Why Indonesia can’t stop the haze?

Haze wafting across borders in South East Asia is an annual problem, so why can’t the countries responsible stop farmers from the slash-and-burn method that causes it?

Indonesia’s President Prabowo Subianto has pledged to revoke permits for companies that order land clearing, but that’s done little to stop the haze. Asia Specific podcast host Mariko Oi speaks to BBC World Service journalist Astudestra Ajengrastri and Joel Aik, a public health specialist from NUS-Duke Medical School in Singapore.