Once upon a time there was a land where people needed drinking water, where cities needed electricity, and where crops needed irrigation. How could such a land satisfy its needs? Over 45,000 times in the last century a land such as this one decided to build some dams. But activists and many affected people now believe these were very bad decisions, and some have even died trying to prove it. In this Earth Report we examine the findings of the World Commission on Dams on the question: To Dam or not to Dam? The Commission spent two and a half years of exhaustive research and intense dialogue searching for the answer. Since 1984 tve has been documenting the dam debate. In this film we draw on our archive as well as travel to three continents to explore the commission’s findings.