CTTC hosts the 3rd GREENEDGE Training School (Castelldefels, Spain) from 21 to 25 November 2022. Greenedge is a MSCA ITN project which aims to tame the environmental impact of mobile networks funded from the European Union’s H2020 program (grant no. 953775). The school is a unique opportunity for ESRs to interact with each other and with supervisors, create synergies and evaluate their progress. The school will also feature keynote lectures from distinguished researchers covering reinforcement learning, transformers, edge and neuromorphic computing.