BBC Radio 4 - More or Less

The great playing field sell off?

How many school playing fields have really been sold off? Presented by Tim Harford.

Is the rapid growth of high frequency trading progress or a threat to the financial system

High-frequency trading, Trumptonomics and more medalling with the Olympics.

How extraordinary was Ye Shiwen's Olympic performance? More or Less looks at the numbers.

Ye Shiwen's statistics, what's happening to homelessness, and TV's murder capital.

Would tighter gun laws lead to fewer gun deaths? Also: how Olympians have changed.

Which countries punch above and below their weight at the Olympics? With Tim Harford.

Can maths prove whether the Tour de France has clamped down on the use of banned drugs?

Can maths prove whether the Tour de France has successfully clamped down on drugs?

How much damage did messing with Libor actually do to the financial system?