There are a billion people in the world who use less electricity in a year than an average American refrigerator. There is another billion who have no electricity at all. Robert Bryce is a journalist, film-maker, energy analyst. He is the author of six books and the host of the podcast Power Hungry. His latest book, A Question of Power: Electricity and he Wealth of Nations has become the documentary Juice: How Electricity Explains the World. He has documented, first-hand, how the lack of electricity creates poverty, and how women and girls suffer the most from this global inequality.