My recent short keynote talk focusing on the systemic effects of a growth of ICT, data centres and AI on energy and material systems (systemic effects, rebounds, growth in e-Waste etc.) and the need to consider these impacts and limit overall growth – i.e. don’t adopt expensive techniques at scale that we can’t sustain or don’t deliver value to society or environment worthy of the impacts! (Industry and policy makers day at ICT4S 2026).