This episode of The Green Interview features Daniel Sallaberry, the lawyer behind the "Mendoza Case," a lawsuit filed in 2004 by the residents of an impoverished neighbourhood bordering the Riachuelo River in Buenos Aires, Argentina. For more than 200 years the river has been horribly polluted, carrying the run-off from tanneries, oil refineries, chemical industries, shanty-towns and farmlands. The lawsuit was brought against the city, the province, the national government, fourteen upstream municipalities and 44 private companies, alleging that these organizations had damaged their health and infringed their right to a healthy environment - and on July 8, 2008, after four years of hearings the Supreme Court handed down a landmark decision in which it ruled that government and industry had indeed infringed the residents' right to a healthy environment, and were obliged to repair the damage. Sallaberry discusses the lawsuit, the challenges that remain and how it's putting Argentina's laws to the test.