff] happens.”
Read more ....
What Killed The Mammoths? Alien Nanodiamonds May Hold The Answer
From Popular Science:
Do nanodiamonds prove an asteroid impact killed off North America's massive mammals 13,000 years ago? It depends on which scientist you ask.
A pair of studies published in the last month offer competing theories about whether an extraterrestrial object killed megafauna like woolly mammoths and sabre-toothed cats, along with the Clovis culture of North American human settlers.
Read more ....
Mining The Truth On Coal Supplies
From National Geographic:
A view that the world’s leading electricity fuel—and major contributor to climate change—is running out.
This story is part of a special series that explores energy issues. For more, visit The Great Energy Challenge.
No matter how bad coal might be for the planet, the conventional wisdom is that there is so much of it underground that the world’s leading fuel for electricity will continue to dominate the energy scene unless global action is taken on climate change.
But what if conventional wisdom is wrong?
A new study seeks to shake up the assumption that use of coal, the most carbon-intensive fossil fuel, is bound to continue its inexorable rise. In fact, the authors predict that world coal production may reach its peak as early as next year, and then begin a permanent decline.
Read more ....A Cellular Secret To Long Life
Just as proper storage keeps a loaf fresh longer, adequate packaging may be a key to cellular longevity, reports a study of the organisms that make bread rise.
New research on aging in baker’s yeast suggests that proper packaging of DNA can halt aging and lead to longer life. The study, published September 10 in Molecular Cell, shows that a decline in levels of DNA-packaging proteins called histones is partially responsible for aging, and that making more of the proteins can extend the life-span of yeast.
Read more ....
Ancient Greeks Spotted Halley's Comet
From New Scientist:
A CELESTIAL event in the 5th century BC could be the earliest documented sighting of Halley's comet - and it marked a turning point in the history of astronomy.
According to ancient authors, from Aristotle onwards, a meteorite the size of a "wagonload" crashed into northern Greece sometime between 466 and 468 BC. The impact shocked the local population and the rock became a tourist attraction for 500 years.
Read more ....
Thursday, September 9, 2010
Big Bang Was Followed by Chaos, Mathematical Analysis Shows
From Science Daily:
ScienceDaily (Sep. 8, 2010) — Seven years ago Northwestern University physicist Adilson E. Motter conjectured that the expansion of the universe at the time of the big bang was highly chaotic. Now he and a colleague have proven it using rigorous mathematical arguments.
Read more ....
Herb Quells Cows' Methane-Laden Belches
From Live Science:
For scientists concerned about greenhouse gas emissions, cow farts are nowhere near as problematic as their methane-laden belches. Now a new oregano supplement could stem the burps and reduce the potent methane emissions.
Worldwide, cows are responsible for 37 percent of the human-produced methane, according to study researcher Alexander Hristov, an associate professor of dairy nutrition at Penn State University. Most of that methane comes not from the backsides of cows, but from the gas they belch after digesting their food, according to Hristov and the Food and Agriculture Organization of the United Nations.
Read more ....
My Comment: Belching creates more methane gas than farting .... that is news to me.
Whoops! The 10 Greatest (Accidental) Inventions of All Time
From Gizmodo:
"Everything comes to him who hustles while he waits," Thomas Edison once said. But is hustling all it takes? Is progress always deliberate? Sometimes genius arrives not by choice—but by chance. Below are our ten favorite serendipitous innovations.
Read more ....
The 727 That Vanished
From Air & Space Magazine:
A case pursued by the FBI, the CIA, the U.S. Departments of State and Homeland Security, CENTCOM, and the sister of Ben Padilla.
Seven years after her brother disappeared from Quatro de Fevereiro International Airport in Angola, Benita Padilla-Kirkland is trying to persuade the FBI to re-open his case. She believes she has the “new information” agents told her they require. But she suspects that the agency already has more information than agents will admit to.
Read more ....
Archive Gallery: The Twentieth Century's Best-Kept Military Secrets
From Popular Science:
Death-ray bombs, giant flamethrowers, unclassified airfields, and more of history's deepest military secrets.
It's hard to look at military spending without wondering what's behind the scenes.. For instance, in this month's issue of Popular Science, we investigate what exactly the Pentagon is getting for the $58 billion it has dropped on classified assassination weapons.
Read more ....
My Comment:View the photo gallery starting here.
Warming Solution: Just Stop Cold?
