Use BBC.com or the new BBC App to listen to BBC podcasts, Radio 4 and the World Service outside the UK.

Find out how to listen to other BBC stations

Episode details

Radio 4,14 Nov 2007,30 mins

Available for over a year

Jonathon Porritt explores our agricultural biodiversity. 2/2: He examines the controversial fallout of the Green Revolution and the inherent danger of single variety crops.

Programme Website
More episodes