Climate Change and Winter Dynamics: Understanding the Arctic Oscillation

To keep track of the spread of covid-19, some governments are turning to digital surveillance, using mobile-phone apps and data networks. We ask whether this will work—and examine the threat to privacy posed by a digital panopticon. Britain’s Labour Party has a new leader. We ask in which direction Sir Keir Starmer will lead the opposition. And we report on the northern hemisphere’s winter that wasn’t. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/radiooffer

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