A Science News Aggregator That Covers Stories in the World Of Science And Technology.
Friday, January 28, 2011
Slithering Robots Learn To Stand On Their Own Four Feet
From Live Science:
Robots that evolved from crawling babies into upright adults could help pave the way for better bots.
Using a computer program, researchers at the University of Vermont simulated a population of naive "baby" robots. The robots had to complete various tasks in their virtual environment, such as finding objects and walking toward them. Those robots that performed poorly got deleted, while the best-performing ones remained "alive."
The robots that changed their body forms (like tadpoles growing into frogs) learned to walk more rapidly and developed the most stable gait, the researchers found.
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Wikileaks Now Has A Competitor
DAVOS, Switzerland -- A former member of the group that created WikiLeaks has launched a rival website with the aim of giving whistleblowers more control over the secrets they spill.
Daniel Domscheit-Berg says the new platform called OpenLeaks will allow sources to choose specifically who they want to submit documents to anonymously, such as to a particular news outlet.
He told reporters Friday that the site will begin testing in several weeks and hopes it will be fully operational later this year.
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OpenLeaks Site Leaked, Forces Premature Launch of WikiLeaks Rival -- FOX News
OpenLeaks Site Leaked Before Launch -- Information Week
WikiLeaks rival goes live as editors turn on Assange -- Sydney Morning Herald
Wikileaks breakaway site Openleaks gets leaked -- Inquirer
WikiLeaks rival website launches -- Inquirer
WikiLeaks alternative OpenLeaks goes live -- Ars Technica
My Comment: I wish them luck.
Climate In The Past Had An Impact On Europe's Rise And Fall
Tree rings can show environmental changes throughout history, which can be linked to major ups and downs in European history, according to new research. Credit: iStockPhotoWASHINGTON: Ancient tree rings show links between climate change and major events in human history, like migrations, plagues and the rise and fall of empires, according to a new study.
The study, which appears in the journal Science , shows moist, balmy temperatures were seen during prosperous Medieval and Roman times, while droughts and cold snaps coincided with mass migrations.
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Man's Migration Out Of Africa More Complicated Than Thought

The bodies are still missing, but a prehistoric toolkit discovered in the United Arab Emirates has led some archaeologists to propose a more complex scenario for humanity’s emigration out of Africa.
Uncovered at a Jebel Faya rock shelter, just west of the Straits of Hormuz at the mouth of the Persian Gulf, the tools are 125,000 years old. Previous estimates placed the dispersal of modern humans from North Africa around 70,000 years ago. If correct, this new study indicates that humans in eastern Africa left earlier, and traveled to Arabia.
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My Comment: Time to change the history books.
Energy Efficiency Could Cut World Energy By 70%
Alan Simpson calls the national energy grid 'monumentally inefficient' ... electricity pylons in Suffolk. Photograph: Graham Turner/GuardianSimple changes like installing better building insulation could cut the world's energy demands by three-quarters, according to a new study.
Discussions about reducing greenhouse gas emissions usually concentrate on cleaner ways of generating energy: that's because they promise that we can lower emissions without having to change our energy-hungry ways. But whereas new generation techniques take years to come on stream, efficiency can be improved today, with existing technologies and know-how.
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My Comment: 70% reduction .... in your dreams.
Using Plants In The Fight Against Terrorism
They provide us with food and are pretty to look at, and now they may even save out lives.
For unlikely as it may seem, scientists have developed plants that can detect bombs.
They have taught plant proteins to change colour when in the presence of certain chemicals.
The implications of the study are not hard to see - ringing an airport security gate, for instance, with such plants could prove a lifesaver should a terrorist approach with an explosive and a whole wall of leaves turn white.
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My Comment: Impressive .... very impressive.
Global Warming Will Freeze Britain
Colder, harsher winters similar to last month will become the norm and summers will become cooler and wetter Photo: ALAMYWe are more likely to be skiing in Yorkshire than basking under palm trees, a leading climate change expert has warned as global warming will actually lead to Britain getting colder.
Dr Simon Boxall, of the National Oceanography Survey, said that while the planet as a whole will get much warmer, this country will see temperatures plunge as the ocean currents and weather patterns around the world change.
At the moment north west Europe, particularly Britain, is warmer than it should be because of the effect of the North Atlantic Drift bringing warm water from the Tropics.
