—1. Look for information on the internet about the Johannesburg Summit on sustainable Development. Which agreements were reached? In what aspects was it a failure?

—2. If something as simple as the requests of the demonstrators cannot be guarantee, does it make any sense to discuss for hours about environmental problem?

—3. Start a discussion either about the necessity or the uselessness of international conferences where important issues that are of some concern to us all are discussed.

—4. Summarize the main ideas arisen in the discussion.