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
WS MoreOrLess:100 Year Floods?
Do so-called ‘100 year floods’ only happen once a century? Ruth Alexander and Wesley Stephenson investigate. Also, does the air in Beijing cause as much damage as smoking 40 cigarettes a day?