Tim Harford and the More or Less team try to make sense of the statistics which surround us. From BBC Radio 4
http://www.bbc.co.uk/programmes/p02nrss1
Should you wear a face mask?
Do face masks stop you getting coronavirus? You might instinctively think that covering your mouth and nose with cloth must offer protection from Covid-19. And some health authorities around the world say people should make their own masks. But expert opinion is divided. Tim Harford and Ruth Alexander unpick the arguments.