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With two months to go before the 17th UN climate conference in Durban, the French ambassador to the UK invites One Planet into his house to join a mini-gathering of diplomats, academics and negotiators debating the future of climate change action.

We speak to Lord Nicholas Stern, author of the influential Stern Review on climate change, who tells us why the costs of non-action have swelled significantly since the publication of his report five years ago this month.

One of the EU's lead negotiators explains why a successor to the Kyoto Protocol - which expires next year - is not going to come into force until 2020, and amid the clinking of champagne glasses at the lavish gathering, the former chair of the IPCC tells us why a heavy dose of realism is needed, and the world must acknowledge that the idea we're going to keep temperature rises to under two degrees is misguided.

As ever, tune in and then get in touch to let us know your views.

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