We are happy to invite you to the 11th Polish Evolutionary Conference. Polish Evolutionary Conference (PEC) in annual meeting of the broad-sense evolutionary biologists. This year, PEC conference is aimed at integrating micro- and macro worlds. Besides traditional topics such as evolutionary ecology, there will be sessions on evolutionary processes at the cellular scale, such as endosymbiosis, adaptation of microbial organisms to the changing environment, host-microbial interactions, and many more. PEC in relatively small conference with several sessions of contributed talks, and long breaks facilitating networking. We particularly encourage young researchers to come and present their work in a friendly atmosphere. The invited speakers include: *Krystyna Nadachowska-Brzyska, Jagiellonian University, Krakow, Poland Investigates the influence of extreme fluctuations in population size of outbreaking species on the dynamics of neutral and adaptive genetic variation using genome-wide datasets and novel analytical approaches. * Gytis Dudas, Vilnius University, Lithuania Studies RNA virus evolution at both short (genomic epidemiology) and long (metagenomic virus discovery) timescales. * Stevens, Lewis, Wellcome Sanger Institute, UK Interested in genome evolution in animals, with a particular interest in nematodes. * Michael Westbury, University of Copenhagen, Denmark Interested in the production and analysis of genomic data from modern, historical, and palaeontological specimens. Uses population and comparative genomic analyses to better understand their respective evolutionary histories and relationships. When:8-10 September 2025 Where: Warsaw, Poland Fee: only 450PLN (~100 euro) Abstract submission deadline: 15.06.2025 More info: https://pec2025.biol.uw.edu.pl/ On behalf the organising committee, dr hab. Agnieszka Kloch, prof. UW Zak³ad Ekologii, Wydzia³ Biologii Uniwersytet Warszawski ¯wirki i Wigury 101, 02-089 Warszawa Agnieszka Kloch (to subscribe/unsubscribe the EvolDir send mail to golding@mcmaster.ca)