What would it take for you to climb an industrial chimney, blockade a coal mine or make a speech to hundreds of people?

The answer for the people in the just released book "Guarding Eden" is climate change.

In tonight's episode Viv brings 4 guests into the studio, the author of Guarding Eden, Deborah Hart  and three of the contributors Julien Vincent (known for the organisation Market Forces, amongst other things), Carol Ride, President of Psychology for a Safe Climate,  and Fiona Armstrong, the founder and convenor of the Climate and Health Alliance.