For almost 80 years, the world has refrained from using or, for the most part, even seriously pondering the use of nuclear weapons. Russia’s invasion of Ukraine has eroded that taboo. Avian flu is spreading around the world, threatening birds’ health and contributing to rising egg and poultry prices. And Sun Ra’s huge, weird and wonderful Arkestra is back on the road. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer
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