Enlarge / LONG ISLAND SOLAR FARM (credit: Brookhaven National Lab ) In the year 2000, the entire world had roughly four Gigawatts of solar power capacity installed, and it didn’t seem to be going anywhere fast. In 2002, the International Energy Agency forecast suggested that, by 2020, global solar capacity would still be hovering at around 10GW, and still barely register on the global energy markets. How things change. Over the 15 years that followed, solar energy capacity expanded by 5,700 percent, reaching 227GW. The International Energy Agency revised its solar estimates upwards three times over that span, but its most recent estimate—over 400GW of installed capacity by 2020—is already falling behind the curve of solar’s growth. In 2015, the most recent year that numbers are available, 57GW worth of solar panels were shipped. That’s enough to add 400GW of new capacity in seven years, under the completely unrealistic assumption that our manufacturing capacity won’t expand in the mean time. If most projections have been wrong, is there anything we can say about the future? An international team of energy experts makes an attempt to figure out where solar might be going out to the 2030s, when they expect we’ll have Terawatts worth of photovoltaics on our grids. Read 12 remaining paragraphs | Comments
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Solar energy has plunged in price—where does it go from here?
From an article on FastCompany: Intel hasn’t lost its zeal for big leaps in computing, even as it changes the way it introduces new chips, and branches beyond the PC processor into other areas like computer vision and the internet of things. “Number one, too many people have been writing about the end of Moore’s law, and we have to correct that misimpression, ” Mark Bohr, Intel’s technology and manufacturing group senior fellow and director of process architecture and integration, says in an interview. “And number two, Intel has developed some pretty compelling technologies … that not only prove that Moore’s law is still alive, but that it’s going to continue to provide the best benefits of density, cost performance, and power.” But while Moore’s law soldiers on, it’s no longer associated with the types of performance gains Intel was making 10 to 20 years ago. The practical benefits of Moore’s law are not what they used to be. For each new generation of microprocessor, Intel used to adhere to a two-step cycle, called the “tick-tock.” The “tick” is where Moore’s law takes effect, using a new manufacturing process to shrink the size of each transistor and pack more of them onto a chip. The subsequent “tock” introduces a new microarchitecture, which yields further performance improvements by optimizing how the chip carries out instructions. Intel would typically go through this cycle once every two years. But in recent years, shrinking the size of transistors has become more challenging, and in 2016, Intel made a major change. The latest 14 nm process added a third “optimization” step after the architectural change, with modest performance improvements and new features such as 4K HDR video support. And in January, Intel said it would add a fourth optimization step, stretching the cycle out even further. The move to a 10 nm process won’t happen until the second half of 2017, three years after the last “tick, ” and Intel expects the new four-step process to repeat itself. This “hyper scaling” allows computing power to continue to increase while needing fewer changes in the manufacturing process. If you divide the number of transistors in Intel’s current tick by the surface area of two common logic cells, the rate of improvement still equals out to more than double every two years, keeping Moore’s law on track. “Yes, they’ve taken longer, but we’ve taken bigger steps, ” Bohr said during his three-hour presentation. Read more of this story at Slashdot. 
“A backdoor has been found in devices made by a Chinese tech firm specializing in VoIP products, ” reports TechRadar. An anonymous reader quotes their article: Security outfit Trustwave made the discovery of a hidden backdoor in DblTek’s devices which was apparently put there to allow the manufacturer access to said hardware — but of course, it’s also open to being exploited by other malicious parties. The backdoor is in the Telnet admin interface of DblTek-branded devices, and potentially allows an attacker to remotely open a shell with root privileges on the target device. What’s perhaps even more worrying is that when Trustwave contacted DblTek regarding the backdoor last autumn — multiple times — patched firmware was eventually released at the end of December. However, rather than removing the flaw, the vendor simply made it more difficult to access and exploit. And further correspondence with the Chinese company has apparently fallen on deaf ears. The firmware with the hole “is present on almost every GSM-to-VoIP device which DblTek makes, ” and Trustwave “found hundreds of these devices on the net, and many other brands which use the same firmware, so are equally open to exploit.” Read more of this story at Slashdot. 
An anonymous reader quotes a report from Quartz: Nearly 1% of carbon emissions annually can be attributed to paper production, even though we recycle much of the paper we produce. Yadong Yin has a solution. He and his colleagues at the University of California at Riverside have invented a type of paper that can be printed on using just light, erased by heating, and reused up to 80 times. Yin created nanoparticles, which are a million times smaller than the thickness of human hair, with the dye Prussian blue, or its chemical analogues, and titanium oxide, which is commonly used in white wall paint. This mixture is then applied to normal paper. When the coating is exposed to ultraviolet light, electrons from titanium oxide move to the dye in the nanoparticle. This addition of electrons makes the blue dye turn white. Focusing the ultraviolet light into shapes, you can print white words on a blue background — or blue words on a white background, which are easier to read. If left alone, the paper reverts to its original state in five days. That process can be accelerated by heating the paper to 120 C (250 F) for 10 minutes. Read more of this story at Slashdot. 
An anonymous reader quotes some harsh allegations from Myce.com: Thousands of HP printers around the world started to show error messages on the same day, the 13th of September… HP printers with non-HP cartridges started to show the error message, “One or more cartridges appear to be damaged. Remove them and replace them with new cartridges”… When [Dutch online retailer 123ink] emailed their customers asking them if they wanted to check if their printer also had issues, they received replies from more than 1, 000 customers confirming the issue… Consumers who complained to HP were told the error was caused by using non-HP cartridges. A day later HP withdrew that statement and explained the issues were a side effect of a firmware update, [but] printers without any internet access started to reject non-HP cartridges. Therefore it’s very unlikely that a firmware update caused the issues and the only other logical explanation is that HP programmed a date in its firmware on which non-HP cartridges would no longer be accepted. “Printer worked fine for nine months, ” complains one of many angry users on HP’s web site. “Then on 9/13 HP uploaded without my permission a firmware update that caused a message ‘damaged cartridge’ for all my cartridges and then it refused to print.” Read more of this story at Slashdot. 
szczys writes: Carbon Nanotubes and Graphene breakthroughs pop up in the news often enough for them to be considered buzzwords. Most of the time it’s the superconducting properties of graphene that are touted, but molecule-scale structures also hold the promise of building mechanical computing devices that are unimaginably small. The reason we don’t have these things yet comes down to the manufacturing process. Building machines out of carbon molecules is commonly called Rod Logic — a topic many know from the seminal novel The Diamond Age. Al Williams discusses how Rod Logic works and highlights some of the places we’re already seeing these materials like to help cool LED light bulbs, and to strengthen composites. Read more of this story at Slashdot. 
New submitter bartvbl writes: As part of the GPL license, D-Link makes its firmware source code available for many of its devices. When looking through the files I accidentally stumbled upon 4 different private keys used for code signing. Only one — the one belonging to D-Link itself — was still valid at the time. I have successfully used this key to sign an executable as D-Link. A Dutch news site published the full story (translated to english with Google Translate). Read more of this story at Slashdot.