{mosimage}The 37th COSPAR Scientific Assembly will be held July 13-20 in Montreal (Canada). {cb_profile=grandi}Paola Grandi{/cb_profile} (IASF-BO) and Silvia Pellegrini (Università di Bologna) are the Main Scientific Organizer and the Deputy Organizer for one of COSPAR events, E17 – Accretion and Ejection in AGN. The meeting will be focussed on recent observational and theoretical developments in Active Galactic Nuclei related to high energetic phenomena associated to ejection of accreting material.