1. Why do puddles stop spreading?

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    July 9, 2015 by Bill Johnson


    “You start with something very simple, like the spread of a puddle, but you get at something very fundamental about intermolecular forces,” Ruben Juanes says.
    When you spill a bit of water onto a tabletop, the puddle spreads — and then stops, leaving a well-defined area of water with a sharp boundary.

    There’s just one problem: The formulas scientists use to describe such a fluid flow say that the water should just keep spreading endlessly. Everyone knows that’s not the case — but why?

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  2. What’s Inside Saturn Moon Enceladus? Geyser Timing Gives Hints

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    July 7, 2015 by Bill Johnson


    Eruptions of vapor and ice that stretch for miles above the surface of Saturn’s icy moon Enceladus experience a mysterious delay that could be due to a weak interior, new research suggests.

  3. NISSAN PATHFINDER HYBRID RUNS OUT OF CHARGE

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    July 3, 2015 by Bill Johnson


    2014 Nissan Pathfinder Hybrid
    You’d think with all of the effort required to design, build, and market a new car, the company that makes the final product would treat it like more than an afterthought. But the Nissan Pathfinder Hybrid has never received much attention and now, after just over a year in production, it’s dead.

  4. Galaxy survey to probe why the universe is accelerating

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    June 30, 2015 by Bill Johnson


    Galaxy survey to probe why the universe is acceleratingWe know that our universe is expanding at an accelerating rate, but what causes this growth remains a mystery. The most likely explanation is that a strange force dubbed “dark energy” is driving it. Now a new astronomical instrument, called the Physics of the Accelerating Universe Camera (PAUCam), will look for answers by mapping the universe in an innovative way.

  5. California reveals details of self-driving car accidents

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    June 18, 2015 by Bill Johnson


    FILE - In this Sept. 25, 2012, file photo, California Gov. Jerry Brown, front left, rides in a driverless car to a bill signing at Google headquarters in Mountain View, Calif. California state officials on Thursday, June 18, 2015 released reports detailing six accidents that involved self-driving car prototypes, reversing a policy that had shielded details of how the next-generation technology is performing during testing on public roads. Photo: Eric Risberg, AP / AP“LOS ANGELES (AP) — California state officials released reports Thursday detailing six accidents that involved self-driving car prototypes, reversing a policy that shielded details of how the next-generation technology is performing during testing on public roads.

    The disclosure came after The Associated Press argued to the Department of Motor Vehicles that the agency was improperly withholding the information.

  6. How to encrypt your emails using PGP to keep your secrets safe

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    June 4, 2015 by Bill Johnson


    Encrypt your emails using PGP
    Earlier in June, Facebook announced it would be enabling its users to share their OpenPGP public key on their profile and all notification emails sent by the social network could also be encrypted end-to-end too.

  7. Elderly face NHS discrimination under new UN death targets

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    May 28, 2015 by Bill Johnson


    Elderly people could face discrimination under new UN targets, specialists have warnedThe NHS will be forced to discriminate against the over 70s to meet ‘highly unethical’ UN health targets which seek to reduce premature deaths in younger people, senior medics have warned.