Our colleague Sergi Gómez has participated in the congress organized by the Spanish Society of Environmental Mutagenesis (SEMA), which this year has taken place in the Escuelas Pías de San Fernando (UNED Madrid). This event has allowed to bring together national and international researchers related to mutagenesis and environmental genomics, in each and every one of its disciplines, addressing different issues such as the bases of DNA damage and its repair, mutagenic processes, heritable effects, genetic and epigenetic alterations in the genome function, and their relevance in the appearance of diseases.