2. Were you late to work yesterday because you couldn't remember where you put your car keys? Did you completely forget about a coffee date last week with a friend and only remember when you got a text asking, "where are you?" Can you no longer remember the name of your favorite elementary school teacher? Memory problems impact just about everyone to a certain degree, but science suggests you might be able to improve your memory, as well as reduce the likelihood of Alzheimer's and dementia, by engaging in certain activities, eating specific foods, and using certain mnemonic devices.
3. Regardless of whether or not you think Snapchat is worth the $3 billion Facebook offered it, one thing is clear: There's an appetite out there for so-called ephemeral networks, where content literally vanishes seconds after being received. And, contrary to popular perception, this isn't just about sexting and X-rated selfies (though it definitely is about that, too). As content on the major networks becomes more corporate and commoditized, Snapchat and services like it restore some of the fun and spontaneity to social media. Just like a real-life interaction -- where ideas flow freely and you generally don't worry about everything being recorded for posterity and broadcast to the world -- SnapChat and networks like it offer a channel for genuine, unfiltered exchange. And the kids really like it. While Facebook's own CFO officially acknowledged last month that teen use of his network is declining, the number of teens on SnapChat -- at least anecdotally -- is exploding.
西西软件园 Not until recently anyway. But scientists at Weill Cornell Medical College have at last managed to—at least with mice and monkeys. This produced artificial retinas, whose chips convert images into electronic signals and whose tiny projectors convert electronic signals into light.
"Based on experience from previous years, the number of applicants could sharply increase as the application window closes, especially during the last three days of application," an unidentified official with the Ministry of Human Resource and Social Security said on the ministry's website.