The Editor of Artificial Life would like to express his gratitude to the people listed below, who anonymously reviewed papers for the journal during the preparation of Volume 21. Their generosity, judicious judgment, and prompt response substantially helped us publish a journal that both is timely and has exacting scientific standards. The responsibility for sustaining the quality and relevance of the Journal rests largely in the hands of our reviewers. We at the Journal, and all of our readers, are deeply indebted to them. It is a genuine pleasure to thank them collectively for their dedicated service. (If anyone has been inadvertently omitted from this list, we sincerely apologize and ask them to let us know so that we can include their name in a future list of referees.)
Andy Adamatsky
Martyn Amos
Tim Andersen
Claes Andersson
Takaya Arita
Ricardo Azevedo
Wolfgang Banzhaf
Peter Bentley
Michal Bidlo
Joachim Boldt
Josh...