On Tuesday, 6 December 2022, Web2Learn organised a webinar on environmental citizen sensing and its contribution on social participation and deliberative democracy practices through art and new technologies. The webinar presented examples of citizen-sensing actions as well as of artistic expressions designed to foster active citizenship and address social injustices. We were extremely happy to host Anna Berti Suman (SensJus) and Sofia Greaves (Universidad de Vigo) who shared their expertise and experiences on art-based citizen sensing and environmental sustainability. The webinar was organised in the framework of the EU-funded GreenVETers project.