Mike chats to Annie Leonard about stuff, learns how to live cashless, and talks currencies
BBC World Service
Amir Amirani looks at how the Persian passion for poetry has shaped Iranian identity.
1/2 Dr Mark Lythgoe tells the untold story of medical imaging.
Why Sun Tzu's words of wisdom - written over 2,500 years ago - are still relevant today
Is Britain's drive to curb bribery and corruption working? Allan Urry investigates.
BBC Radio 4
8/40 Following the work of seabird ecologists on the Isle of May.
3/3 Michael Portillo examines the past and future of democracy over 2,500 years.
1/2 Philip Dodd investigates China's soft power charm offensive.
Mike chats to the UN's new climate chief, meets Daryl Hannah and spots pigs in the sky.
What it means to be a Christian missionary in a hostile country.