The Tokyo Olympics are due to begin in just over two months. But with coronavirus cases climbing in recent months, 80% of Japanese people want the games to be cancelled. The navigation signals sent by satellites like America’s GPS constellation are surprisingly weak. What happens when they’re jammed—or tricked? And in America cicadas have emerged from their underground redoubts for the first time in 17 years, for a frenzied few weeks of mating. How do you study a species that emerges fewer than six times in a century? For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer Hosted on Acast. See acast.com/privacy for more information.
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