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With less than two weeks to go before climate change negotiators meet once more to try and thrash out an international deal on cutting carbon emissions, One Planet travels to Bonn to meet the woman who will be at the very heart of the talks: Christiana Figueres, the new head of the UNFCCC.

After disappointment at Copenhagen, we ask Ms Figueres what realistically can be achieved in Cancun, Mexico, whether focusing on a global agreement is the right path to follow and how much sleep she's getting ahead of the talks.

Also in the show we explore the architectural promise of bamboo and meet the Colombian who's wooing the world with this carbon absorbing resource.

As ever, tune in, have a listen and let us know what you think. Email the team at oneplanet@bbc.com, or join us on our Facebook page.