It has been nearly five years since the Darfur crisis began, and after nearly a half-million deaths and the displacement of more than 2.5 million Sudanese, an end to the conflict is still a long way off. University of South Florida's STAND, an anti-genocide student group, hopes to reinvigorate a local campaign with "Ending the Tragedy in Darfur," a lecture by the internationally-known humanitarian Mohamed Yahya. A refugee himself, Yahya was spokesman for the exiled Massaleit Community, the first organization to alert the world to human rights abuses in Western Sudan. After the Sudanese government targeted him, Yahya moved to the United States and founded the Damanga Coalition for Freedom and Democracy. "We need people to help us," Yahya said at a recent university stop, "because we don't have any people to help us." Thurs., Nov. 15, 7 p.m., University Lecture Hall, USF-Tampa, 4202 E. Fowler Ave., Tampa, free admission, 813-220-1957, ctr.usf.edu/stand.