This then warms sea breezes which keep temperatures mild on land.
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My Comment: I live in Canada .... give me global warming any day.
Thursday, January 27, 2011
E-Paper Screens Made Of Real Paper
Andrew Steckl's research is featured on the cover of the November issue of ACS Applied Materials & Interfaces. The American Chemical Society (ACS) is the world's largest scientific society. The American Chemical Society (ACS)In December, electrical engineers at the University of Cincinnati reinvented the wheel. By applying electric fields to nonglass materials, they discovered they could make an e-paper display screen using the unlikeliest of materials—paper.
This discovery has big implications for the future of the screen: Making a display out of regular old paper could maximize affordability, decrease environmental impact and also save space, since a paper screen has the potential to roll up and pull out. So is it time to throw out our retro flatscreens and make room for paper television? Not just yet. The future is exciting, but looking at the essential components of a display screen reveals some big roadblocks on the way to shoving a 78-inch screen into your cup holder.
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My Comment: I still prefer old fashion paper.
Super-Tough Robotic Hands Are Now Real (Video)
Good news everyone! German robotics researchers have built a hyper-strong hand that can withstand hammer blows! Come and shake the hand that will someday wring our species' collective neck.
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My Comment: We are getting to that age when robots are just like us .... but stronger (and probably a bit smarter).
Hubble Telescope Detects The Oldest Known Galaxy
From The BBC:
The Hubble Space Telescope has detected what scientists believe may be the oldest galaxy ever observed.
It is thought the galaxy is more than 13 billion years old and existed 480 million years after the Big Bang.
A Nasa team says this was a period when galaxy formation in the early Universe was going into "overdrive".
The image, which has been published in Nature journal, was detected using Hubble's recently installed wide field camera.
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My Comment: The Hubble telescope .... still going strong after all of these years.
Is Your Next Credit Card Your Cell Phone?
From ABC News:
Apple Reportedly Planning Pay-by-Phone Service for Next Gen iPhones, iPads.
Get ready to retire that worn leather wallet. If some of the country's biggest tech companies have their way, all the plastic cards crammed into your billfold will soon find their way into your phone.
Apple is planning to introduce a service that would let consumers use their iPhones and iPads to purchase products, essentially turning a user's cell phone into a credit or debit card, according to a Bloomberg report.
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My Comment: Credit cards, iPhones, Ipads .... what's wrong with paper cash?
Hormone Holds Promise As Memory Enhancer
From Live Science:Could boosting your memory someday be as simple as popping a pill? Scientists found that rats injected with a hormone could remember better, even two weeks after the memory was formed.
The memory-boosting hormone was IGF2, which plays an important role in brain development. The researchers suggest that a better understanding of how this chemical works (IGF2 is short for insulin-like growth factor 2) might lead to drugs that enhance human brain power, particularly in individuals with Alzheimer's and other neurodegenerative diseases.
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My Comment: Faster please .... I am getting older, and my memory is not what it once was.
Report Advocates GM Crops In Food Supply Measures
Top of the crops: Government ministers are keen to embrace GM foods,like this modified soya crop. Photo from The Daily MailFrom The Independent:
Genetically-modified crops are among measures needed to tackle problems with global food supplies that could see prices soar, leading scientists said today.
A new Government-commissioned report warned that there were major failings in the global food system that damages the environment and leaves one billion people hungry.
A further one billion suffer from "hidden hunger" in which nutrients are missing from their diet and the same number are over-consuming, while a third of all food produced is currently wasted.
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My Comment: Lacking any other means to grow more crops .... our options are very limited.
Jupiter Scar Likely From Titanic-Sized Asteroid
These infrared images obtained from NASA's Infrared Telescope Facility in Mauna Kea, Hawaii, show particle debris in Jupiter's atmosphere after an object hurtled into the atmosphere on July 19, 2009. (Credit: NASA/IRTF/JPL-Caltech/University of Oxford)From Science Daily:
ScienceDaily (Jan. 26, 2011) — A hurtling asteroid about the size of the Titanic caused the scar that appeared in Jupiter's atmosphere on July 19, 2009, according to two papers published recently in the journal Icarus.
