LONDON: Hollywood star George Clooney has paid tribute to fellow activist Mia Farrow for fasting to bring attention to the ongoing problems in Sudan. The two stars have become leading celebrity campaigners about the genocide in Sudan. While Clooney has been filming interviews with terrified refugees and talking about his experiences among politicians in Washington, the actress has been living among those caught up in the conflict and now she’s on hunger strike for them, reported femalefirst.com. Clooney applauded his ‘dedicated’ friend’s efforts as she embarks on three weeks without food. “I ran into Mia in Chad this January. She’d been living in the camps and villages on the border of Darfur for weeks. She is as dedicated to this cause as any activist I know,” said the actor. Last week Farrow, 64, announced she would start fasting as “a personal expression of outrage at a world that is somehow able to stand by and watch innocent men, women and children needlessly die of starvation, thirst and disease”.