Two years ago, Georgia Tech became the first university in the country to accept Bitcoin. But they stopped this year due to a lack of interest. We break down what Bitcoin really is. Then we speak with Nathaniel Popper, New York Times Wall Street reporter and author of “Digital Gold: Bitcoin and the Inside Story of the Misfits and Millionaires Trying to Reinvent Money,” about the future of Bitcoin and who is leading the charge towards a worldwide currency.