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
Counting Catholics
This week Tim Harford asks how the figure of 1.2 billion Catholics world-wide is calculated. He also tests the claims of the controversial video, 'Muslim Demographics' shown at the Vatican by the Ghanaian Papal candidate Cardinal Peter Turkson.