Disasters are inherently hard to predict. Pandemics, like earthquakes, wildfires, financial crises. and wars, are not normally distributed; there is no cycle of history to help us anticipate the next catastrophe. But when disaster strikes, we ought to be better prepared than the Romans were when Vesuvius erupted, or medieval Italians when the Black Death struck. We have science on our side, after all.

Every generation, a journalist has looked deep into the heart of the nuclear military establishment: the technologies, the safeguards, the plans, and the risks. These investigations are vital to how we understand the world we really live in—where one nuclear missile will beget one in return, and where the choreography of the world’s end requires massive decisions made on seconds’ notice with information that is only as good as the intelligence we have.

The rise to global predominance of Western civilization is the single most important historical phenomenon of the past five hundred years. All over the world, an astonishing proportion of people now work for Western-style companies, study at Western-style universities, vote for Western-style governments, take Western medicines, wear Western clothes, and even work Western hours. Yet six hundred years ago the petty kingdoms of Western Europe seemed unlikely to achieve much more than perpetual internecine warfare. It was Ming China or Ottoman Turkey that had the look of world civilizations.

Once vast swathes of the globe were coloured imperial red, and Britannia ruled not just the waves but the prairies of America, the plains of Asia, the jungles of Africa and the deserts of Arabia. Just how did a small, rainy island in the North Atlantic achieve all this? And why did the empire on which the sun literally never set finally decline and fall? Niall Ferguson's acclaimed Empire brilliantly unfolds the imperial story in all its splendours and its miseries.

Most history is hierarchical: it's about emperors, presidents, prime ministers, and field marshals. It's about states, armies, and corporations. It's about orders from on high. Even history "from below" is often about trade unions and workers' parties. But what if that's simply because hierarchical institutions create the archives that historians rely on? What if we are missing the informal, less well documented social networks that are the true sources of power and drivers of change?