She has been making films for broadcasters in the UK, Germany and Spain since 1992. The E-Waste Tragedy is her latest work. Her previous documentary, The Light Bulb Conspiracy, about the history and impact of planned obsolescence was distributed to more than thirty territories and has won ten international festival awards. Previous productions include If Rubbish Could Speak, winner of several awards at environmental film festivals; Germany Inside Out, a series produced for BBC & YLE, which is still widely distributed; Rebuilding Berlin winner of the Journalism Prize of the Anglo-German Society. She is also the co-writer of a book about the history of planned obsolescence. Cosima is currently working on a film about the effects of speed and acceleration on society.