More or Less: Behind the Stats - WS MoreOrLess: The future of food

"In the next 40 years, humans will need to produce more food that they did in the previous 10,000," claimed a recent edition of The Economist. Ruth Alexander and Hannah Moore look at whether this is true. With the world's population expected to reach 9 billion by 2050, how confident can we be that everyone will have enough to eat? This programme was first broadcast on the BBC World Service.

More or Less: Behind the Stats - WS MoreOrLess: Black prisoners in the US

Oscar-winner John Legend said that there are more black men "under correctional control" in the United States today than were in slavery in 1850. Is he right? Plus, how many Lego bricks, stacked one on top of the other, would it take to destroy the bottom brick? This programme was first broadcast on the BBC World Service.