edited by Luc Steels and Rodney Brooks. edited by Valerie Steele and Colleen Hill. edited by SusanL. Burns and Barbara J. Brooks. edited by Birgit Beumers and Nancy Condee. edited by Chris Stephens and Andrew Wilson edited by Jane Bingham and Felicity Brooks edited by Arild Waeraas and Moshe Maor. edited by Alan Isaacs and Jennifer Monk edited by Valerie Steele and Colleen Hill edited by Thomas Howells and Leanne Hayman.