[3 summit conferences on Earth insufficient to save the Planet, Controversies and achievements]

Abstract

This review summarizes the present concerns on the deteriorated biological systems. This concern has generated many publications since it is a very serious subject. The human being has produced a deep impact on the environment that could even could induce climatic changes. Because these circumstances have increased the socioeconomical differences between developed and third world countries, the United Nations Organization had organized three summit conferences (Oslo, 1972; Rio do Janeiro, 1992; Johannesburgh, 2002) in order to propose solutions. This review discusses the conclusions held at these conferences.