Tim van Hattum has 25 years experience as consultant, policy advisor, project manager and researcher in the field of integrated water management and climate change. He has lead several (inter)national projects and public private partnerships focussing on innovative and nature based climate solutions. Tim has a large (inter)national network in the business, government and research sector. He finished his MSc in Environmental Science in 1998 and started his career as consultant for Witteveen+Bos consultancy. In 2003 he became policy advisor for a provincial authority and later a regional water authority. Since 2010 he is working at Wageningen Environmental Research as senior project manager and researcher. Currently he is leading the Green Climate Solutions Program at Wageningen Environmental Research that aims to contribute to climate action by providing tailor made climate impact information and evidence base for nature based solutions for mitigation and adaptation.