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Climate change talks have been subdued since the anti-climatic (excuse the pun) ending of the Copenhagen talks in December 2009. But as the Kyoto agreement nears its expiry, fresh talks are needed to strike a new global deal. On this week's One Planet, Mike meets up with one of the UK's longest-serving and distinguished diplomats to ask just how difficult it us to thrash out these kind of agreements.

Sir Crispin Tickell outlines his idea for a range of smaller deals under a broad umbrella agreement as the way forward, but the conversation moves onto China - and his belief that the world's most populous nation is actually leading the way when it comes to green economic growth.

Mike then heads to Oxford, to speak with a number of delegates attending the Green Economics Institute's annual conference. He meets up with Uche Igwe, a research scholar currently at the John Hopkins University, Washington DC. Originally from Nigeria, Mr Igwe has a very different view of China and it's attitude to the environment.

Plus, we speak to Alain Bouquet, who now works at the Green Economics Institute, but previously was part of the University of East Anglia's Climatic Research Unit - the scientific department that was at the heart of the 'climategate' row when thousands of emails where copied from the unit's servers and released on the internet. Many climate sceptics believed the documents showed that global warming was not man made.

As ever, tune in and then get in touch to let us know your views. You can email the team at oneplanet@bbc.com, or join us on Facebook, the link is below.