Julien Tailleur is a statistical physicist working at CNRS and Université de Paris. He has worked on a broad range of problems in non-equilibrium statistical mechanics and its applications to biophysics and active matter. Gerhard Gompper is Professor of Physics at University of Cologne and Institute Director at Forschungszentrum Jülich. He was educated at Ludwig-Maximilians-University in Munich, where he also earned his PhD. Cristina Marchetti is Professor of Physics at the University of California Santa Barbara. She was educated in Italy at the University of Pavia, earned her Ph.D. in the U.S. at the University of Florida, and joined the faculty at UC Santa Barbara in 2018. Julia Yeomans is Professor of Physics and Head of the Rudolf Peierls Centre for Theoretical Physics at the University of Oxford and Pauline Chan Fellow at St Hilda's College Oxford. Christophe Salomon is Directeur de Recherches au CNRS, Laboratoire Kastler Brossel, ENS Paris.