In the first of a two-part series, Steve Schifferes from City St George’s, University of London, charts the rise and fall of globalisation, explaining how first Britain and then the US took on the role as the world’s economic top dog. He warns that for all globalisation’s faults, the world is a more unstable place when there is no such dominant power. And in part two, he offers a chilling view of what the world’s financial future could look like, now the American century of global dominance is drawing rapidly to a close.

Until the onset of industrialisation in the 17th and 18th centuries brought artificial light and factory shifts, the idea of getting your eight hours of sleep was unusual. Most people didn’t sleep through the night, instead going to bed with the Sun and waking during the night for a couple of hours of activity. Now, studies suggest this might be one way to deal with insomnia.

Mike Herd

Investigations Editor, Brighton, England

A world map showing the extent of the British Empire in 1886. Norman B. Leventhal Map & Education Center, Boston Public Library/Wikimedia Commons

The rise and fall of globalisation: the battle to be top dog

Steve Schifferes, City St George's, University of London

In each era of globalisation since the mid-17th century, a single country has sought to be the clear world leader – shaping the rules of the global economy for all.

Andrew Mountbatten Windsor

No longer ‘Prince Andrew’: an expert on how royals can be stripped of their titles

Cindy McCreery, University of Sydney

Here’s how it works – and what it might mean for succession.

Hurricane Melissa

4 urgent lessons for Jamaica from Puerto Rico’s troubled hurricane recovery – and how the Jamaican diaspora could help after Melissa

Ivis García, Texas A&M University

Disaster recovery is harder on isolated islands. The Jamaican diaspora living in the U.S., U.K., Canada and elsewhere will be invaluable in the recovery.

The painting that haunts me – seven experts share their favourite scary artwork

Chloe Ward, Queen Mary University of London; Åsa Harvard Maare, Malmö University; Catherine Spooner, Lancaster University; Daisy Dixon, Cardiff University; Frances Fowle, University of Edinburgh; Karl Bell, University of Portsmouth; Pippa Catterall, University of Westminster

From gruesome portraits to creepy critters, these are the paintings that have stayed with our experts long after their first glimpse.