Meio ambiente e relações internacionais: perspectivas teóricas, respostas institucionais e novas dimensões de debate.

This article aims to analyze the options and 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 and environment and to environmental security. [ABSTRACT FROM AUTHOR]