Now is humanity's best moment. And our most fragile. Global health, wealth and education are booming. Scientific discovery is flourishing. But the same forces that make big gains possible for some of us deliver big losses to others-and tangle us together in ways that make everyone vulnerable.

We've been here before. The first Renaissance, the time of Columbus, Copernicus, Gutenberg and others, redrew all maps of the world, liberated information and shifted Western civilization from the medieval to the early modern era. Such change came at a price: social division, political extremism, economic shocks, pandemics and other unintended consequences of human endeavour.

Now is our second Renaissance. In the face of terrorism, Brexit, refugee crises and the global impact of a Trump presidency, we can flourish-if we heed the urgent lessons of history. Age of Discovery, revised and updated for this paperback edition, shows us how.