From National Geographic:
The greatest climate threat is from future cars and building, study says.
This story is part of a special series that explores energy issues. For more, visit The Great Energy Challenge.
Imagine that tomorrow, the whole world will stop building things that burn fossil fuels—cars and planes, power plants, and housing tracts.
How much more global warming would the planet endure?
(See Related, from National Geographic Channel: "Aftermath: Population Zero" )
This might sound like an environmentalist's dream—or a CEO's nightmare—but it's a serious question addressed by a new study published in the September 10 issue of Science.
Read more ....Mars Shows Signs Of Recent Activity
From Science News:
Carbon dioxide measurements suggest liquid water and volcanoes in past 100 million years.
New evidence suggests that Mars was much more active in the relatively recent past, with volcanoes erupting and water flowing on its surface within the past 100 million years.
Read more ....
Skydiving From The Edge Of Space: Can A Human Break The Sound Barrier?
From The Guardian:
A person freefalling from 120,000 feet would theoretically reach a supersonic speed of over 700mph. Two daredevils of the skies are racing to break the sound barrier – and face unknown hazards in their attempt.
We know this. At around 120,000 feet, on the fringes of space, the air is so thin that a falling human body would travel fast enough to exceed the speed of sound. A skydiver, properly equipped with pressurised suit and a supply of oxygen to protect against the hostile elements, could feasibly jump from that height and, about 30 seconds later, punch through the sound barrier – becoming the first person ever to go "supersonic" without the aid of an aircraft or space shuttle.
Read more ....
World's Most Expensive Book Up For Grabs
From New Scientist:
If you like this picture of snowy owls and have a spare £4 to £6 million floating around, you might want make a bid for Audubon's book Birds of America when it goes to auction on 7 December at Sothebys, London.
Read more ....
Evolving Culture: Where Do We Go From Here?
From NPR:
For billions of years, the environment and how it affected organisms' genes was the key to evolution. But in the past 10,000 years, for humans at least, genetic evolution has been nudged aside by something more powerful.
"What we are able to do which other animals aren't able to do is to rapidly adapt to completely new environments," says Robert Boyd, an anthropologist at the University of California, Los Angeles. "Most animals — all animals except humans — would have to adapt to that by changing genetically."
Read more ....
Extreme X-Ray Source Suggests New Class of Black Hole
From Science Daily:
ScienceDaily (Sep. 8, 2010) — A group of international astronomers in the UK, France and the USA, led by the University of Leicester, have found proof to confirm the distance and brightness of the most extreme ultra-luminous X-ray source, which may herald a new type of Black Hole.
Read more ....
Humpback Dinosaur Surprises and Puzzles Experts
From Live Science:
A hunchback dinosaur of sorts once roamed what is now central Spain. The meat-eating beast sported a humplike structure low on its back, a feature never previously described in dinosaurs, and one that has scientists scratching their heads.
The dinosaur, which is being called Concavenator corcovatus, measured nearly 20 feet (6 meters) in length and belonged to a group of some of the largest predatory dinosaurs known to walk the earth — carcharodontosaurs. It lived some 125 million years ago.
Read more ....
The New iPod Line: A Mix Of Hits And Misses
From Chicago Sun Times:
September means three things: letter carriers and UPS delivery drivers tentatively start wearing long pants again, there will be a day when your entire sunny disposition is soured by the sounds of the first Christmas ad of the season ... and Apple releases updates to all of their iPods.
I’ve had time to use the new Shuffle, Nano, and Touch and I declare the 2010 editions to be a mixed bag. One is a retreat back that amounts to a big step forward; another is set of “under the hood” upgrades that adds true muscle car performance; and the third is ...
... um ...
Quite creative.
Read more ....
Junkie Food: Tastes Your Brain Can't Resist
From New Scientist:
Is that cupcake an innocent indulgence? Or your next hit? We're finding that a sweet tooth makes you just as much an addict as snorting cocaine
SETTLED on the sofa watching the usual rubbish on TV, I notice that predictable, uncontrollable, nightly craving. At first I sit there, fighting it. But the longer I fight, the worse it gets. After 20 minutes, I can't concentrate on anything, I feel anxious, and start fidgeting like crazy. Finally, admitting my addiction, I break. I go to the freezer - to my stash of white stuff - and take a hit. Almost instantly, I relax, my brain in a state of bliss as the chemical courses through my veins. Isn't it amazing what a few scoops of ice cream can do?
