Tomorrow night is the premier of PBS's three-part, one-night event Niall Ferguson's Networld, which was inspired by historian Niall Ferguson's bestselling book The Square and the Tower: Networks and Power, from the Freemasons to Facebook (Penguin Books). PBS says: "From the Reformation and 17th century witch-hunting, through the American Revolution and to the nightmare visions of Orwell's 1984, Ferguson explores the intersection of social media, technology and the spread of cultural movements."

