"The Blue Danube, Johann Strauss"
Toxic sludge from an alumina plant in Ajka, west Hungary, has reached the Danube, after causing the deaths of four people and the destruction of several villages.
A conversation with investigative reporters Stefano Valentino and Giorgio Michalopoulos, who have dissected the dark underbelly of green finance for Voxeurop and won several awards for their work.
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