BBC Radio 4's More or Less programme looks at modern slavery
This Friday's episode of BBC Radio 4's More or Less (16:30) will be looking at modern slavery.
More or Less presenter Tim Harford explains - and sometimes debunks - the numbers and statistics used in political debate, the news and everyday life.
Click here for the More or Less page on the BBC website.
Also see: BBC OS Tales of modern-day slavery.
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