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: How Many Stormtroopers are there?
Are Star Wars’ Stormtroopers the biggest secret army on Earth? Ruth Alexander investigates, and looks at some of the other numbers behind one of the most successful movie franchises in history.