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ckwu writes
"The vast real estate of windows in office buildings and skyscrapers could be a fruitful field for harvesting solar energy—if lightweight solar cells could be made with a high enough conversion efficiency and appealing aesthetics. Now researchers at Oxford University report semitransparent solar cells that might do the trick. The team made solar cells using a perovskite, a class of mineral-like materials that have properties similar to inorganic semiconductors and show sunlight-to-electricity conversion efficiencies of more than 15%. The team deposited a thin film of perovskite onto glass so that the material formed tiny crystalline islands. The islands absorb photons and convert them to electrons, while light striking the empty areas passes through. The result was a semitransparent solar cell with a grayish tint."
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cartechboy writes
"It looks like Elon Musk and Tesla Motors find themselves in another PR war over the cause of a fire involving a Tesla Model S. Authorities in Irvine, CA are currently investigating the reason for a fire in a garage that, yes, contained a Tesla Model S. While the actual cause of the fire remains unknown, Tesla Motors and the Orange County Fire Authority are already publicly disputing possible causes, thought to center around the Tesla charging system. Tesla says the fire was not caused by any part of the car nor its charging system, reports Reuters. For what its worth — we've seen a version of this movie before. In 2011, investigators determined that a garage fire that destroyed a Chevrolet Volt had started away from the car, later spreading to engulf and destroy the car."
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An anonymous reader writes
"The Free Software Foundation announced today the first laptop they have been able to certify as-is that respects the user's freedoms. The laptop is free down to using Coreboot in place of a proprietary BIOS. The OS shipped on the laptop is Trisquel, the Ubuntu derived Linux OS that removes all traces of proprietary firmware, patented formats, etc. The only issue though for new customers is this endorsed laptop comes down to being a refurbished 2006 ThinkPad X60 with single or dual-core Intel CPU, 1GB+ of RAM, 60GB+ HDD, and a 1024x768 12.1-inch screen, while costing $320+ USD (200 GBP). The FSF-certified refurbished laptops are only offered for sale through the Gluglug UK shop. Are these outdated specs worth your privacy and freedom?"
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waderoush writes
"One of the problems that kept PR2, a two-armed humanoid robot developed by Menlo Park, CA-based Willow Garage, from succeeding commercially was its $400,000 price tag. But as it turned out, only a handful of the 40 or so universities that own PR2s ever developed applications that use both arms. That's one of the reasons why UBR-1, a mobile manipulator robot from Willow Garage spinoff Unbounded Robotics, has only one arm. And that, along with many other engineering decisions and technology improvements, will allow the startup to sell its robot for just $35,000 (it's designed for materials-handling tasks in places like warehouses, elder care facilities, and supermarkets). 'With robots, feature creep is so much more present than in some other fields,' says Unbounded co-founder and CEO Melonee Wise. 'There is always this desire to make a Swiss Army knife. But you have to make compromises, and those compromises directly impact the capabilities as well as the cost of the robot.' One roboticist told Unbounded: 'Your robot is so inexpensive that if I needed to have a second arm, I'd just buy a second robot.'"
