Hi all, We invite you to our next session of the X4D Talks <http://x4d.org/> on *March 23rd 0800 PDT/1500 GMT/2030 IST on Sustainability and Development*. Our speakers include: *Barath Raghavan,* University of Southern California, USA *Computing within Limits * Global society has run up against the limits of the global ecosystem. This has happened during an era in which computing has become central to society and to the management of societal challenges. What are the ecological and social limits that we are likely to face in the future, and what is the role of computing in responding to them? *Bonnie Nardi,* University of California, Irvine, USA *Post-Growth * To fix our broken global economy which has become dependent on ruinous growth, scholars and activists propose a post-growth economy of socially sustainable and equitable reduction of resource use coupled with changes in distributive practice. The ideas are as much about reimagining how we relate to each other and the world as they are about production and consumption. Post-growth philosophy suggests that we can do better than the the alienations of neoliberal atomism and the hyper-competitive struggle in which someone or something is always losing. Unexamined notions of "freedom" enshrined in current economic ideology implicitly demote solidarity, caring, and mutual respect for human and non-human. What do the post-growthers have to say? *Anjali Mohan*, Integrated Design, National Law School of India University, Bangalore, & TLI Bangalore, India *Decentralised Socio-Technical Imaginaries as Pathways to Sustainable Urban Development * Amidst arguments for steady state, degrowth, post-development, and post-growth economies, this talk focuses on alternative visions of development informed by bottom-up socio-technical imaginaries premised on the ‘stubborn ground realities’. The talk draws on interventions towards enhancing water resilience in urban poor settlements in the city of Ranchi. *Jay Chen*, International Computer Science Institute, USA *Sustainability or Development? * Sustainability and development are both urgent problems. Given the finite availability of resources, the two goals seem fundamentally at odds. How do we do both? Are there synergies or alternative conceptualizations that can help? *When:* March 23rd 0800 PDT/1500 GMT/2030 IST** *Where: *https://ucl.zoom.us/j/95227615667 Warmly, Neha & Akhil