The most remarkable thing that happened to the world economy after 9/11 was ... nothing. What would have once meant a crippling shock to the system was absorbed astonishingly quickly, partly due to the efforts of the then Chairman of the Federal Reserve Board, Alan Greenspan. The post 9/11 global economy is a new and turbulent system — vastly more flexible, resilient, open, self-directing, and fast-changing than it was even twenty years ago. The Age of Turbulence is an incomparable reckoning with the nature of this new world — how we got here, what we´re living through, and what lies over the horizon, for good or ill, channelled through Greenspan´s own experiences working in the command room of the global economy for longer and with greater effect than any other single living figure.