This document describes the development of theme-based projects within a European co-operative environmental education framework at the secondary school level. The participation of 15 students from 9 different European countries in one such project is described. Students are involved with the publication of articles based on firsthand observations of ozone layer research taking place in polar laboratories. The writings of the young reporters are then collated in a multilingual newspaper published every two months by the students. Several components of the program are addressed including local inquiries, assignments, and assessment. The underlying pedagogical aspects and the key factors that made the program worthwhile from an educational point of view are outlined. The extension of the ozone project within a permanent network encompassing secondary schools across Europe is discussed. An appendix provides the network's charter. (LZ)