With cities at the forefront of climate neutrality solutions, their experiences hold valuable lessons for national authorities and EU decision-makers in the framework of the European Green Deal. A first Policy Lab, facilitated by  NetZeroCities, gathered representatives from 21 Mission Cities to explore the intricacies of circular economy practices, with a particular focus on circular construction and reducing plastic waste. The insights gathered from Mission Cities Oslo, Helsinki, and Stockholm, alongside contributions from eighteen additional Mission Cities, have culminated in the production of a first Mission Cities’ Policy Brief. This document presents a comprehensive set of policy recommendations aimed at EU decision-makers and [...]