Data from three infrared telescopes enabled scientists to observe the warm atmospheric temperatures and unique chemical conditions associated with the impact debris. By piecing together signatures of the gases and dark debris produced by the impact shockwaves, an international team of scientists was able to deduce that the object was more likely a rocky asteroid than an icy comet. Among the teams were those led by Glenn Orton, an astronomer at NASA's Jet Propulsion Laboratory, Pasadena, Calif., and Leigh Fletcher, researcher at Oxford University, U.K., who started the work while he was a postdoctoral fellow at JPL.
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My Comment: That is one hell of a big scar.
Google Launches The Holocaust Archive
Google has partnered with Israel’s Yad Vashem museum, to help digitise the largest collection of Holocaust photos and documents in the world, to mark International Holocaust Remembrance Day.
The search giant is working with the Jerusalem-based archive to properly index and store in Google’s cloud 130,000 photographs, some of which are currently available on Yad Vashem’s website, but until now have been difficult to locate and discover online.
Google is also applying the same indexing and optical character recognition (OCR) technology to lots of documents, ranging from visas to survivor testimonials, in order to help people locate more easily online.
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My Comment: Once in a while Google gets involved in a good project .... this is one of them. The Yad Vashem's website is here.
How Memories Are Made
If you want knowledge to stick then it is best to take a nap after absorbing it, claims new research.
Researchers in Germany showed that the brain is better during sleep than during wakefulness at resisting attempts to scramble or corrupt a recent memory.
Their study, published in Nature Neuroscience, provides new insights into the hugely complex process by which we store and retrieve deliberately acquired information – learning, in short.
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My Comment: Sleep ... I love to sleep.
Did Humans Leave Africa Earlier Than Thought
This undated handout photo provided by the journal Science shows the Jebel Faya rockshelter from above, looking north, showing eboulis blocks from roof collapse and the location of excavation trenches. (CBS)New Evidence Suggests Early Humans Exited Africa Much Earlier Than Thought, Entering An Arabian Savannah.
(AP) WASHINGTON - Modern humans may have left Africa thousands of years earlier than previously thought, turning right and heading across the Red Sea into Arabia rather than following the Nile to a northern exit, an international team of researchers says.
Stone tools discovered in the United Arab Emirates indicate the presence of modern humans between 100,000 and 125,000 years ago, the researchers report in Friday's edition of the journal Science.
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Will Video Games Make U.S. Spies Smarter?

Even U.S. intelligence agents make decidedly unintelligent decisions at times. So it may not come as a surprise that the government is willing to invest in any project that could help agencies spot and correct their own decision-skewing prejudices–even if that project is a video game.
Dubbed “Sirius,” the anti-bias project is the brainchild of the Intelligence Advanced Research Projects Activity (IARPA), a government agency whose mission statement might as well have come from a spy novel: to invest in “high-risk/high-payoff research programs that have the potential to provide our nation with an overwhelming intelligence advantage over future adversaries.”
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My Comment: I am skeptical.
The Dirty Secrets In Using Wind Power
A California court tells the naked and ugly truth about a proposed PG&E wind farm, the Manzana Wind Project:
Read more ....We reject the application because we find that the Manzana Wind Project is not cost-competitive and poses unacceptable risks to ratepayers. We find that the proposed cost of the Manzana Wind Project is significantly higher than other resources PG&E can procure to meet its RPS program goal. Moreover, it will subject the ratepayers to unacceptable risks due to potential cost increases resulting from project under-performance, less than forecasted project life, and any delays which might occur concerning transmission upgrades and commercial online date.
My Comment: More evidence on why wind power cannot be relied upon.
Say Hello To 8 Great Unsolved Mysteries

In the year 2000, PM asked how eight of the most profound questions in science might (optimistically) be answered before the dawn of the 22nd century. So where are we now, a decade later? Here's the skinny on some of science's greatest mysteries—from attaining immortality and the search for alien life to traveling through time.
The advances in science made over the past hundred years have been nothing short of astounding: We've split the atom and gone to the moon, spliced open the genome and saved countless lives with medicines. Yet as far as we've come, we have a long way to go. We continue to grapple with realties beyond our understanding, from the inner workings of our bodies to the intrinsic mechanics of the universe.
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My Comment: I am sure these mysteries will be solved one day .... but not today.



