Stephan Harrison is one of the UK’s leading climate scientists, specializing in climate change impacts, and is Professor of Climate and Environmental Change at Exeter University. Since 2011 he has been head of the Climate Change Expert Committee which advises the Office for Nuclear Regulation (part of the UK Health and Safety Executive) on climate change risks for all UK nuclear power sites. Stephan is Director and founder of Climate Change Risk Management (www.ccrm.co.uk) which since 2003 has provided detailed scientific advice to governments, commercial organisations and NGOs around the world.