Contributor(s): Professor Peter John, Professor Theresa M Marteau, Sanchayan Banerjee, Professor Gerry Stoker | Recent advancements made by the UK's Committee on Climate Change (UKCCC) towards achieving the Paris Agreement goals by announcing their net zero emissions target shows the UK's commitment to tackling one of the most important challenges of the 21st century: the climate change dilemma. Can we sustain this behaviour change through old-school nudges only? Or is there a need for greater reflection on the part of individuals? Peter John (@peterjohn10) is Professor of Public Policy at King's College, London and author of Nudge, Nudge, Think, Think: Experimenting with Ways to Change Civic Behaviour. Professor Theresa M Marteau (@MarteauTM) is Director of the Behaviour and Health Research Unit, University of Cambridge. Sanchayan Banerjee (@SanchayanBanerj) is a PhD Candidate in Environmental Economics at LSE. He holds an MSc in Environmental Economics and Climate Change (Distinction) from LSE (2017-18) and a Bachelor of Arts in Economics (Silver Medalist) from Jadavpur University, India (2014-17). Professor Gerry Stoker (@ProfStoker) is Professor of Governance at the University of Southampton. Dr Ganga Shreedhar (@geeshree)Assistant Professor of Behavioural Science in the Department of Psychological and Behavioural Science, and Affiliate of the Department of Geography and Environment, LSE. The Department of Geography and Environment (@LSEGeography) is a centre of international academic excellence in economic, urban and development geography, environmental social science and climate change. Twitter hashtags for this event: #LSEFestival #ShapetheWorld This event is part of the LSE Festival: Shape the World running from Monday 2 to Saturday 7 March 2020, with a series of events exploring how social science can make the world a better place.