In the mid-1600s, France developed the first overarching theory of how the global economy could work in its favour. All-powerful finance minister Jean-Baptiste Colbert pioneered its protectionist policies, tripling French import tariffs to make foreign goods prohibitively expensive. Sound familiar? Nearly four centuries later, many aspects of this model of “mercantilism” have been revived by Donald Trump’s tariffs of mass disruption.

In the first of an epic 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. Critically, 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 will offer 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.

And if you’ll be watching the next instalment of Celebrity Traitors tonight, keep an eye out for telltale clues from the “villains”. Research suggests that people tend to sweat when they are lying or under excessive pressure.