Monty Don presents Shared Planet, the series that looks at the crunch point between human population and the natural world.
In this week's programme we report from India where John Aitchison revels in the sight of two tigers, who magnificent though they are, are now in effect in an island population, separated from the farmland that surrounds the National Park by an electric fence.
Lion biologist Craig Packer from the University of Minnesota will be speaking to Monty about his observations in Tanzania where upward of 100 people a year are being killed by lions raiding villages, the lions allegedly being driven to switch their prey to people by lack of their preferred prey outside the national parks.
David MacDonald, Professor of Wildlife Conservation at Oxford University, will be exploring this area of conflict with Monty in the Shared Planet studio.
Listen to Shared Planet
You can listen to this episode of Shared Planet on BBC Radio 4 at 11:00am on Tuesday 16 July 2013. More information and a link to listen again can be found on the Radio 4 website.