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Now Playing: 08-29-13 Marketplace Tech - Twitter tries for revenue

The idea of controlling objects, even other humans, with only your brain is a holy grail of tech innovation. And what researchers did at the University of Washington this month sounds pretty amazing. Using non-invasive technology to record and stimulate brain function, a researcher at one end of campus controlled the physical actions of someone at the other end of campus. And, Twitter makes another move at revenue.