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Lily Cole is the founder of Impossible.com
Mark Boyle started to rely entirely on gifts and bartering in 2008 - cooking on an outdoor stove, washing his clothes in soapwort, and using the Daily Mail as loo paper. He tells Lily Cole why he loved it.
Lily Cole talks to the former climate change minister Greg Barker about emissions targets, fracking and carbon taxes – then puts the same questions to Caroline Lucas of the Green party.