Tony Juniper, Emily Shuckburgh, Dieter Helm and Kapka Kassabova join Rana Mitter in the BBC tent at the Hay Festival to look at the environmental movement past and present. Show more
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Tony Juniper, Emily Shuckburgh, Dieter Helm and Kapka Kassabova join Rana Mitter in the BBC tent at the Hay Festival to look at the environmental movement past and present. Show more