Read more ....
Brace For Global Cooling, Says The Old Farmer's Almanac
From FOX News:
DUBLIN, N.H. – Most of the country will see a colder-than-usual winter while summer and spring will be relatively cool and dry, according to the time-honored, complex calculations of the "Old Farmer's Almanac."
The 2011 issue of the almanac, which claims to be the nation's oldest continuously published periodical, was released Tuesday. It predicts that in the coming months, the Earth will continue to see a "gradual cooling of the atmosphere ... offset by any warming caused by increased greenhouse gases."
Read more ....
Optical Speedbumps Create Illusion of Little Girl Darting Out In Front Of You
From Popular Science:
Civil authorities around the world have tried all kinds of tricks to get drivers to slow down: speed bumps, rumble strips, flashing lights, the decoy police cruiser, and of course the good old-fashioned speed trap. The British Columbia Automobile Association Traffic Safety Foundation is taking a different tack: scaring the living hell out of drivers. In an effort to brusquely remind drivers of the consequences of wanton acceleration, they’re painting an elongated image of a child chasing a ball into the street in 2-D on the pavement in such a way that it appears three-dimensional.
Read more ....
Human Body Parts Found in Tiger Shark's Stomach
From Discovery News:
The legs, arms and severed torso of a person were all found inside the stomach of a tiger shark caught by sport fishermen last weekend, according to The Press Association, The Boston Herald, and numerous other reports.
Tiger sharks can swim over long distances, so it is not yet clear where the 12-foot-long shark consumed its human victim. Police are currently conducting DNA tests on the person's remains, Assistant Police Commissioner Glenn Miller in Nassau, Bahamas, told AP.
Read more ....
Ipad Killers
From CBS:
The product that ignited what until then had been a dormant market, Apple's iPad dominates the category. But its success has ignited the imagination of rivals who are prepping their own tablet computers - some of which are now available, others which are expected soon. Some made a splash last week at the IFA Berlin show last week and more doubtless will debut at the Consumer Electronics Show in January. This much is clear: If the iPad is not your cup of tea, sit tight - fairly soon, there are going to be far more consumer touch-screen tablets to choose from.
Read more ....
One In Four Gives Fake Net Names
More than a quarter of people online have lied about their name and more than one in five has done something online they regret, says a new report.
The behavioural and psychological impacts of online life are outlined in a report from the security firm Norton.
The report suggests that two-thirds of web users have been hit by cybercrime, with the costs and time to resolve the crime varying widely around the world.
Read more ....
Fundamental Constant Might Change Across Space
From Space Daily:
New research suggests that the supposedly invariant fine-structure constant, which characterizes the strength of the electromagnetic
force, varies from place to place throughout the Universe. The finding could mean rethinking the fundaments of our current knowledge of physics.
These results will be presented tomorrow during the Joint European and National Astronomy Meeting in Lisbon, Portugal, and the scientific article has been submitted to the Physical Review Letters Journal.
Read more ....
Wednesday, September 8, 2010
The Brain Speaks: Scientists Decode Words From Brain Signals
From Science Daily:
ScienceDaily (Sep. 6, 2010) — In an early step toward letting severely paralyzed people speak with their thoughts, University of Utah researchers translated brain signals into words using two grids of 16 microelectrodes implanted beneath the skull but atop the brain.
Read more ....
NASA Team To Trapped Miners: No Alcohol Or Cigarettes
From Live Science:
After spending almost a week in Chile, a team of NASA personnel sent to provide nutritional advice and psychological support to 33 trapped miners reported Tuesday that the efforts of the Chilean government have been outstanding so far, and the focus needs to be on long-term strategies that will allow the men to live sustainably underground as a community.
Read more ....
The Shark Soup Massacre And How To Stop It
From New Scientist:
Sharks attacking humans is big news; humans attacking sharks, not so much. Conservation photographers Paul Hilton and Alex Hofford are trying to redress this imbalance. In revealing the extent of the bloody trade in shark fins, their book Man and Shark is a testament of our cruelty towards these majestic creatures.
Hilton and Hofford, who both live in Hong Kong, have witnessed the butchery of sharks in places as diverse as Mozambique, Yemen and Sri Lanka. But Hofford had seen nothing until he went to Japan.
Read more ....
Scientists Invent A Tractor Beam
From FOX News:
WASHINGTON – Tractor beams, energy rays that can move objects, are a science fiction mainstay. But now they are becoming a reality -- at least for moving very tiny objects.
