Lessons unplanned: school shutdowns spread

Schools are closing down as covid-19 measures take hold; we look into the social, economic and educational costs for a world thrust into distance learning and homeschooling. Wild market swings have regulators worldwide wondering whether to shut down stock exchanges altogether. And remembering the backgammon genius known only as Falafel. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/radiooffer