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Thursday, January 28th, 2016

    Time Event
    2:42p
    Why the Calorie Is Broken
    New submitter ami.one writes: Cynthia Graber and Nicola Twilley explain how we are still using a century old method for measuring the calories in our food and the calories spent in different human activities. Essentially, there is a very big difference between burning stuff in a bomb calorie-meter and the extremely complex ways our body extracts energy from food. In fact, the exact process of digestion is yet to be understood sufficiently at a micro level, and years from being replicated to any close degree. Plus, the way our bodies spend calories for a given activity is hugely different from the way a car consumer gasoline and dependent on a number of parameters — some of which are not even known currently. Therefore, balancing calories in to Calories out is not so stupidly simple as it seems to the underweight layperson . Update: 01/28 22:09 GMT by T : Sorry for the duplicate post; it was a long night.

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    6:49p
    Tesla Truck 'Quite Likely,' Says Elon Musk
    An anonymous reader writes with this excerpt from Boy Genius Report: If you think Tesla's plan for world domination begins with the Model S and ends with the Model 3, you're sorely mistaken. While the Model 3 is of course the mass consumer vehicle Elon Musk is betting the company on, the Tesla CEO is certainly open to developing other types of vehicles in the future. During a recent interview in Hong Kong at the StartmeupHK Festival, Musk briefly touched on the potential for Tesla to build an electric truck. "I think it is quite likely we will do a truck in the future," Musk said. "I think it's sort of a logical thing for us to do in the future." While this might appear to be outside of Tesla's wheelhouse at first glance – the Model S is a luxury sedan, after all – the amount of money to be made in trucks is immense. To wit, the three best-selling vehicles in the U.S. in both 2014 and 2015 were all pickup trucks.

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    7:10p
    Ask Slashdot: Learning Robotics Without Hardware?
    An anonymous reader writes: I live in a Third World country with a more or less open Internet access. I'm thinking of learning robotics. I can access Github and other free software repositories, and I can read or watch online tutorials in English. My only problem is that we don't really have the money to buy robotics hardware. We can afford an Arduino or Raspberry Pi board but not the mechanical attachments. So is there any chance for me to learn robotics even if I don't have the hardware? Is it possible to program a robot using pure software simulation?

    Read more of this story at Slashdot.










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    9:39p
    Satellite Failure Behind GPS Timing Anomaly
    Bismillah writes: The recent 13-microsecond timing anomaly was caused by a satellite failure triggering a "software issue", the USAF 50th Space Wing has confirmed. Such an error is large enough to cause navigation errors of up to 4 km. Luckily, no issues with GPS guided munition were reported. Reader donaggie03 adds a link to the official explanation from Rick Hamilton, Executive Secretariat of the Civil Global Positioning System Service Interface Committee. From Hamilton's email: Further investigation revealed an issue in the Global Positioning System ground software which only affected the time on legacy L-band signals. This change occurred when the oldest vehicle, SVN 23, was removed from the constellation. While the core navigation systems were working normally, the coordinated universal time timing signal was off by 13 microseconds which exceeded the design specifications. The issue was resolved at 6:10 a.m. MST, however global users may have experienced GPS timing issues for several hours.

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