Researchers from the Australian National University have announced that they have built a device that can move small particles a meter and a half using only the power of light.
Read more ....
Airborne Laser Weapon Fails to Take Down Dummy Nuke In Critical 100-Mile Test Shot
From Popular Science:
The Missile Defense Agency’s Airborne Laser Test Bed (ALTB) – formerly known simply as the Airborne Laser – has endured a back-and-forth existence, at different times the darling of the MDA, at other times on the verge of catching the Pentagon or Congressional axe. But after an all-around success in February, the scales have tipped back the other way for the embattled ICBM-blaster as it failed a critical test on September 1.
Read more ....
Hubble Spots Ghostly Space Spiral
From Discovery News:
When I first saw this ghostly Hubble Space Telescope image, I assumed that faint blurry spiral was a lens flare or some other photographic anomaly. But on closer inspection, the details started to present themselves.
As imaged by the space telescope's sensitive Advanced Camera for Surveys, this striking pattern is formed by material being ejected from a dying star. But this isn't a lone star; there's a second star -- a binary partner -- orbiting with it and modulating the expanding gas.
Read more ....
Mystery Of Google Doodles Answered: 'Google Instant'
From CBS News:
The big tease of the last few days is over: Google earlier today announced a search enhancement called Google Instant.
Google Instant, which is rolling out through the course of the day, evolved from the company's mission to speed up search results for Internet queries. The basic change means that users will find a changing set of results in the middle of the page each time they type in a character into the search box. The added technology is designed to help Google's search engine predict what a person might be searching for.
Read more ....
Are We Closer To A 'Theory Of Everything'?
The physicists' ultimate dream is the search for a "theory of everything", a unifying explanation that can make sense of the infinitely tiny as well as the infinitely large.
From the strange particles that are the terrain of atom-smashing machines such as the Large Hadron Collider (LHC) at Cern, to galaxies beyond our own, about which we're learning more and more through increasingly powerful telescopes and observatories.
Read more ....
Two Asteroids To Pass By Earth Wednesday
From Space Daily:
Two asteroids, several meters in diameter and in unrelated orbits, will pass within the moon's distance of Earth on Wednesday, Sept. 8.
Both asteroids should be observable near closest approach to Earth with moderate-sized amateur telescopes. Neither of these objects has a chance of hitting Earth.
Read more ....
The Boss Is Robotic, And Rolling Up Behind You
From The New York Times:
SACRAMENTO — Dr. Alan Shatzel’s pager beeped at 9 on a Saturday morning. A man had suffered a stroke, and someone had to decide, quickly, whether to give him an anticlotting drug that could mean the difference between life and death.
Dr. Shatzel, a neurologist, hustled not to the emergency room where the patient lay — 260 miles away, in Bakersfield — but to a darkened room at a hospital here. He took a seat in front of the latest tools of his trade: computer monitors, a keyboard and a joystick that control his assistant on the scene — a robot on wheels.
Read more ....
Can We Spot Volcanoes On Alien Worlds? Astronomers Say Yes
From Science Daily:
ScienceDaily (Sep. 7, 2010) — Volcanoes display the awesome power of Nature like few other events. Earlier this year, ash from an Icelandic volcano disrupted air travel throughout much of northern Europe. Yet this recent eruption pales next to the fury of Jupiter's moon Io, the most volcanic body in our solar system.
Read more ....
New Details On How The Brain Responds To Fear
Some ostensibly important politician once said, "The only thing we have to fear...is that a mad scientist will learn how to directly manipulate the brain regions responsible for fear itself." Whoever that was, he or she could not have been more insightful.
Thanks to some recent work from the European Molecular Biology Laboratories (EMBL) and pharmaceutical company GlaxoSmithKline, fear itself might soon become the linchpin of this mad scientist's quest for world domination.
Read more ....
Apple iPod Touch (4th Gen. With Camera)
From PC Magazine:
Apple's fourth-generation iPod touch finally gets a camera for HD video recording, and still-photo capture. Plus a second, front-facing camera brings FaceTime video chat to the touch. On the new high-res Retina display, everything looks crisp and colorful, and the screen remains highly responsive to touch. Apple eliminated video playback from its sixth-generation iPod nano ($149, ), making the touch the least-expensive video-playing iPod. Starting at $229 (direct, 8GB), however, it's not cheap, and that isn't much storage for an HD video device. The $299 32GB player seems like the best deal, while the 64GB model offers twice the storage, but remains exorbitantly priced at $399. Despite the cost, the iPod touch remains, by far, the best portable media player you can buy—and it retains our Editors' Choice crown.
