George Clooney in Sudan

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The actor shows a villager images on a digital camera. In part because of Clooney's efforts, activities in Sudan after Dec. 30 will be monitored by satellite. The Satellite Sentinel Project is a joint experiment by the U.N.'s Operational Satellite Applications Programme, Harvard University, the Enough Project and Clooney's supporters in Hollywood. The project will use private satellites to monitor troop movements in the region. "We are the anti­-genocide paparazzi," Clooney tells TIME. "We want them to enjoy the level of celebrity attention that I usually get. If you know your actions are going to be covered, you tend to behave much differently than when you operate in a vacuum."

• Clooney's "Antigenocide Paparazzi": Watching Sudan from Above