Contributions by: Tobias Uller, Kevin N. Laland, Massimo Pigliucci, Arlin Stoltzfus, Armin P. Moczek, David I. Dayan, Melissa A. Graham, John A. Baker, Susan A. Foster, Sonia Sultan, John Odling-Smee, Marcus W. Feldman, Renée A. Duckworth, Hekki Helanterä, Richard A. Watson, Christoph Thies, Denis Walsh, Jun Otsuka, Arnaud Pocheville, Lynn Chiu, Karola Stotz