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Marcus Brigstocke talks to Andrew Simms

Changing the System: Crossing Planetary Boundaries

Hay Festival 2014 , 

The comedian and broadcaster, who has witnessed the impact of climate change in the Arctic, is joined by Simms, author and campaigner with Global Witness, to discuss how close we are to crossing planetary environmental thresholds, how we got into this mess and what we need to do to get out of it.