The rhythms of the night: increase in online night activity and emotional resilience during the spring 2020 Covid-19 lockdownMaria Castaldo, Tommaso Venturini, Paolo Frasca and Floriana GargiuloEPJ Data Sci., 10 1 (2021) 7DOI: https://doi.org/10.1140/epjds/s13688-021-00262-1