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Canadian researchers have found the first evidence that older brains get more benefit than younger brains from learning information the hard way - via trial-and-error learning

Do you know what the numbers 5683 and 3327 mean? According to a recent study, if you are a person who frequently sends text messages, your brain knows what these numbers mean and is unconsciously influencing how you feel about phone numbers you dial.

The constant stream of information we get through mobile and hand-held devices is changing the way we think. Matt Richtel, a technology writer for The New York Times, explains how the use of digital technology is altering our brains -- and how retreating

Chance favors the connected mind. That is what author Steven B. Johnson says to those looking for the next big idea. Johnson is the author of "Where Ideas Come From" a book that looks at the macro trends on how innovation evolves. Ideas are rarely created through a "eureka" moment. It may seem like Doc Brown fell off his toilet and invented the flux capacitor, but really the idea for time travel and how to do it were converging in his brain for quite some time before the blow to head. Instead of an "aha!" moment, Johnson believes that ideas are born of a "slow hunch" that are made possible through periods of technological innovation and evolution. If you are creating a startup, where do you get your ideas from?

Feedback loops are how we learn, whether we call it trial and error or course correction. In so many areas of life, we succeed when we have some sense of where we stand and some evaluation of our progress. Indeed, we tend to crave this sort of information; it's something we viscerally want to know, good or bad. As Stanford's Bandura put it, "People are proactive, aspiring organisms." Feedback taps into those aspirations. But maybe requiring people to do a little work-to stick accelerometers around their house or plug a device into a wall socket-is just enough of a nudge to get our brains engaged in the prospect for change.

The world is a dazzling array of people, objects, sounds, smells and events: far too much for us to fully experience at any moment. So our attention may automatically be snagged by something startling, such as a slamming door, or we may deliberately focus on something that is important to us right then, such as locating our child among the happily screaming hordes on the school playground. We also know that people are hard-wired to seek out and pay attention to things that are rewarding, such as food when we are hungry, or water when we are thirsty

The king of Web corporations has been Google with its dominance of search. Recently, Facebook has become the second-most popular website. How do the purposes of each of these successful sites differ, and where do they compete?