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 there is a report from Northern Kenya about the Grevy's Zebra, the world's stripiest Zebra and a species in decline for many different reasons, all of which appear to be attributed to human activity.
Monty Don examines the wider issues of species abundance and people, and interviews one of the authors of a recent paper, "Can a Collapse of Civilisation be Avoided", Professor Paul Ehrlich from Stanford University.
Also in the programme Dr Joe Smith from The Open University, an expert in environment and the media, exploring how the media should keep up with such apocalyptic headlines.
Listen to Shared Planet
You can listen to this episode of Shared Planet on BBC Radio 4 at 11:00am on Tuesday 25 June 2013. More information and a link to listen again can be found on the Radio 4 website.