Weekly podcast: Diageo’s return from social and environmental investment

This week: Harriet Howey from Diageo talks to Ian Welsh about how the business tracks the impacts of its social and environmental programmes and the return on investment the company achieves. And another chance to hear Toby Webb and Imperial College’s Joss Lyons-White discuss the commitment gaps developing in the palm oil sector. Plus, detail from the latest Global Slavery Index, cities grasping the climate change nettle, deforestation rates in Brazil and the food waste challenge, in the news roundup.

Hosted by Ian Welsh