Theme issue ‘Tropical forests in the deep human past’ compiled and edited by Eleanor M.L. Scerri, Patrick Roberts, S. Yoshi Maezumi and Yadvinder Malhi
Theme issue ‘Species' ranges in the face of changing environments (Part II)’ compiled and edited by Marina Rafajlovic, Jake M. Alexander, Roger K. Butlin and Kerstin Johannesson
Theme issue ‘Species' ranges in the face of changing environments (Part I)’ compiled and edited by Marina Rafajlovic, Jake M. Alexander, Roger K. Butlin and Kerstin Johannesson
Theme issue ‘The centennial of the pecking order: current state and future prospects for the study of dominance hierarchies’ compiled and edited by Eli D. Strauss, James P. Curley, Daizaburo Shizuka and Elizabeth A. Hobson
Discussion meeting issue ‘The emergence of collective knowledge and cumulative culture in animals, humans and machines’ organized and edited by Andrew Whiten, Dora Biro, Ellen C. Garland and Simon Kirby
Theme issue ‘Voice modulation: from origin and mechanism to social impact (Part II)’ compiled and edited by Juan David Leongómez, Katarzyna Pisanski, David Reby, Disa Sauter, Nadine Lavan, Marcus Perlman and Jaroslava Varella Valentova