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In farming, monoculture means raising just one crop in an area. America’s economy and stockmarket are coming to resemble a monoculture of a sort: their growth depends largely on enthusiasm for AI. What will happen if the mania subsides? This article gives the worrying answer in graphs and charts.
And President Donald Trump wants to build a defence system to shield America from drones and missiles. Naturally, he calls it the Golden Dome. The idea is not as outlandish as it sounds—missile threats are multiplying—but it remains unclear what, specifically, the Golden Dome is supposed to do. | 
