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>> facebook would. >> facebook would, other social media sites. they sort of say, hey, you go on, you say whatever you want to say. there are some limitations, but they basically allow people to say whatever they want. and that's how they bill themselves. it's about free speech, and you say whatever you want. there is a lot of stuff on there. i've never heard of this before -- >> never heard of it. >> the name was a surprise. i wonder if law enforcement knows about it. if that is something that they monitor on their own. >> so much to it. >> for one person to have the resources to troll throug...

South pole, it was about somewhere between 20 and 50 below zero. that's summer. the point is, it takes a special breed of people. there are nearly 1,000 of them living and working 12-hour shifts at the base, the principal american base down there. it is a really unique, fascin e fascinating subculture of people from every walk of life and background. people who are incrementally exploring, often very remote, incredibly difficult locations, questions like, you know, can we predict the behavior of the sun? where did life come from? what was in the atmosphere thousands of years ago? asking questi...

Online security experts say it is a guarantee hackers will hit the corporate world again and again. deborah feyerick did a fascin e fascinating piece on this. let's watch her piece and come back on the other side. >> reporter: cyber attacks against sony, target, home depot, jpmorgan chase, google, ebay, and every business sector, criminals stealing americans' personal data, credit card numbers, as well as corporate secrets. now imagine if similar cyber attacks made your lights go out or cut off your water supply. imagine if the critical infrastructure we rely on every single day simply shut do...