Agenda 21 recommends:< (a) that governments at the appropriate level, with the support of the relevant international and regional organizations, should undertake nationwide major anti-desertification awareness/training campaigns within countries affected through existing national mass media facilities, educational networks and newly created or strengthened extension services. This should ensure people's access to knowledge of desertification and drought and to national plans of action to combat desertification;< (b) through education and awareness-building, promoting the involvement of the local population, particularly women and youth, in collection and utilization of environmental information;< (c) reviewing, developing and disseminating gender-disaggregated information, skills and know-how at all levels on ways of organizing and promoting popular participation.