Today’s legislative elections in South Korea are the world’s first to take place amid the covid-19 crisis. How have masked campaigners managed, and how are masked voters likely to respond? “Contact tracing” is crucial in following the coronavirus’s progression; we look into nascent technological approaches to the task. And a look at whether the pandemic will give way to a baby boom.For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/radiooffer For information regarding your data privacy, visit acast.com/privacy