In Hubei province and increasingly across China, new-year celebrations are muted. Authorities are trying to contain the outbreak with an unprecedented lockdown. Homelessness is rising in the rich world, with Finland as a notable exception; we examine the merits of the country’s “housing first” policy. And how to identify someone by reading their heartbeat at 200 paces. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/radiooffer