Read more ....
How Websites Make You Spill Your Secrets
From Technology Review:
People divulge more sensitive information on sites that look less safe.
Researchers at Carnegie Mellon University have found that the appearance of website has a big effect on how honestly people answer personal questions put to them by the site. But paradoxically, it turns out we're more likely to spill our secrets on websites that appear less reputable. The way a website phrases questions also affects our willingness to disclose revealing information, the researchers found.
Read more ....
Are We Living In A Designer Universe?
From The Telegraph:
The creators of the world were closer to men than to gods, argues John Gribbin.
The argument over whether the universe has a creator, and who that might be, is among the oldest in human history. But amid the raging arguments between believers and sceptics, one possibility has been almost ignored – the idea that the universe around us was created by people very much like ourselves, using devices not too dissimilar to those available to scientists today.
Read more ....
Google TV To Launch This Year
From The Guardian:
The new Google service will bring the web to TV screens – the announcement comes a week after a new version of Apple TV was unveiled.
Google will launch its Google TV service, which it intends will bring the web to TV screens, in the US this autumn and around the world next year, its chief executive, Eric Schmidt, said today.
In its sights will be a slice of the £117bn global TV advertising market – which it will want to add to its online advertising revenues, which totalled $22.9bn (£14.94bn) in 2009.
Read more ....
Boeing's Billion Dollar Gamble
It's made in the world's biggest building, takes only four days to put together and is the first commercial aircraft built from carbon composites, but will the revolutionary new Dreamliner win the battle for our skies?
Tucked away in the upper north-west corner of the U.S., about 30 miles north of Seattle, sits the biggest building in the world, utterly dominating the town of Everett. It's three-quarters of a mile long and a third of a mile wide. Beneath the concrete floors there are two miles of pedestrian tunnels, while nestling in the five-storey structures that have sprung up inside the place are meeting rooms, offices and cafes. The inhabitants of this strange, vast palace get around on golf buggies and bicycles. It's so huge that the storm water runoff ponds - a must in Seattle winters - are large enough to float an ocean-going liner, and it has its own fire department.
Read more ....
Money Can Buy You Happiness – Up To A Point
CAN money buy you happiness? The answer, it appears, depends on what you mean by "happiness". High earners are generally more satisfied with their lives, it seems, but a person's day-to-day emotional wellbeing is only influenced by money up to a certain point.
Read more ....
How To Make The Perfect French Fry
From Popular Mechanics:
For fare that looks so effortlessly prepared by millions of restaurant chains and festivals all over America, fried foods undergo a harrowing series of chemical reactions before they end up on your plate. Take the common French fry. Copying the magic of even a simple oil-cooked potato at home requires diligence, resources and certain flirtation with danger. Here is the food science you need to know to fry.
Read more ....
What Was On Display At A Drone Trade Show
Take a photo tour of AUVSI, the Association for Unmanned Vehicle Systems International trade show in Denver
When most people think "trade show," what comes to mind are harsh fluorescent lights and hollow convention halls, all filled with corporate drones (of the human variety) idly wandering through booths hyping the latest in office paper technology, stopping only to hover over bowls of stale candy and cheap swag.
Read more ....
My Comment: The photo gallery is here.
Tuesday, September 7, 2010
Fears Of A Decline In Bee Pollination Confirmed
From Science Daily:
ScienceDaily (Sep. 7, 2010) — Widespread reports of a decline in the population of bees and other flower-visiting animals have aroused fear and speculation that pollination is also likely on the decline. A recent University of Toronto study provides the first long-term evidence of a downward trend in pollination, while also pointing to climate change as a possible contributor.
Read more ....
Mediterranean Shipwrecks Reveal Shift To Modern Shipbuilding
From Live Science:
Three recently discovered shipwrecks in the Mediterranean Sea could give archaeologists new insights into the transition between medieval and modern shipbuilding.
The remains of the three craft – all dating from between 1450 and 1600 – were found in the straits between Turkey and the Greek island of Rhodes. One ship appears to be a large English merchant ship, while the other two are smaller – perhaps a patrol craft from Rhodes and a small trading boat that could have been Turkish, Italian or Greek.
Read more ....