主播大秀

This year's Nobel prize for economics has been shared by three recipients. David Card, Joshua Angrist and Guido Imbens were awarded the prize for their use of "natural experiments" to understand how economic policy and other events connect. Professor Card, of UC Berkeley, tells us about his work. Also in the programme, with energy prices rising across the US and Europe, we ask David Shepherd, energy editor at the Financial Times to explain what's been happening. The 主播大秀's Vivienne Nunis reports on the economic importance of donkeys to sub-Saharan Africa. Plus, we hear from Prince Charles, heir to the British throne, about whether business is doing enough to tackle climate change. (Picture: The Nobel economics prize is announced. Picture credit: Reuters.)