Enlarge / Tesla is starting pre-orders on smooth and textured black glass solar roofs. (credit: Tesla) Tesla CEO Elon Musk announced on Twitter on Wednesday that the company’s solar roof panels would be available for pre-order that afternoon. In a press conference Wednesday afternoon, Tesla and SolarCity executives said the roof would be cheaper, on the whole, than installing a regular tile roof (although not cheaper than an asphalt roof). Pre-orders require a $1,000 payment to secure a place on the list. Tesla also rolled out a calculator on its website using data from Google Sunroof , a 2015 project from the search giant that used 3D modeling to map out every house’s potential for solar panel output. Tesla’s calculator factors in the cost of a 14kWh Powerwall, although purchase of a Powerwall is not required to get a solar roof, as well as any tax incentives that a customer might receive in their state. The “energy value” number featured most prominently is calculated over 30 years, which is the length of the warranty covering power production from the tiles. (Tesla is offering an “infinity warranty” on the tiles themselves.) Tesla Read 8 remaining paragraphs | Comments
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Tesla starts pre-orders on solar roof for $1,000, rolls out calculator for costs
An anonymous reader writes: The audio driver installed on some HP laptops includes a feature that could best be described as a keylogger, which records all the user’s keystrokes and saves the information to a local file, accessible to anyone or any third-party software or malware that knows where to look. Swiss cyber-security firm modzero discovered the keylogger on April 28 and made its findings public today. According to researchers, the keylogger feature was discovered in the Conexant HD Audio Driver Package version 1.0.0.46 and earlier. This is an audio driver that is preinstalled on HP laptops. One of the files of this audio driver is MicTray64.exe (C:windowssystem32mictray64.exe). This file is registered to start via a Scheduled Task every time the user logs into his computer. According to modzero researchers, the file “monitors all keystrokes made by the user to capture and react to functions such as microphone mute/unmute keys/hotkeys.” Read more of this story at Slashdot. 
Conventional wisdom: If you eat a lot of salt, you will get thirsty to dilute the sodium level in your blood. The excess salt will be excreted in your urine. But a new study of Russian cosmonauts is challenging this long-held belief. When the cosmonauts ate more salt, the became less thirsty. And their appetite increased – they had to eat 25 percent more to maintain their weight. From the New York Times : The crew members were increasing production of glucocorticoid hormones, which influence both metabolism and immune function. To get further insight, [Dr. Jens Titze, now a kidney specialist at Vanderbilt University Medical Center and the Interdisciplinary Center for Clinical Research in Erlangen, Germany] began a study of mice in the laboratory. Sure enough, the more salt he added to the animals’ diet, the less water they drank. And he saw why. The animals were getting water — but not by drinking it. The increased levels of glucocorticoid hormones broke down fat and muscle in their own bodies. This freed up water for the body to use. But that process requires energy, Dr. Titze also found, which is why the mice ate 25 percent more food on a high-salt diet. The hormones also may be a cause of the strange long-term fluctuations in urine volume. Scientists knew that a starving body will burn its own fat and muscle for sustenance. But the realization that something similar happens on a salty diet has come as a revelation. https://youtu.be/aJEzl31zL-I