in a similar vein, Hewlett and Fancher provide a comprehensive critical analysis of the highly internationalized work conducted among hunter-gatherers in central Africa. This holarship is also rather diverse, has likewise been broadly dominated by ecological and sci entific approaches, but also includes a concern with understanding the deep cultural affinity that these groups have with the forest More recently, there have been increases in develop ment and conservation work, and growing interest in exploring culture-contact dynamics. The latter has included research into the "carbohydrate question, that is, the extent to which hunter-gatherers can actually survive in tropical forests without supplementary foodstuff acquired through exchange networks that link them with farmers. culture-contact is a fundamental prerequisite to foraging adaptation to tropical forests, how old can this way of life actually be? Hewlett and Fancher conclude their review with an outline of direction future work. Basic ethnographic fieldwork is still required among some groups, and much more humanities orientated research could be done to better understand how these for ager cultures think and feel about sharing, egalitarianism, gender relations, family, religion and the spiritual world, all of which would offset the predominance of ecological research themes noted above.