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Ilus. Tab. Bib. Sum. (En) ; Secondary forests developing on agricultural land after it is abandoned, or as the fallow period in systems of subsistence agriculture, are an increasingly important component of the forest resources of the tropics. They fix and store carbon and may contribute to the alleviation of global warming, they are refuges for biodiversity in agricultural landscapes, and they are low-cost sources of a tremendous variety of forest products. The final years of the 20th century represent an opportune time to bring together researchers concerned with biological, ecological, social/organizational, financial/economic and political aspects of secondary forests and their management, to share their experiences and opinions concerning secondary tropical forests and to contribute to the development of a forward-looking, cross-disciplinary research agenda. The conference had the following objectives: 1) to summarize the state of knowledge of tropical secondary forests from the standpoint of the ecological, social and political sciences. 2) to report the most recent results of research on secondary forests from all relevant disciplines.

The article presents an overview of the first fifty years of the Brazilian Institute for International Relations. The Institute was founded as a civic organization with a cultural mandate, with the objective of carrying through, promoting, & stimulating studies on international problems, especially those that are of interest to Brazil. In reviewing the Institute's fifty-year record, the article presents data that demonstrates that the Institute's original objectives have been widely fulfilled. The Institute has always had a strong body of members, most of whom have contributed, to one degree or another, to the historical improvement in standards of research analysis & theoretical development, as well as the development of alternative policies in Brazil's foreign relations. The article concludes by detailing recent restructuring in the Institute, which is expected to make its performance even stronger. Adapted from the source document.

This article aims to analyze the options & opportunities available to environmental governance, starting from a definition of the global environmental crisis. The article provides a detailed analysis of the three clusters under which the international relations theory has investigated the collective management of this environmental crisis as well as the effectiveness of current institutional answers. Finally, the article reexamines matters pertaining to trade & environment & to environmental security. Tables, Figures. Adapted from the source document.