Chris Hadfield: What I learned from going blind in space

What are you revealing online? Much more than you think What can be guessed about you from your online behavior? Two computer privacy experts — economist Alessandro Acquisti and computer scientist Jennifer Golbeck — on how little we know about how much others know. The best indicator of high intelligence on Facebook is apparently liking a page for curly fries. At least, that’s according to computer scientist Jennifer Golbeck (TED Talk: The curly fry conundrum), whose job is to figure out what we reveal about ourselves through what we say — and don’t say — online. Of course, the lines between online and “real” are increasingly blurred, but as Golbeck and privacy economist Alessandro Acquisti (TED Talk: Why privacy matters) both agree, that’s no reason to stop paying attention. I hear so much conflicting information about what I should and shouldn’t be posting online. Alessandro Acquisti: My personal view is that individual responsibility is important, but we are at a stage where it is not sufficient. Jennifer Golbeck: I agree with that.

Charming talks for a boost on a bad day | Playlist Now playing All under the age of 16, brothers Jonny, Robbie and Tommy Mizzone are from New Jersey, a US state that's better known for the rock of Bruce Springsteen than the bluegrass of Earl Scruggs. Nonetheless, the siblings began performing bluegrass covers, as well as their own compositions, at a young age. Here, they play three dazzling songs in three different keys, passing the lead back and forth from fiddle to banjo to guitar.