John Barry is a father, a recovering politician, Professor of Green Political Economy and Co-Director of the Centre for Sustainability, Equality and Climate Action at Queens University Belfast. He is also co-chair of the Belfast Climate Commission. What keeps him awake at night is the life opportunities and future wellbeing of his children in this age of the planetary crisis. His areas of academic research include post-growth and heterodox political economy; the politics, policy and political economy of climate breakdown and climate resilience; socio-technical analyses of low carbon just energy and sustainability transitions; and the overlap between conflict transformation and these sustainability transitions. His latest book is The Politics of Actually Existing Unsustainability: Human Flourishing in a Climate-Changed, Carbon-Constrained World (Oxford University Press).