Hans Verolme, lead author, has 20 years of global experience in the field of international environment and development. He has extensive experience navigating climate change politics, having worked as senior adviser at the British Embassy in Washington, DC, and as US and global director at WWF. He has thorough knowledge and extensive experience of development challenges and green economy. A Dutch national currently based in Berlin, Hans has lived and worked across the globe including in India, Kenya and the USA. A geographer by training, Mr Verolme has advised the British and Netherlands government, as well as the World Bank and many non-governmental organisations. In 2008, he created an international network of senior international climate change policy experts that collaborate on challenging strategic projects. From 2004 to 2008, Mr. Verolme acted as US and Global Director of WWF’s Climate Change and Energy Programme. Prior to joining WWF, he served for over four years as the Senior Energy and Environment Adviser to the British Ambassador in Washington, DC, where he worked to communicate the UK approach to climate change to the US policy-making community. Prior to that, Hans directed the Biodiversity Action Network engaging in international negotiations on forests and biodiversity. He currently serves on the Board of the US Climate Action Network and is a standing member of CAN International's Political Coordination Group. Mr Verolme is a regular visitor to Nigeria, where he has trained negotiators for international climate negotiations and has engaged various audiences and authors during the preparations of this study.