Dear colleagues, We are pleased to announce a symposium on "urban evolutionary ecotoxicology" during the 3rd Joint Congress on Evolutionary Biology (Montreal, Canada, 26-30 July, https://www.evolutionmeetings.org/). Evolutionary ecotoxicology is a rapidly advancing interdisciplinary field. The aim of the symposium is to bring together researchers from diverse fields, such as urban ecology, ecotoxicology and evolutionary biology to promote a holistic approach to tackle the complex challenges posed by urban pollutants. We are looking forward to receiving your submissions to our symposium! Please do not hesitate to contact us if you have any questions: Josefa Bleu (josefa.bleu@iphc.cnrs.fr) Marion Chatelain (Marion.Chatelain@uibk.ac.at) Summary of the symposium: Urban areas cover around 3% of the world's land surface and are constantly expanding. One of their unique characteristics, compared with any other human-modified ecosystem, is that they concentrate multiple pollutants. This environment impacts organisms' fitness with consequences at the population, community and ecosystem levels, and ultimately affects the evolution of urban wildlife. Studying evolutionary consequences of exposure to pollutants is a prerequisite for understanding urban evolution. In particular, pollutants can affect mutations rate, sexual selection, parental care, epigenetic, or adaptation. In this symposium, we would like to focus on pollutants relevant for urban areas in order to link urban evolutionary biology and evolutionary ecotoxicology. We welcome submissions tackling the evolutionary consequences of pollutants exposure, the effects of pollutants on mechanisms that may have evolutionary implications, or the interaction between pollutants and evolutionary forces Josefa Bleu (to subscribe/unsubscribe the EvolDir send mail to golding@mcmaster.ca)