You’ve probably heard of bitcoin - but do you know what that is, and how it works? Cryptocurrencies have emerged as one of the most captivating, yet head-scratching forms of investment in the word. They skyrocket in value. They crash. And, their fans claim, they’ll change the world. As El Salvador becomes the first government to demand everyone accept them as payment, it’s perhaps time we start paying attention. Should we start worrying about them, or should we be buying them? Andy Bell speaks to economist and author, Linda Yueh, to help make sense of it all. How Did We Get Here? Explaining the News is a podcast from 5 News. Join Andy Bell as he explains the world's biggest news stories through interviews with politicians, experts, and analysts. Produced by Silvia Maresca.