eldavojohn writes "A new reactor developed by CalTech shows promise for producing renewable fuel from sunlight. The reactor hinges on a metal oxide named Ceria that has very interesting properties at very high temperatures. It exhales oxygen at very high temperatures and inhales oxygen at very low temperatures. From the article, 'Specifically, the inhaled oxygen is stripped off of carbon dioxide (CO2) and/or water (H2O) gas molecules that are pumped into the reactor, producing carbon monoxide (CO) and/or hydrogen gas (H2). H2 can be used to fuel hydrogen fuel cells; CO, combined with H2, can be used to create synthetic gas, or "syngas," which is the precursor to liquid hydrocarbon fuels. Adding other catalysts to the gas mixture, meanwhile, produces methane. And once the ceria is oxygenated to full capacity, it can be heated back up again, and the cycle can begin anew.' The only other piece of the puzzle is a large sunlight concentrator to raise the temperature to the necessary 3,000 degrees Fahrenheit. The team is working on modifying and refining the reactor to require a lower temperature to achieve the two-step thermochemical cycle. Another issue is the heat loss which the team claims could be reduced to improve efficiency to 15% or higher. Since CO2 is an input, the possibility exists for coal and power plants to collect CO2 emissions to be used in this process which would effectively allow us to "use the carbon twice." Another idea listed is that a "zero CO2 emissions" is developed along these lines: 'H2O and CO2 would be converted to methane, would fuel electricity-producing power plants that generate more CO2 and H2O, to keep the process going.' The team's work was published last month in Science."

Orome1 writes "In the last couple of decades, we have become so accustomed to the idea that the public portion of our everyday life is watched and recorded — in stores, on the street, in institutions — that we often don't even notice the cameras anymore. Analog surveillance systems were difficult to hack into by people who lacked the adequate knowledge, but IP cameras — having their own IPs — can be quite easily physically located and their stream watched in real-time by anyone who has a modicum of computer knowledge and knows what to search for on Google."

New research suggests that the clear screens and easily read fonts of e-readers makes your brain "lazy." According to Neuroscience blogger Jonah Lehrer, using electronic books like the Kindle and Sony Reader makes you less likely to remember what you have read because the devices are so easy on the eyes. From the article: "Rather than making things clearer, e-readers and computers prevent us from absorbing information because their crisp screens and fonts tell our subconscious that the words they convey are not important, it is claimed. In contrast, handwriting and fonts that are more challenging to read signal to the brain that the content of the message is important and worth remembering, experts say."

snydeq writes "German white-hat hacker Thomas Roth claims he can crack WPA-PSK-protected networks in six minutes using Amazon EC2 compute power — an attack that would cost him $1.68. The key? Amazon's new cluster GPU instances. 'GPUs are (depending on the algorithm and the implementation) some hundred times faster compared to standard quad-core CPUs when it comes to brute forcing SHA-1 and MD,' Roth explained. GPU-assisted servers were previously available only in supercomputers and not to the public at large, according to Roth; that's changed with EC2. Among the questions Roth's research raises is, what role should Amazon and other public-cloud service providers play in preventing customers from using their services to commit crimes?"

kkleiner writes "Move over Ben Franklin, we finally have a replacement for bifocals. Virginia-based Pixel Optics has developed a composite lens that can change the range of focus electronically. The emPower! glasses were created in cooperation with Panasonic Healthcare, and allow you to switch between long distance and short distance vision in a split second. Rather than having a lens divided into two sections, emPower! uses an LCD overlay that can change the focal length of the glasses via electric current. When the LCD layer is off, your lenses are good for intermediate/long distances. Turn the LCD layer on, and a section of the lens is suddenly magnifying close-up images – perfect for reading."

arcticstoat writes "PC gamers who are sick of being constantly distracted by whirring fans could now have a helping hand from a new wireless graphics card. Galaxy sub-brand KFA2 has announced a graphics card with no display outputs. Instead, the KFA2 GTX 460 WHDI uses a wireless link to send the display output from your PC to your screen, whether that's a conventional monitor or the HD TV in your lounge. You just need to attach the bundled receiver to the back of your chosen screen and you're done. With a wireless keyboard and mouse, you could place your PC at the other end of the room, letting you crank up those fans without having to listen to the whirring next to you."

An anonymous reader writes "There is an amazing series of charts that visualizes trigrams and bigrams, portions of sentences that have been extracted from Google's web data set. The graphs highlight word associations and the frequency with which we use them on web pages. Chris Harrison from Carnegie Mellon University found, for example, that the word 'he' is often tied to 'argues,' while 'she' is found often with 'loves.' There are also word-relation charts that highlight words used in combination with their opposites, such as good and bad, peace and war, and PC and Mac." There are a lot of these things, and they're really interesting to browse through.

eldavojohn writes "A Japanese/Algerian effort called The Sahara Solar Breeder Project employs a simple concept revolving around the pure silica in the sand of the Sahara Desert. The silica can be used to build vast solar arrays which will then provide the power and means to build more solar arrays in a classic breeder model. They would then use DC powerlines utilizing high temperature superconductors. The lead of the project points out that silica is the second most abundant resource in the Earth's crust. The project's lofty goals to harness the Sahara's energy has a few requirements — including 100 million yen annually — but also the worldwide cooperation of many nations and the training of the scientists and engineers to create and man these desert plants. The once deadly wasteland of the Sahara now looks like a land rich in an important resource: sunlight."

storagedude writes "There seems to be no end to the ways your personal data and online behavior can be used against you. According to the Wall Street Journal, insurance companies are considering using online behavioral and social networking data to try to weed out insurance risks. What you read, what you buy, how much TV you watch, your credit, your fan pages... it could all be used to predict your longevity and insurance risk. The practice, which appears to be in the early stages, could raise concerns with the FTC and insurance regulators, but insurance and data mining companies say they just plan to use it to speed up the applications of people who appear to be good risks; others would have to go through more rigorous traditional screening."