The formula that changed the world

Available for over a year

The Long Rain The numbers behind the drought, the hosepipe ban and how much difference recent rainfall (enough to shrink men's hands into the hands of wrinkled apes) has made. The Midas Formula The story of Black-Scholes, the equation that transformed Wall Street - and the arguments over whether it made the world a better place, or helped cause the financial mess we've all been dealing with for the past five years. Tall Tories Last week we discovered North Koreans really are shorter than their South Korean counterparts thanks to poor nutrition in the North. This week: are Labour MPs shorter than Conservative parliamentarians? Presenter: Tim Harford Producer: Richard Knight.